Project 571: L. T. Holbrook, J. Lapergola. 2011. A New Genus of Perissodactyl (Mammalia) from the Bridgerian of Wyoming, with Comments on Basal Perissodactyl Phylogeny. Journal of Vertebrate Paleontology. 31 (4):895-901.
Abstract
An unusual specimen of a perissodactyl from the Bridgerian (late early to early middle Eocene) of Wyoming provides the basis for a new genus and species, Mesolambdolophus setoni. The specimen (MCZ 19585) displays an unusual combination of features: first lower premolar absent; p2 and p3 not molariform; p4 submolariform; anterior end of metalophid lingually placed, contacting metaconid; metaconid not twinned; and large hypoconulid on m3. The orientation of the metalophid excludes this specimen from Ceratomorpha, and the size and characters of this specimen exclude it from any known genus of Bridgerian perissodactyl, as well as from any other Eocene perissodactyl taxon. Including this taxon in a phylogenetic analysis of basal perissodactyls places Mesolambdolophus as sister taxon to Tapiromorpha, but we consider any assessment of the position of Mesolambdolophus tentative at best, given the limitations of analyses of basal perissodactyls currently available. The presence of a small Bridgerian ‘hippomorph’ form that is larger than Orohippus reduces the reliability of assigning isolated postcrania to Bridgerian perissodactyl taxa on the basis of size.Read the article »
Project DOI: 10.7934/P571, http://dx.doi.org/10.7934/P571
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 4383 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 125 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 317 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:125/0 |
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MorphoBank Project 571
MorphoBank Project 571
- Creation Date:
10 August 2011 - Publication Date:
13 September 2011 - Project views: 46176
- Matrix downloads: 34
This research
supported by
Authors' Institutions
- Academy of Natural Sciences of Drexel University, Philadelphia
- American Museum of Natural History
- Villanova University
- Rowan University
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 1 | 1 | 5 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Maureen Admin Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Luke Holbrook Full membership | 42 | 0 | 0 | 125 | 0 | 0 | 4383 (4163, 0, 220) | 0 | 0 | 0 | ||||
Seth Kaufman | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M1284' (42 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Phenacodontids Last Modified in 12/05/13 | 1 | 109 | 105 | 0 | 19 | 0 | 0 | 4 |
[2] Radinskya Last Modified in 12/05/13 | 74 | 49 | 49 | 0 | 2 | 0 | 0 | 4 |
[3] Phenacolophids Last Modified in 12/05/13 | 21 | 92 | 92 | 0 | 12 | 0 | 0 | 4 |
[4] Tethytheres Last Modified in 12/05/13 | 1 | 115 | 113 | 0 | 11 | 0 | 0 | 4 |
[5] Hyracoids Last Modified in 12/05/13 | 1 | 116 | 114 | 0 | 10 | 0 | 0 | 4 |
[6] Hallensia Last Modified in 12/05/13 | 4 | 120 | 120 | 0 | 1 | 0 | 0 | 4 |
[7] H. leporinum Last Modified in 12/05/13 | 54 | 71 | 70 | 0 | 1 | 0 | 0 | 4 |
[8] Palaeosyops Last Modified in 12/05/13 | 6 | 110 | 110 | 0 | 9 | 0 | 0 | 4 |
[9] Lambdotherium Last Modified in 12/05/13 | 1 | 121 | 121 | 0 | 3 | 0 | 0 | 4 |
[10] Isectolophus Last Modified in 12/05/13 | 22 | 92 | 92 | 0 | 11 | 0 | 0 | 4 |
[11] Homogalax Last Modified in 12/05/13 | 6 | 111 | 111 | 0 | 8 | 0 | 0 | 4 |
[12] Cardiolophus Last Modified in 12/05/13 | 21 | 98 | 98 | 0 | 6 | 0 | 0 | 4 |
[13] Orientolophus Last Modified in 12/05/13 | 68 | 57 | 57 | 0 | 0 | 0 | 0 | 4 |
[14] Cymbalophus Last Modified in 12/05/13 | 39 | 86 | 85 | 0 | 1 | 0 | 0 | 4 |
[15] Systemodon Last Modified in 12/05/13 | 33 | 91 | 91 | 0 | 1 | 0 | 0 | 4 |
[16] Sifrhippus Last Modified in 12/05/13 | 18 | 107 | 106 | 0 | 1 | 0 | 0 | 4 |
[17] Arenahippus grangeri Last Modified in 12/05/13 | 2 | 122 | 122 | 0 | 1 | 0 | 0 | 4 |
[18] Xenicohippus craspedotum Last Modified in 12/05/13 | 22 | 102 | 102 | 0 | 1 | 0 | 0 | 4 |
[19] Xenicohippus grangeri Last Modified in 12/05/13 | 34 | 91 | 91 | 0 | 0 | 0 | 0 | 4 |
[20] Xenicohippus osborni Last Modified in 12/05/13 | 1 | 123 | 123 | 0 | 1 | 0 | 0 | 4 |
[21] Pliolophus vulpiceps Last Modified in 12/05/13 | 15 | 109 | 109 | 0 | 1 | 0 | 0 | 4 |
[22] Protorohippus montanum Last Modified in 12/05/13 | 17 | 108 | 107 | 0 | 1 | 0 | 0 | 4 |
[23] Protorohippus venticolum Last Modified in 12/05/13 | 1 | 123 | 123 | 0 | 1 | 0 | 0 | 4 |
[24] Orohippus major Last Modified in 12/05/13 | 33 | 91 | 91 | 0 | 1 | 0 | 0 | 4 |
[25] Orohippus pumilus Last Modified in 12/05/13 | 1 | 121 | 121 | 0 | 3 | 0 | 0 | 4 |
[26] Epihippus Last Modified in 12/05/13 | 15 | 107 | 107 | 0 | 3 | 0 | 0 | 4 |
[27] Triplopus Last Modified in 12/05/13 | 8 | 100 | 100 | 0 | 17 | 0 | 0 | 4 |
[28] Hyrachyus Last Modified in 12/05/13 | 1 | 106 | 106 | 0 | 18 | 0 | 0 | 4 |
[29] Protapirus Last Modified in 12/05/13 | 16 | 92 | 92 | 0 | 17 | 0 | 0 | 4 |
[30] Helaletes Last Modified in 12/05/13 | 24 | 89 | 89 | 0 | 12 | 0 | 0 | 4 |
[31] Heptodon Last Modified in 12/05/13 | 4 | 109 | 109 | 0 | 12 | 0 | 0 | 4 |
[32] Eomoropus Last Modified in 12/05/13 | 18 | 100 | 100 | 0 | 7 | 0 | 0 | 4 |
[33] Lophiaspis Last Modified in 12/05/13 | 44 | 76 | 76 | 0 | 5 | 0 | 0 | 4 |
[34] Lophiodon Last Modified in 12/05/13 | 29 | 84 | 84 | 0 | 12 | 0 | 0 | 4 |
[35] Pachynolophus Last Modified in 12/05/13 | 9 | 116 | 115 | 0 | 1 | 0 | 0 | 4 |
[36] Propachynolophus Last Modified in 12/05/13 | 29 | 96 | 96 | 0 | 0 | 0 | 0 | 4 |
[37] Lophiotherium Last Modified in 12/05/13 | 33 | 90 | 90 | 0 | 2 | 0 | 0 | 4 |
[38] Propalaeotherium Last Modified in 12/05/13 | 1 | 125 | 123 | 0 | 1 | 0 | 0 | 4 |
[39] Plagiolophus Last Modified in 12/05/13 | 5 | 118 | 118 | 0 | 2 | 0 | 0 | 4 |
[40] Anchilophus Last Modified in 12/05/13 | 55 | 67 | 67 | 0 | 3 | 0 | 0 | 4 |
[41] Palaeotherium Last Modified in 12/05/13 | 0 | 123 | 123 | 0 | 2 | 0 | 0 | 4 |
[42] Mesolambdolophus Last Modified in 12/05/13 | 95 | 30 | 30 | 0 | 0 | 0 | 0 | 4 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 46176 | |
Project overview | 4345 | |
Taxon list | 18398 | |
Bibliography | 1358 | |
Matrix views | 2598 | Matrix landing page (2260 views); Matrix from Froehlich (1999) with Mesolamdolophus added and corrections made by Holbrook and LaPergola (2011). (338 views); |
Documents list | 1829 | |
Views for media list | 4014 | |
Media views | 10328 | Media search (5848 views); M92884 (864 views); M93396 (917 views); M93399 (903 views); M93400 (914 views); M93398 (882 views); |
Specimen list | 3306 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 459 | |
Project downloads | 423 | |
Document downloads | 2 | Copyright permission from SVP (2 downloads); |
Matrix downloads | 34 | Matrix from Froehlich (1999) with Mesolamdolophus added and corrections made by Holbrook and LaPergola (2011). (34 downloads); |