Project 1144: B. D. Rankin, P. A. Holroyd. 2014. Aceroryctes dulcis, a new palaeoryctid (Mammalia, Eutheria) from the early Eocene of the Wasatch Formation of southwestern Wyoming, USA. Canadian Journal of Earth Sciences. 51 (10):919-926.
Abstract
The Palaeoryctidae are a group of small-bodied, likely insectivorous mammals known principally from the Paleocene and early Eocene (from approximately 65 to 53 Ma) of North America. Here we report on a new palaeoryctid from the early Eocene (early Wasatchian (Wa3) North American Land Mammal Age) Main Body of the Wasatch Formation, Washakie Basin, near Bitter Creek station in southwestern Wyoming, USA. Acerorcytes dulcis gen. et sp. nov. is unique among palaeoryctids in having a double-rooted P2 with a small anterior cusp, P3 with pronounced para- and metastylar cusps and a reduced but conspicuous metacone, P4 with a weakly developed metacone and an anteroposteriorly compressed protocone, and M1-2 with deep ectoflexus and a sharp metastylar blade. A phylogenetic analysis based on 32 dental characters of the nine known North American palaeoryctid species, including Aceroryctes dulcis, recovered eight equally parsimonious cladograms. Similar to prior studies, the analysis suggests that the genus Palaeoryctes is non-monophyletic, with Palaeoryctes cruoris and Aaptoryctes ivyi closely related. Aceroryctes dulcis is grouped with Ottoryctes winkleri and positioned in a more inclusive clade with Eoryctes melanus; the remaining palaeoryctid taxa, including Lainoryctes youzwyshyni, are part of an unresolved polytomy. These new findings indicate that early Eocene palaeoryctids were more diverse than previously thought, with genus richness during the early Eocene at least as great as that during the middle Paleocene.Read the article »
Article DOI: 10.1139/cjes-2014-0101
Project DOI: 10.7934/P1144, http://dx.doi.org/10.7934/P1144
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 254 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 32 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 68 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:32/0 |
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MorphoBank Project 1144
MorphoBank Project 1144
- Creation Date:
18 February 2014 - Publication Date:
13 November 2014 - Project views: 41150
- Media downloads: 11
- Matrix downloads: 7
Authors' Institutions
- University of Calgary
- University of California Berkeley
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Patricia Holroyd Project Administrator | 10 | 4 | 15 | 32 | 0 | 0 | 254 (254, 0, 0) | 0 | 0 | 0 | ||||
MorphoBank Curator Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Brian Rankin Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M2516' (10 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Aaptoryctes ivyi Last Modified in 06/08/14 | 1 | 31 | 31 | 0 | 0 | 0 | 0 | 3 |
[2] † Asioryctes nemegetensis Last Modified in 08/27/14 | 0 | 32 | 32 | 0 | 0 | 0 | 0 | 3 |
[3] † Eoryctes melanus Last Modified in 09/02/14 | 6 | 26 | 26 | 0 | 0 | 0 | 0 | 3 |
[4] † Ottoryctes winkleri Last Modified in 06/08/14 | 0 | 32 | 32 | 0 | 0 | 0 | 0 | 3 |
[5] † Palaeoryctes cruoris Last Modified in 06/08/14 | 7 | 25 | 25 | 0 | 0 | 0 | 0 | 3 |
[6] † Palaeoryctes jepseni Last Modified in 06/08/14 | 5 | 29 | 27 | 0 | 0 | 0 | 0 | 3 |
[7] † Palaeoryctes puercensis Last Modified in 06/08/14 | 1 | 31 | 31 | 0 | 0 | 0 | 0 | 3 |
[8] † Palaeoryctes punctatus Last Modified in 06/08/14 | 14 | 18 | 18 | 0 | 0 | 0 | 0 | 3 |
[9] † Aceroryctes dulcis Last Modified in 09/02/14 | 16 | 16 | 16 | 0 | 0 | 0 | 0 | 3 |
[10] † Lainoryctes youzwyshyni Last Modified in 08/27/14 | 18 | 14 | 14 | 0 | 0 | 0 | 0 | 3 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 41150 | |
Project overview | 4535 | |
Matrix views | 3143 | Matrix landing page (2831 views); Modification of Bloch et al. 2004 matrix (312 views); |
Media views | 18220 | Media search (5948 views); M336543 (806 views); M333180 (833 views); M336544 (795 views); M332994 (784 views); M332995 (825 views); M332996 (805 views); M332997 (857 views); M332998 (921 views); M332999 (855 views); M333184 (778 views); M333187 (793 views); M333188 (783 views); M333189 (807 views); M333190 (811 views); M336542 (819 views); |
Bibliography | 1372 | |
Specimen list | 5227 | |
Taxon list | 8647 | |
Documents list | 6 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 415 | |
Matrix downloads | 7 | Modification of Bloch et al. 2004 matrix (7 downloads); |
Project downloads | 397 | |
Media downloads | 11 | M333184 (2 downloads); M332999 (1 download); M336544 (2 downloads); M336543 (1 download); M336542 (2 downloads); M333180 (2 downloads); M332994 (1 download); |