Macrosqualodelphis
Macrosqualodelphis is an extinct genus of river dolphins from the Early Miocene (Burdigalian) Chilcatay Formation of the Pisco Basin, Peru. The type species is M. ukupachai.
| Macrosqualodelphis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | †Squalodelphinidae |
| Genus: | †Macrosqualodelphis Bianucci et al. 2018 |
| Type species | |
| †Macrosqualodelphis ukupachai Bianucci et al. 2018 | |
Description
Macrosqualodelphis is distinguished from other squalodelphinids by its larger size (3.5 metres (11 ft)) and a less abrupt anterior tapering of rostrum in dorsal view, U-shaped left antorbital notch prominent nuchal crest higher than the frontals and nasals at the vertex, a thinner, blade-like lateral margin of the posterior portion of the rostrum, and a more voluminous temporal fossa and larger teeth.[1]
References
- Giovanni Bianucci, Giulia Bosio, Elisa Malinverno, Christian de Muizon, Igor M. Villa, Mario Urbina and Olivier Lambert. 2018. "A New Large Squalodelphinid (Cetacea, Odontoceti) from Peru Sheds Light on the Early Miocene Platanistoid Disparity and Ecology" Archived 2018-08-13 at the Wayback Machine. Royal Society Open Science. 5(4) DOI: 10.1098/rsos.172302
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