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'''''Odobenocetops''''' ({{
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''Odobenocetops''
<!--# The presence of large [[Sinus paranasal|air sinuses]] in the auditory region connected to large pterygoid sinuses.
# The large supraorbital process of the frontal bone overhanging the orbital region.
# Narial fossae opening dorsally (thought not at the apex of the skull like in other cetaceans.)
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# The elbow joint is immobile, as shown by a single partial forelimb.
{{Templat:Harvard citation no brackets|Murakami|Shimada|Hikidad|Spedae|2014}} placed Odobenocetopssidae in a large clade together with Phocoenidae (porpoises), Monodontidae (narwhal and beluga), and Albireonidae (extinct porpoise-like). This clade originated in the Pacific Ocean in the Langhian (15-13 ma) and diversified from there during the Serravallian and Tortonian (13-7 ma).<ref>{{Templat:Harvard citation no brackets|Murakami|Shimada|Hikidad|Spedae|2014|p = 504}}</ref> According to the morphological analysis of Murakami et al., ''Odobenocetops'' belongs to the middle [[Pliosen|Pliocene]].<ref>{{Templat:Harvard citation no brackets|Murakami|Shimada|Hikidad|Spedae|2014|loc = Figures 10 & 11}}</ref>
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== Description ==-->
[[Berkas:Odobenocetops.jpg|
<!--''Odobenocetops'' was an early member of the [[Lumba-lumba|dolphin]] superfamily, more closely related to narwhals than dolphins, with tusks projecting towards the rear of its body. It measured about {{Templat:Convert|2.1|m|ft|abbr = on}} long<ref name="Haines-2007">{{Templat:Harvard citation no brackets|Haines|2007}}</ref> and weighted between 150 and 650 kg. Its neck articulations show that it was very flexible, being able to turn its head over 90 degrees. This, coupled with its broad snout, similar to that of a [[walrus]], suggests that it was a bottom feeder, searching for [[Moluska|mollusks]] and sucking them out of their shells with a powerful tongue.
[[Berkas:Odobenocetops_peruvianus_female.JPG|thumb|Female ''O. peruvianus'' skull]]
The rostrum of ''Odobenocetops'' is short and rounded, in contrast to the elongated rostra found in other cetaceans. The bony nares are located near the tip of the skull, in contrast to the blowholes of whales and dolphins located on the top of the skull.
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The occurrence of tusks in ''Odobenocetops'' is a [[Evolusi konvergen|convergence]] with narwhals. However, in narwhals the male tusk is implanted in the left maxilla, whereas in ''Odobenocetops'' it is implanted in the right premaxilla. The tusks in these two genera are therefore not [[Homologi (biologi)|homologous]].<ref>{{Templat:Harvard citation no brackets|Muizon|Domning|Ketten|2002|pp = 244–245}}</ref>
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== Referensi ==
{{Reflist|30em}}▼
{{Taxonbar|from=Q131657}}
[[Kategori:Cetacea punah]]
▲{{Reflist|30em}}
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