Morphobank

Project 4337: C. J. EVERETT, T. A. DEMÉRÉ, A. R. WYSS. 2023. A new species of Pinnarctidion from the Pysht Formation of Washington State (U.S.A.) and a phylogenetic analysis of basal pan-pinnipeds (Eutheria, Carnivora). Journal of Vertebrate Paleontology. 42 (2):e2178930.

Specimen: † Enaliarctos mealsi (unvouchered)
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Abstract

A nearly complete skull and limited postcrania, (SDSNH 146624), from the late Oligocene of the Pysht Formation (Clallam County, Washington State, U.S.A.), represent a new species of Pinnarctidion, a pan-pinniped previously restricted to California and Oregon. Here, we describe SDSNH 146624 in detail and present results of a comprehensive phylogenetic analysis of early-diverging pan-pinnipeds. Pinnarctidion iverseni, sp. nov., recognized on the basis of this specimen, is diagnosed by its posteriorly broad palate, anteriorly narrow rostrum, dorsoventrally deep zygomatic arches, and posterior accessory cusps on P3-4. Phylogenetic analysis recovered P. iverseni as most closely related to P. bishopi from the Jewett Sand of California’s Central Valley. The well-preserved and reasonably complete skull and upper dentition of SDSNH 146624 help clarify relationships among the proximal outgroups of crown clade pinnipeds.

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Article DOI: 10.1080/02724634.2023.2178930

Project DOI: 10.7934/P4337, http://dx.doi.org/10.7934/P4337

This project contains	Matrices
1 Media 1 Matrix 1 Document 18 Taxa 1 Specimen 103 Characters Total size of project's media files: 99.75k Download Project SDD File	Total scored cells: 1561 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 103 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 270 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:103/0

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MorphoBank Project 4337

Creation Date:
24 July 2022
Publication Date:
10 August 2023
Matrix downloads: 4

Authors' Institutions

University of California Santa Barbara

San Diego Natural History Museum

Members

Christopher Everett
Project Administrator

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Taxonomic Overview for Matrix 'M29315' (18 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] Canis lupus Taxon name last Modified on 06/21/23	0	103	103	0	0	0	0	1
[2] Ursus arctos Taxon name last Modified on 06/21/23	0	103	103	0	0	0	0	1
[3] † Kolponomos clallamensis Taxon name last Modified on 06/21/23	18	85	85	0	0	0	0	1
[4] Lontra canadensis Taxon name last Modified on 06/21/23	3	100	100	0	0	0	0	1
[5] † Potamotherium vallentoni Taxon name last Modified on 06/21/23	2	101	101	0	0	0	0	1
[6] † Puijila darwini Taxon name last Modified on 06/21/23	12	91	91	0	0	0	0	1
[7] † Pinnarctidion iverseni Taxon name last Modified on 06/21/23	29	74	74	0	0	0	0	1
[8] † Pinnarctidion bishopi Taxon name last Modified on 06/21/23	37	66	66	0	0	0	0	1
[9] † Pinnarctidion rayi Taxon name last Modified on 06/21/23	9	94	94	0	0	0	0	1
[10] † Pteronarctos goedertae Taxon name last Modified on 06/21/23	4	99	99	0	0	0	0	1
[11] † Enaliarctos mealsi Taxon name last Modified on 06/21/23	17	86	86	0	0	0	0	1
[12] † Enaliarctos barnesi Taxon name last Modified on 06/21/23	33	70	70	0	0	0	0	1
[13] † Enaliarctos emlongi Taxon name last Modified on 06/21/23	7	96	96	0	0	0	0	1
[14] † Enaliarctos tedfordi Taxon name last Modified on 06/21/23	33	70	70	0	0	0	0	1
[15] † Enaliarctos mitchelli Taxon name last Modified on 06/21/23	62	41	41	0	0	0	0	1
[16] Otariidae Taxon name last Modified on 06/21/23	5	98	98	0	0	0	0	1
[17] Phocidae Taxon name last Modified on 06/21/23	16	87	87	0	0	0	0	1
[18] Odobenus rosmarus Taxon name last Modified on 06/21/23	6	97	97	0	0	0	0	1

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	4
Matrix downloads	4	Matrix (4 downloads);