Closings related to the prevention of the COVID-19 can be found on our Closings page. The team that found it named it Peregocetus pacificus. The whales we know today look nothing like they did millions of years ago. The whales we know today look nothing like they did millions of years ago. It is known primarily from a single skeleton which is about 80% complete, and is among the most completely known Eocene cetaceans, … Ancient four-legged whale from Peru walked on land, swam in sea. A skeleton discovered off the coast of Peru is an important piece in understanding the puzzle of early whales. There are many intermediary stages of this "spectacular evolutionary history" that have been found over the years, "but we still miss elements, so we should keep searching in other parts of the world, especially in the Southern Hemisphere, for skeletons of these strange four-legged whales, to make the whole scenario better understood," Lambert said. Empire of Elephants Published. Today, a giant otter-type creature would have to swim a long way to migrate, but at that time in the Earth's history, the distance between Africa and South America was two times shorter and the currents were strong. April 4, 2019 8:52 AM. Early whale ancestors were not fully aerodynamic like whales are today. (CNN)The whales we know today look nothing like they did millions of years ago. Crucially, though, the anatomy of this mammal's inner ears closely matches that of modern whales, the main "diagnostic" feature that places Pakicetus at the root … 2605 Yeager RoadWest Lafayette, IN 47906 USAMain Phone: 765-463-1800, All content © copyright WLFI. "Based on the available evidence, and on the fact that the postcranial skeleton is poorly known in species from both Africa and North America, several questions remained debated: When did quadrupedal whales reach the New World? Ancient Whales Walked on Four Legs and Moved Like Giant Otters. Rather than being one of the largest creatures on Earth, as they are now, they came from creatures that were the size of an average dog. The 2011 find by Mario Urbina and his international team contained several surprises. Meet the ancient ancestors of four iconic creatures: crocodiles, birds, whales and elephants. Rather than being one of the largest creatures on Earth, as they are now, they came from creatures that were the size of an average dog. Today, a giant otter-type creature would have to swim a long way to migrate, but at that time in the Earth's history, the distance between Africa and South America was two times shorter and the currents were strong. Which path did they take? "Based on the available evidence, and on the fact that the postcranial skeleton is poorly known in species from both Africa and North America, several questions remained debated: When did quadrupedal whales reach the New World? Four legs, webbed feet and hooves on its toes: this new fossil discovery from Peru doesn't sound like a typical whale. by Site Contributor. National and World News. Lambert and his team, who published their findings in the journal Current Biology on April 4, 2019, believe that similar to otters, the P . The findings are reported in the journal Current Biology on April 4. When whales walked on four legs Ancient whales walked on four legs and moved like giant otters -- seriously; Turnovers Plague Chiefs in Loss to Giants; Wathena takes "One Giant Leap" into fall ; Dozens of beachgoers helped save a pod of beached whales; Police: Man taken to hospital after being shot in leg; Man sentenced to 10 years for shooting wife in leg By Josh Davis. Fossils of ancient whales found in the middle-East include hind limbs. This 2011 discovery confirmed that the animals were probably good swimmers and good at getting around on land. This is the oldest known whale found in this part of the world, and it is the most complete skeleton anyone has ever found outside India and Pakistan. A fossilized whale with four legs, webbed feet and hoofed toes is revealing new details about the evolution and geographical spread of whales … From South America, they probably migrated to North America, as well. Instead, cetaceans, the group including today's whales and dolphins, evolved 50 million years ago from small four-legged animals with hooves. Ancient Whales Walked on Four Legs and Moved Like Giant Otters. The whales we know today look nothing like they did millions of years ago. Ancient four-legged whale with webbed feet and hooves uncovered in Peru. Which path did they take? It contains one species, A. natans.The genus name comes from Latin ambulare "to walk" and cetus "whale", and the species name natans "swimming". Instead, cetaceans, the group including today’s whales and dolphins, evolved 50 million years ago from small four-legged animals with hooves. Lambert and his team, who published their findings in the journal Current Biology on April 4, 2019, believe that similar to otters, the P . On the coast of Peru, researchers discovered the well-preserved bones of an ancient four-legged whale. The team that found it named it Peregocetus pacificus. Seriously. Their land-dwelling ancestors lived about 50 million years ago. Instead, cetaceans, the group including today's whales and dolphins, evolved 50 million years ago from small four-legged animals with hooves. Ancient whales walked on four legs and moved like giant otters. This particular creature would have been up to 4 meters long, or 11 feet, tail included. From South America, they probably migrated to North America, as well. Ancient four-legged whale from Peru walked on land, swam in sea. Meet Pakicetus , a goat-sized, four-legged creature that scientists recognise as one of the first cetaceans (the group of marine animals that includes dolphins and whales). The ancient whales also had long toes that were most likely webbed, meaning they moved a lot like today's otters. ... Whale evolutionary origins were poorly understood until the 1990s when fossils of the earliest whales were found. Oddball ancient whale had four legs, hooves on its toes. Scientists will continue to dig in this area in Peru. PBS Eons 1,922,987 ... ancient forgotten animal vines to … The fossil of a 43-million-year-old whale with four legs, webbed feet and hooves has been discovered in Peru. https://www.cnn.com/2019/04/04/health/four-legged-whale-otter-scn 3 Min Read. Although whales are expert swimmers and perfectly adapted to life underwater, these marine mammals once walked on four legs. by Site Contributor. This illustration shows an artistic reconstruction of two individuals of Peregocetus, one standing along the rocky shore of nowadays Peru and the other preying upon sparid fish. 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An ancient four-legged whale with hooves has been discovered, providing new insights into how the ancestors of the Earth’s largest mammals made the transition from land to sea. The whales we know today look nothing like they did millions of years ago. "A skull would be great, as well as the tip of the tail," Lambert said. "We were also surprised with the geological age of the find (42.6 million years ago) and with the preservation state [of] so many bones from most parts of the skeleton, even including a patella (kneecap), some small ankle bones, and the last phalanges with marks of tiny hooves.". The ancient whale, which resembled the modern-day otter, had four legs, elongated toes, sharp teeth, and maybe even fur. Ambulocetus is a genus of early amphibious cetacean from the Early Eocene Kuldana Formation in Pakistan. These ancient animals walked on all four legs like a d\൯g until they evolved into their current aquatic form. Now, researchers reporting the discovery of an ancient whale with four legs - found in 42.6-million-year-old marine sediments along the coast of Peru - have new insight into whales' evolution and their dispersal to other parts of the world. Approximately 43 million years ago, the whale, which looked like a mixture of a rhino and a sea otter, had a narrow head, four legs with webbed feet and hoofed toes, and a long, muscular tail. But scientists believe that the remains of this curious, otter-like creature may have been an early cetacean that had not yet fully transitioned to live in the water. Sign up here to get The Results Are In with Dr. Sanjay Gupta every Tuesday from the CNN Health team. by: CNN Wire. One early croc relative was built like a greyhound, ancient whales really did walk on four legs and the earliest ancestor of the elephant was the size of a rabbit. ; The creature, named Peregocetus pacificus, had sharp teeth for hunting fish and could both walk on land and swim in the sea. Unfortunately, scientists did not find the last part of the tail section of this creature, but the first vertebra connecting this section of the bones was similar to what modern-day beavers and otters have. The ancient whales also had long toes that were most likely webbed, meaning they moved a lot like today’s otters. Instead, cetaceans, the group including today's whales and dolphins, evolved 50 million years ago from small four-legged animals with hooves. Scientists say ancient whales walked on four legs and moved like giant otters National & World. by: CNN Wire. Four legs, webbed feet and hooves on its toes: this new fossil discovery from Peru doesn't sound like a typical whale. They hope to find bones that may be even older so that they can fill in more pieces of this puzzle about how the whale evolved over time. It is known primarily from a single skeleton which is about 80% complete, and is among the most completely known Eocene cetaceans, … Unfortunately, scientists did not find the last part of the tail section of this creature, but the first vertebra connecting this section of the bones was similar to what modern-day beavers and otters have. Scientists will continue to dig in this area in Peru. They probably didn't become fully marine animals until about 12 million years after this creature roamed the Earth, scientists think. Paleontologists have discovered an ancient whale that had four legs, webbed feet, and small hooves on the tips of its fingers and toes. Ancient whales walked on four legs and moved like giant otters — seriously Trending. "As this is the first four-legged whale skeleton for South America and the whole Pacific Ocean, the discovery in itself was a major surprise," study co-author Olivier Lambert wrote in an email. The whales we know today look nothing like they did millions of years ago. Cetaceans, the group including whales and dolphins, originated in south Asia more than 50 million years ago from a small, four-legged, hoofed ancestor.Now, researchers reporting the discovery of an ancient whale with four legs - found in 42.6-million-year-old marine sediments along the coast of Peru - have new insight into whales' evolution and their dispersal to other parts of the world. Ancient whales walked on four legs and moved like giant otters. The 2011 find by Mario Urbina and his international team contained several surprises. "We were also surprised with the geological age of the find (42.6 million years ago) and with the preservation state [of] so many bones from most parts of the skeleton, even including a patella (kneecap), some small ankle bones, and the last phalanges with marks of tiny hooves.". The whales we know today look nothing like they did millions of years ago. Posted: Apr 4, 2019 / 09:07 PM PDT / Updated: Apr 4, 2019 / 09:07 PM PDT. Ambulocetus is a genus of early amphibious cetacean from the Early Eocene Kuldana Formation in Pakistan. Posted: Apr 5, 2019 / 08:19 PM EDT / Updated: Apr 5, 2019 / 08:19 PM EDT. The whales we know today look nothing like they did millions of years ago. When ancient whales finally parted company with the last remnants of their legs about 35 million years ago, a relatively sudden genetic event may have crowned an eons-long shrinking process. Instead, cetaceans, the group including today’s whales and dolphins, evolved 50 million years ago from small four-legged animals with hooves. First published 4 April 2019. By Will Dunham. The Anatomy of the Ancient Whale One early croc relative was built like a greyhound, ancient whales really did walk on four legs and the earliest ancestor of the elephant was the size of a rabbit. Quadrupedalism is a form of terrestrial locomotion in animals using four limbs or legs.An animal or machine that usually moves in a quadrupedal manner is known as a quadruped, meaning "four feet" (from the Latin quattuor for "four" and pes for "foot"). Ancient whales walked on four legs and moved like giant otters. News. "Four-legged whales, the ancestors of nowadays whales and dolphins, have been previously found in three main regions: the geologically oldest come from India/Pakistan, somewhat younger taxa [the plural of taxonomy] were described from North and West Africa, and even younger ones from the east side of North America," Lambert said. Scientists have discovered fossils that show 43 million-year-old four-legged whales in Peru walked on land. ... Past research showed this ancient whale had large hips, which suggested it also had large hind legs… Whales today do not have hind limbs; however, they have vestigial \⠀氀攀昀琀對ⴀ漀瘀攀爀尩 pelvis bones that are part of their skeleton. "As this is the first four-legged whale skeleton for South America and the whole Pacific Ocean, the discovery in itself was a major surprise," study co-author Olivier Lambert wrote in an email. The whales we know today look nothing like they did millions of years ago. The ancient whales also had long toes that were most likely webbed, meaning they moved a lot like today's otters. "Four-legged whales, the ancestors of nowadays whales and dolphins, have been previously found in three main regions: the geologically oldest come from India/Pakistan, somewhat younger taxa [the plural of taxonomy] were described from North and West Africa, and even younger ones from the east side of North America," Lambert said. Ancient whales walked on four legs and moved like giant otters -- seriously; Turnovers Plague Chiefs in Loss to Giants; Wathena takes "One Giant Leap" into fall ; Dozens of beachgoers helped save a pod of beached whales; Police: Man taken to hospital after being shot in leg; Man sentenced to 10 years for shooting wife in leg by: CNN Wires. In most ways, Pakicetus (Greek for "Pakistan whale") was indistinguishable from other small mammals of the early Eocene epoch: about 50 pounds or so, with long, dog-like legs, a long tail, and a narrow snout. CLICK HERE. Copyright © 2020 Allen Media Broadcasting, LLC All Rights Reserved. The First Whales . Evoking awe and wonder, WHEN WHALES WALKED contains startling revelations about the ancient ancestors of animals still alive today. They hope to find bones that may be even older so that they can fill in more pieces of this puzzle about how the whale evolved over time. The ancestors of whales once strode on land on four legs, just as other mammals do. It means "the traveling whale that reached the Pacific.". Early whale ancestors were not fully aerodynamic like whales are today. Prehistoric whales were dog-sized creatures with four legs ... You get to do things like draw the world’s first image of a four-legged whale. That's probably how they crossed the Atlantic Ocean, researchers said. Ancient whales walked on four legs and moved like giant otters. Scientists had known that the whales' body shape had changed over the years, making the creatures better adapted to life in the water; however, they didn't know how the creature had moved from South Asia to South America. Posted: Apr 4, 2019 / 12:10 PM PDT / Updated: Apr 4, 2019 / 12:09 PM PDT. Fossil of ancient four-legged whale found in Peru. This figure shows the bones of Peregocetus, including the mandible with teeth, scapula, vertebrae, sternum elements, pelvis, and fore- and hind limbs. "A skull would be great, as well as the tip of the tail," Lambert said. This particular creature would have been up to 4 meters long, or 11 feet, tail included. Paleontologists have discovered skeletons of these early creatures in India and Pakistan, but this new find, as discussed in Thursday's edition of the journal Current Biology, was found in the Pisco Basin on the southern coast of Peru. That's probably how they crossed the Atlantic Ocean, researchers said. This 2011 discovery confirmed that the animals were probably good swimmers and good at getting around on land. On the coast of Peru, researchers discovered the well-preserved bones of an ancient four-legged whale. When Whales Walked: ... we meet an extraordinary cast of ancient characters, from four-tusked elephants to crocs that would dwarf any reptile alive today to a whale ancestor that walked on four legs. One early croc relative was built like a greyhound, ancient whales really did walk on four legs and the earliest ancestor of the elephant was the size of a … The whales we know today look nothing like they did millions of years ago. by: CNN Wire. Scientists had known that the whales' body shape had changed over the years, making the creatures better adapted to life in the water; however, they didn't know how the creature had moved from South Asia to South America. When ancient whales finally parted company with the last remnants of their legs about 35 million years ago, a relatively sudden genetic event may have crowned an … The 2011 find by Mario Urbina and his international team contained several surprises. Rather than being one of the largest creatures on Earth, as they are now, they came from creatures that were the size of an average dog. The presence of a tail fluke remains hypothetical. The majority of quadrupeds are vertebrate animals, including mammals such as cattle, dogs and cats, and reptiles such as lizards. And what [were their] locomotion abilities during that long travel?". Approximately 43 million years ago, the whale, which looked like a mixture of a rhino and a sea otter, had a narrow head, four legs with webbed feet and hoofed toes, and a long, muscular tail. (CNN)The whales we know today look nothing like they did millions of years ago. Lambert works at the Royal Belgian Institute of Natural Sciences. April 4, 2019 8:52 AM. And what [were their] locomotion abilities during that long travel?". Scientists have found a 'fossil graveyard' linked to the asteroid that killed off the dinosaurs, Meet 'Scotty,' the largest Tyrannosaurus rex ever discovered. Posted: Apr 4, 2019 / 02:35 PM CDT / Updated: Apr 4, 2019 / 02:35 PM CDT. (CNN)The whales we know today look nothing like they did millions of years ago. It means "the traveling whale that reached the Pacific.". Join top scientists on a global adventure as they follow clues from the … A fossilized whale with four legs, webbed feet and hoofed toes is revealing new details about the evolution and geographical spread of whales across the globe. As the spread of COVID-19, or as it's more commonly known as the coronavirus continues, this page will serve as your one-stop for the resources you need to stay informed and to keep you and your family safe. Paleontologists have discovered skeletons of these early creatures in India and Pakistan, but this new find, as discussed in. The ancient whales also had long toes that were most likely webbed, meaning they moved a lot like today's otters. ; A new study about this whale ancestor may force scientists to rethink how these creatures migrated 40 to 50 million years ago. Posted: April 4, 2019 8:52 AM. Paleontologists have discovered an ancient whale that had four legs, webbed feet, and small hooves on the tips of its fingers and toes. Seriously. Posted: April 4, 2019 8:52 AM. It contains one species, A. natans.The genus name comes from Latin ambulare "to walk" and cetus "whale", and the species name natans "swimming". This is the oldest known whale found in this part of the world, and it is the most complete skeleton anyone has ever found outside India and Pakistan. When Whales Walked - Duration: 6:17. The ancient whale, which resembled the modern-day otter, had four legs, elongated toes, sharp teeth, and maybe even fur. Updated 1511 GMT (2311 HKT) April 4, 2019. They probably didn't become fully marine animals until about 12 million years after this creature roamed the Earth, scientists think. There are many intermediary stages of this "spectacular evolutionary history" that have been found over the years, "but we still miss elements, so we should keep searching in other parts of the world, especially in the Southern Hemisphere, for skeletons of these strange four-legged whales, to make the whole scenario better understood," Lambert said. Lambert works at the Royal Belgian Institute of Natural Sciences. Sign up here to get the Results are in with Dr. Sanjay Gupta every Tuesday the... What [ were their ] locomotion abilities during that long travel? `` nothing like they millions. Roamed the Earth, scientists think, which resembled the modern-day otter, had four and! Means `` the traveling whale that reached the Pacific. `` teeth, and reptiles such cattle. Pm EDT RoadWest Lafayette, in 47906 USAMain Phone: 765-463-1800, All content © copyright WLFI been to. Early whale ancestors were not fully aerodynamic like whales are today they have vestigial \⠀氀攀昀琀對ⴀ漀瘀攀爀尩 bones... Mario Urbina and his international team contained several surprises CNN ) the whales we know today look nothing they... Four-Legged whale with four legs and moved like giant otters did millions of years ago small. Were poorly understood until the 1990s when fossils of the tail, '' said! Fossils that show 43 million-year-old four-legged whales in Peru marine animals until about 12 million ago... Like today 's whales and dolphins, evolved 50 million years ago from small animals. Otters — seriously Trending whale had four legs, webbed feet and hooves uncovered in Peru expert swimmers and at... Eocene Kuldana Formation in Pakistan their land-dwelling ancestors lived about 50 million years after this roamed... Of whales once strode on land animals, including mammals such as cattle, dogs and cats and!. `` continue to dig in this area in Peru, tail included fossils that 43! They crossed the Atlantic Ocean, researchers said four legs and moved like giant otters National & World important in. Earliest whales were found creature would have been up to 4 meters,! At the Royal Belgian Institute of Natural Sciences they probably migrated to North America, as well 12:09 PM /! Fossil discovery from Peru does n't sound like a typical whale skeletons of these early creatures in India Pakistan... Are expert swimmers and good at getting around on land prevention of the tail, '' lambert.. The COVID-19 can be found on our closings page maybe even fur 1990s when fossils of ancient whales walked four... And cats, and reptiles such as lizards creatures migrated 40 to 50 million years after this creature roamed Earth! Or 11 feet, tail included include hind limbs ; however, they probably did n't become fully marine until... 2011 find by Mario Urbina and his international team contained several surprises probably did n't become marine... May force scientists to rethink how these creatures migrated 40 to 50 million years after this creature the! Long travel? `` were not fully aerodynamic like whales are today like 's... Years ago the ancestors of animals still alive today off the coast of Peru, researchers said aerodynamic whales... Like a d\൯g until they evolved into their Current aquatic form the 2011 find by Mario and... A genus of early amphibious cetacean from the early Eocene Kuldana Formation Pakistan! Journal Current Biology on April 4 Lafayette, in 47906 USAMain Phone: 765-463-1800, All content copyright. To the prevention of the tail, '' lambert said their skeleton ) the we... 1990S when fossils of the tail, '' lambert said wonder, when whales walked on land,., 2019 / 12:09 PM PDT / Updated: Apr 5, 2019 / 08:19 PM EDT researchers said on... Not fully aerodynamic like whales are expert swimmers and perfectly adapted to life underwater these. They evolved into their Current aquatic form four-legged animals with hooves life,... Posted: Apr 4, 2019 / 08:19 PM EDT as cattle, dogs and cats and. 'S probably how they crossed the Atlantic Ocean, researchers said the CNN Health.! About 12 million years ago they did millions of years ago from small four-legged animals with.. The group including today 's otters whale ancestors were not fully aerodynamic like are. Edt / Updated: Apr 4, 2019 / 09:07 PM PDT / Updated: Apr 4 2019. Early creatures in India and Pakistan, but this new fossil discovery from Peru does n't like!, All content © copyright WLFI ancient whale, which resembled the modern-day otter, four. Off the coast of Peru, researchers said 's whales and dolphins, evolved 50 million years.. Migrated 40 to 50 million years ago 11 feet, tail included new,! Area in Peru RoadWest Lafayette, in 47906 USAMain Phone: 765-463-1800, All ©... Not have hind limbs ; however, they probably did n't become fully marine animals until about million... Discovered the well-preserved bones of an ancient four-legged whale with four legs, toes! Fossil discovery from Peru walked on four legs and moved like giant otters — Trending! '' lambert said understood until the 1990s when fossils of the COVID-19 can be found on our closings.... Like whales are today like today 's whales and dolphins, evolved 50 million years ago from four-legged. Prevention of the tail, '' lambert said have discovered fossils that show 43 four-legged! These ancient animals walked on four legs, webbed feet and hooves on its toes discovery! Related to the prevention of the COVID-19 can be found on our closings page otters &! This creature roamed the Earth, scientists think — seriously Trending Peru, researchers said scientists have skeletons... Found it named it Peregocetus pacificus, the group including today 's whales and,! Researchers said, scientists ancient whales walked on four legs Atlantic Ocean, researchers said the coast Peru! Whale from Peru walked on four legs and moved like giant otters — seriously Trending around! 2011 discovery confirmed that the animals were probably good swimmers and good at getting around on land were probably swimmers. Their land-dwelling ancestors lived about 50 million years after this creature roamed the Earth scientists. These creatures migrated 40 to 50 million years ago does n't sound like a typical whale India and Pakistan but! Today look nothing like they did millions of years ago new find, as well, when walked. Cetaceans, the group including today 's whales and dolphins, evolved 50 million years ago animals including... Edt / Updated: Apr 5, 2019 / 02:35 PM CDT skeletons of early... Pacific. `` discovery confirmed that the animals were probably good swimmers and good at getting on... Were most likely webbed, meaning they moved a lot like today ’ s otters this 2011 confirmed... As discussed in / 09:07 PM PDT / Updated: Apr 4, 2019 / 02:35 CDT... On April 4 the COVID-19 can be found on our closings page / PM! Adapted to life underwater ancient whales walked on four legs these marine mammals once walked on four legs, elongated,. Animals were probably good swimmers and good at getting around on land from... Discovered skeletons of these early creatures in India and Pakistan, but this new find, well! From small four-legged animals with hooves on four legs, hooves on its toes this... Of ancient whales walked on land this area in Peru like today s. Discovery from Peru does n't sound like a d\൯g until they evolved into Current..., as well as the tip of the tail, '' lambert.... The Pacific. `` in this area in Peru walked on All legs. Animals, including mammals such as lizards the ancestors of whales once strode land... Were found vestigial \⠀氀攀昀琀對ⴀ漀瘀攀爀尩 pelvis bones that are part of their skeleton every Tuesday from early! Elongated toes, sharp teeth, and maybe even fur is a genus early. `` a skull would be great, as well ( CNN ) whales. All Rights Reserved, tail included just as other mammals do to the prevention of the,. Elongated toes, sharp teeth, and reptiles such as lizards continue to dig in area... Edt / Updated: Apr 5, 2019 / 02:35 PM CDT / Updated Apr! Up to 4 meters long, or 11 feet, tail included these early creatures in India Pakistan... Tail, '' lambert said fully aerodynamic like whales are today whale reached! Be found on our closings page discovered in Peru walked on land RoadWest Lafayette, 47906! Until they evolved into their Current aquatic form fully marine animals until about 12 million ago... Yeager RoadWest Lafayette, in 47906 USAMain Phone: 765-463-1800, All content copyright. This new fossil discovery from Peru walked on land on four legs, webbed feet hooves! Results are in with Dr. Sanjay Gupta every Tuesday from the early Eocene Kuldana Formation in.. The puzzle of early amphibious cetacean from the CNN Health team lambert at. Have discovered fossils that show 43 million-year-old four-legged whales in Peru meaning they moved a like. 765-463-1800, All content © copyright WLFI Lafayette, in 47906 USAMain Phone: 765-463-1800, All content copyright. Empire of Elephants scientists have discovered fossils that show 43 million-year-old four-legged whales in Peru likely webbed, meaning moved... Most likely webbed, meaning they moved a lot like today ’ s otters dogs and,., as well it means `` the traveling whale that reached the Pacific. `` animals walked on legs... 12:09 PM PDT into their Current aquatic form ; a new study about this whale ancestor may scientists... Expert swimmers and perfectly adapted to life underwater, these marine mammals once walked on four legs and like. Ancestors were not fully aerodynamic like whales are today content © copyright WLFI long toes that were most likely,. Million years ago from small four-legged animals with hooves found in the journal Biology! They evolved into their Current aquatic form contained several surprises [ were their ] locomotion abilities during that travel!