Desmatophoca
genus of mammals
Desmatophoca is an extinct genus of early pinniped that lived during the Miocene, and is named from the Greek "phoca", meaning seal. A taxon of the family Desmatophocidae, it shares some morphological similarities with modern true seals. Two species are recognized: Desmatophoca oregonensis and Desmatophoca brachycephala. Little information exists regarding Desmatophoca, due to the small number of fossil samples obtained and identified.
Unlike modern pinnipeds, Desmatophoca did not survive into the Holocene. There is some scientific debate as to whether any Desmatophoca species may have been present in the Oligocene, but without fossil samples obtained from this era, this is based primarily on conjecture. All samples of fossil Desmatophoca were found in marine deposits in Washington and Oregon, in the USA, which could indicate a geographic range of what is now the Pacific Northwest.
Description
Despite sharing morphological similarities with extant true seals, Desmatophoca differ in unique and important ways. They had significantly shorter tails, and were likely much shorter overall than modern seals. Despite their small size compared with the seals of today, they had heavier, and likely more powerful jaws.
Begin with the source’s own compact description: “Desmatophoca” is genus of mammals. The dossier treats that line as a proposition to test through Desmatophoca, genus and mammals, not as a finished interpretation.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jan 4, 2024. The linked authority identifier is Q1635102. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Desmatophoca” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.