Peregocetus is a genus of early whale that lived in what is now Peru during the Middle Eocene epoch.[1][2] Its fossil was uncovered in 2011 in the Yumaque Member (Paracas Formation) of the Pisco Basin at Playa Media Luna by a team consisting of members from Belgium, Peru, France, Italy, and the Netherlands.[3][4] Parts recovered include the jaw, front and hind legs, bits of spine, and tail. Olivier Lambert, a scientist at the Royal Belgian Institute of Natural Sciences and lead author of the study, noted that Peregocetus "fills in a crucial [knowledge] gap" about the evolution of whales and their spread.[3]
| Peregocetus Temporal range: Middle Eocene
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| Size silhouette of Peregocetus compared to a human. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | †Protocetidae |
| Subfamily: | †Protocetinae |
| Genus: | †Peregocetus Lambert et al., 2019 |
| Species | |
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Peregocetus is the first recorded quadrupedal whale from the Pacific Ocean and the Southern Hemisphere. The discovery reveals that protocetids reached the Pacific Ocean and attained a near circumequatorial distribution while retaining functional weight-bearing limbs.[1]
Description edit
Peregocetus was essentially a four-legged whale: however, it had webbed feet with small hooves on the tips of its toes, making it more capable of moving on land than modern seals. It featured sharp teeth and a long snout which suggests it fed on fish and/or crustaceans.[3][4] From its caudal vertebrae, it has been suggested that it might have possessed a flattened tail similar to a beaver.[1]
References edit
- ^ a b c Lambert, Olivier; Bianucci, Giovanni; Salas-Gismondi, Rodolfo; Di Celma, Claudio; Steurbaut, Etienne; Urbina, Mario; de Muizon, Christian (4 April 2019). "An amphibious whale from the Middle Eocene of Peru reveals early South Pacific dispersal of quadrupedal cetaceans". Current Biology. 29 (8): 1352–1359.e3. doi:10.1016/j.cub.2019.02.050. hdl:11581/425570. PMID 30955933.
- ^ Wright, Pam (5 April 2019). "Fossilized Remains of Ancient 4-Legged Whale Discovered in Peru". The Weather Channel. Retrieved 5 April 2019.
- ^ a b c Devlin, Hannah (4 April 2019). "Fossil of ancient four-legged whale with hooves discovered". The Guardian. Retrieved 4 April 2019.
- ^ a b "Unknown Species of Ancient Four-Legged Whale Uncovered in Peru". Gizmodo. 4 April 2019.