Scaphokogia
| Scaphokogia | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | Kogiidae |
| Subfamily: | †Scaphokogiinae |
| Genus: | †Scaphokogia Muizon 1988 |
| Species | |
| |
Scaphokogia is an extinct genus of pygmy sperm whales that lived off the coasts of Mexico and Peru, South America during the Late Miocene to Late Pliocene. Two species have currently been described: the type species S. cochlearis and S. totajpe. It is estimated to have reached up to 2.2–2.8 metres (7.2–9.2 ft) in total length.[1] Fossils of Scaphokogia have been found in the Tirabuzon Formation of Baja California and the Pisco Formation of Peru.[2] Scaphokogia existed about 5 million years ago, and were relatively rare animals.[3]
A 2022 study which examined specimens of multiple phseteroids, including specimens assigned to both species of Scaphokogia, and discovered bite marks consistant with the teeth of either the modern Great White Shark (Carcharodon carcharias) or the extinct Otodontid shark Otodus megalodon, on multiple regions of the skull.[4]
References
- ↑ Benites-Palomino, Aldo; Vélez-Juarbe, Jorge; Salas-Gismondi, Rodolfo; Urbina, Mario (2019-11-02). "Scaphokogia totajpe, sp. nov., a new bulky-faced pygmy sperm whale (Kogiidae) from the late Miocene of Peru". Journal of Vertebrate Paleontology. 39 (6) e1728538. Bibcode:2019JVPal..39E8538B. doi:10.1080/02724634.2019.1728538. hdl:20.500.12390/2682. ISSN 0272-4634.
- ↑ Scaphokogia at Fossilworks.org
- ↑ Hendy, Austin J. W.; Gracia, Carlos De; Wood, Aaron R.; Velez-Juarbe, Jorge (2015-04-29). "Evolutionary Patterns among Living and Fossil Kogiid Sperm Whales: Evidence from the Neogene of Central America". PLOS ONE. 10 (4) e0123909. Bibcode:2015PLoSO..1023909V. doi:10.1371/journal.pone.0123909. ISSN 1932-6203. PMC 4414568. PMID 25923213.
- ↑ Benites-Palomino, Aldo; Velez-Juarbe, Jorge; Altamirano-Sierra, Ali; Collareta, Alberto; Carrillo-Briceño, Jorge D.; Urbina, Mario (29 June 2022). "Sperm whales (Physeteroidea) from the Pisco Formation, Peru, and their trophic role as fat sources for late Miocene sharks". Proceedings of the Royal Society B: Biological Sciences. 289 (1977): 20220774. doi:10.1098/rspb.2022.0774. ISSN 0962-8452. PMC 9240678. PMID 35765834.
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External links
- Scaphokogia at ZipcodeZoo