Project 4091: S. P. Zack, A. W. Poust, H. Wagner. 2022. Diegoaelurus, a new machaeroidine (Oxyaenidae) from the Santiago Formation (late Uintan) of southern California and the relationships of Machaeroidinae, the oldest group of sabertooth mammals. PeerJ. 10:e13032.
Abstract
Machaeroidinae is a taxonomically small clade of early and middle Eocene carnivorous mammals that includes the earliest known saber-toothed mammalian carnivores. Machaeroidine diversity is low, with only a handful of species described from North America and Asia. Here we report a new genus and species of machaeroidine, Diegoaelurus vanvalkenburghae, established on the basis of a nearly complete dentary with most of the dentition from the late Uintan (middle Eocene) portion of the Santiago Formation of southern California. The new taxon is the youngest known machaeroidine and provides the first evidence for the presence of multiple machaeroidine lineages, as it differs substantially from Apataelurus kayi, the only near-contemporaneous member of the group. Phylogenetic analysis indicates that Diegoaelurus is the sister taxon of Apataelurus, while older species are recovered as a monophyletic Machaeroides. Both phylogenetic results are relatively weakly supported. The new taxon extends the record of machaeroidines to the end of the Uintan, potentially tying machaeroidine extinction to the faunal turnover spanning the middle to late Eocene transition in North America.Read the article »
Article DOI: 10.7717/peerj.13032
Project DOI: 10.7934/P4091, http://dx.doi.org/10.7934/P4091
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 130 Total media associated with cells: 76 Total labels associated with cell media: 82 |
Characters | |
Total characters: 25 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 51 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:25/0 |
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MorphoBank Project 4091
MorphoBank Project 4091
- Creation Date:
20 September 2021 - Publication Date:
14 February 2022 - Project views: 14037
- Matrix downloads: 4
Authors' Institutions
- Arizona State University
- University of Arizona
- University of California Berkeley
- San Diego Natural History Museum
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Shawn Zack Project Administrator | 7 | 10 | 29 | 25 | 0 | 0 | 130 (126, 0, 4) | 76 | 82 | 0 | ||||
Ashley Poust Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M27661' (7 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Prototomus phobos Last Modified in 09/20/21 | 1 | 22 | 22 | 0 | 2 | 0 | 0 | 2 |
[2] † Dipsalidictis krausei Last Modified in 09/20/21 | 0 | 23 | 23 | 0 | 2 | 0 | 0 | 2 |
[3] † Machaeroides simpsoni Last Modified in 09/20/21 | 8 | 17 | 1 | 0 | 0 | 16 | 16 | 2 |
[4] † Machaeroides eothen Last Modified in 09/20/21 | 0 | 25 | 1 | 0 | 0 | 24 | 25 | 2 |
[5] † Apataelurus kayi Last Modified in 09/20/21 | 8 | 17 | 1 | 0 | 0 | 16 | 18 | 2 |
[6] † Apataelurus pishigouensis Last Modified in 09/20/21 | 17 | 8 | 1 | 0 | 0 | 7 | 7 | 2 |
[7] † Diegoaelurus vanvalkenburghae Last Modified in 12/10/21 | 11 | 14 | 1 | 0 | 0 | 13 | 16 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 14037 | |
Project overview | 905 | |
Matrix views | 405 | Matrix landing page (375 views); Diegoaelurus matrix (30 views); |
Media views | 6654 | Media search (1237 views); M823670 (179 views); M823676 (168 views); M823681 (172 views); M823682 (184 views); M823683 (178 views); M823687 (206 views); M823688 (202 views); M823689 (206 views); M823690 (197 views); M823691 (196 views); M823692 (192 views); M823693 (196 views); M823758 (224 views); M823759 (192 views); M823760 (204 views); M823761 (191 views); M823762 (201 views); M823763 (209 views); M823764 (193 views); M823765 (169 views); M823766 (177 views); M834663 (175 views); M834664 (168 views); M834665 (173 views); M834666 (172 views); M834667 (169 views); M834668 (180 views); M834669 (176 views); M834670 (168 views); |
Bibliography | 1069 | |
Views for media list | 1092 | |
Specimen list | 2621 | |
Taxon list | 1288 | |
Documents list | 3 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 16 | |
Matrix downloads | 4 | Diegoaelurus matrix (4 downloads); |
Project downloads | 12 |