A Comparison of Fossils of the Two Whale Fam ilies: Physeteridae and Monodentidae (Cetacea)

Whales are a group of marine creatures that have elicited scientifi c and layman’s curiosity since long. The present paper has a focus on elucidating fossils of two Odontoceti families viz. Physeteridae and Monodentidae. Extant Physeteridae is a monotypic family, while Monodentidae is restricted geo...

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Bibliographic Details
Published in:Mongolian Journal of Biological Sciences
Main Author: Pankaj S. Bhatnagar
Format: Article in Journal/Newspaper
Language:English
Published: National University of Mongolia 2016
Subjects:
Online Access:https://doi.org/10.22353/mjbs.2016.14.08
https://doaj.org/article/40c2ba1a80e1480dbe7e3111abff2292
Description
Summary:Whales are a group of marine creatures that have elicited scientifi c and layman’s curiosity since long. The present paper has a focus on elucidating fossils of two Odontoceti families viz. Physeteridae and Monodentidae. Extant Physeteridae is a monotypic family, while Monodentidae is restricted geographically to cold waters of the Arctic and adjoining seas. Physeteridae fossil data showed a total of 28 species, while Monodentidae had only half a dozen species. Warming of the climate in the past appears to have played a role in northward migration of Monodentids.