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.
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.Read the article »
Article DOI: 10.1080/02724634.2023.2178930
Project DOI: 10.7934/P4337, http://dx.doi.org/10.7934/P4337
This project contains | Matrices |
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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
MorphoBank Project 4337
- Creation Date:
24 July 2022 - Publication Date:
10 August 2023 - Project views: 2075
- Matrix downloads: 4
Authors' Institutions
- University of California Santa Barbara
- San Diego Natural History Museum
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Christopher Everett Project Administrator | 1 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
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 Last Modified in 06/21/23 | 0 | 103 | 103 | 0 | 0 | 0 | 0 | 1 |
[2] Ursus arctos Last Modified in 06/21/23 | 0 | 103 | 103 | 0 | 0 | 0 | 0 | 1 |
[3] † Kolponomos clallamensis Last Modified in 06/21/23 | 18 | 85 | 85 | 0 | 0 | 0 | 0 | 1 |
[4] Lontra canadensis Last Modified in 06/21/23 | 3 | 100 | 100 | 0 | 0 | 0 | 0 | 1 |
[5] † Potamotherium vallentoni Last Modified in 06/21/23 | 2 | 101 | 101 | 0 | 0 | 0 | 0 | 1 |
[6] † Puijila darwini Last Modified in 06/21/23 | 12 | 91 | 91 | 0 | 0 | 0 | 0 | 1 |
[7] † Pinnarctidion iverseni Last Modified in 06/21/23 | 29 | 74 | 74 | 0 | 0 | 0 | 0 | 1 |
[8] † Pinnarctidion bishopi Last Modified in 06/21/23 | 37 | 66 | 66 | 0 | 0 | 0 | 0 | 1 |
[9] † Pinnarctidion rayi Last Modified in 06/21/23 | 9 | 94 | 94 | 0 | 0 | 0 | 0 | 1 |
[10] † Pteronarctos goedertae Last Modified in 06/21/23 | 4 | 99 | 99 | 0 | 0 | 0 | 0 | 1 |
[11] † Enaliarctos mealsi Last Modified in 06/21/23 | 17 | 86 | 86 | 0 | 0 | 0 | 0 | 1 |
[12] † Enaliarctos barnesi Last Modified in 06/21/23 | 33 | 70 | 70 | 0 | 0 | 0 | 0 | 1 |
[13] † Enaliarctos emlongi Last Modified in 06/21/23 | 7 | 96 | 96 | 0 | 0 | 0 | 0 | 1 |
[14] † Enaliarctos tedfordi Last Modified in 06/21/23 | 33 | 70 | 70 | 0 | 0 | 0 | 0 | 1 |
[15] † Enaliarctos mitchelli Last Modified in 06/21/23 | 62 | 41 | 41 | 0 | 0 | 0 | 0 | 1 |
[16] Otariidae Last Modified in 06/21/23 | 5 | 98 | 98 | 0 | 0 | 0 | 0 | 1 |
[17] Phocidae Last Modified in 06/21/23 | 16 | 87 | 87 | 0 | 0 | 0 | 0 | 1 |
[18] Odobenus rosmarus Last Modified in 06/21/23 | 6 | 97 | 97 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 2075 | |
Project overview | 182 | |
Media views | 488 | Media search (413 views); M863209 (75 views); |
Documents list | 118 | |
Matrix views | 180 | Matrix landing page (170 views); Matrix (10 views); |
Bibliography | 91 | |
Views for media list | 149 | |
Specimen list | 254 | |
Taxon list | 613 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 4 | |
Matrix downloads | 4 | Matrix (4 downloads); |