Project 2610: Gregg F. Gunnell. 2002. Notharctine primates (Adapiformes) from the early to middle Eocene (Wasatchian–Bridgerian) of Wyoming: transitional species and the origins of Notharctus and Smilodectes. Journal of Human Evolution. 43 (3):353–380.
Specimen: † Smilodectes gracilis (unvouchered)
View: Skeleton

Abstract

Notharctine adapiform primates are an abundant element of early (Wasatchian) and middle (Bridgerian) Eocene faunal assemblages from the western interior of North America. Early Eocene notharctine samples are dominated byCantius with Pelycodus and Copelemur being much rarer and more restricted in their geographic distribution. Cantius is replaced in the middle Eocene by Notharctus and Smilodectes, both of which are common but less widespread, being best known from southwestern Wyoming. The origin of these two middle Eocene taxa has not been well understood, due to a lack of transitional Wasatchian–Bridgerian notharctine faunal samples or because known samples had not been adequately studied. Field work at South Pass in the Greater Green River Basin has produced a relatively large sample of earliest Bridgerian notharctines. Combining this sample with a large, but previously under-studied, sample of notharctines from the latest Wasatchian and earliest Bridgerian in the Wind River Basin has clarified the relationships among Notharctus,Smilodectes , and earlier occurring notharctines. Notharctus first appears in the latest Wasatchian (Wa7), represented by N. venticolus. Phylogenetic analysis supports a Notharctus clade that shares sister taxon status with Cantius nunienus and indicates that Notharctus arose through bifurcation of the lineage containing the last common ancestor of C. nunienus and Notharctus. The origins of Smilodectes are less clear. Phylogenetic analysis supports a clade consisting of Smilodectes and Copelemur, but the origins of both taxa are not established as yet. North American notharctines are typified by relatively low taxonomic diversity, but relatively high abundance and high dental morphological variation (disparity). These attributes are opposite to those of North American omomyids, reflecting differences in ecomorphospace between these two primate radiations.


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Article DOI: 10.1006/jhev.2002.0582

Project DOI: 10.7934/P2610, http://dx.doi.org/10.7934/P2610
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 17 Taxa
  • 1 Specimen
  • 53 Characters
Total size of project's media files: 1 MB

Download Project SDD File
Total scored cells: 904
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 53
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 150
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:53/0
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MorphoBank Project 2610

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    Sharon Doyle
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    Gregg Gunnell
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    Taxonomic Overview for Matrix 'M24463' (17 Taxa)

    taxon unscored
    cells
    scored
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    no cell
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    "-" cellscell images labels on
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    [1] † Teilhardina belgica
    Last Modified in 02/06/17
    3525000003
    [2] † Copelemur tutus
    Last Modified in 02/06/17
    10454300003
    [3] † Copelemur australotutus
    Last Modified in 02/06/17
    0535300003
    [4] † Copelemur praetutus
    Last Modified in 02/06/17
    6474700003
    [5] † Cantius abditus
    Last Modified in 02/06/17
    1535200003
    [6] † Cantius nunienus
    Last Modified in 02/06/17
    0635300003
    [7] † Cantius torresi
    Last Modified in 02/06/17
    6504700003
    [8] † Cantius ralstoni
    Last Modified in 02/06/17
    1555200003
    [9] † Cantius mckennai
    Last Modified in 02/06/17
    1565200003
    [10] † Cantius trigonodus
    Last Modified in 02/06/17
    1565200003
    [11] † Notharctus venticolus
    Last Modified in 02/06/17
    0675300003
    [12] † Notharctus robinsoni
    Last Modified in 02/06/17
    1555200003
    [13] † Notharctus tenebrosus
    Last Modified in 02/06/17
    0585300003
    [14] † Smilodectes gracilis
    Last Modified in 02/21/17
    0565300003
    [15] † Smilodectes mcgrewi
    Last Modified in 02/06/17
    0575300003
    [16] † Smilodectes sororis
    Last Modified in 02/06/17
    13434000003
    [17] † Pelycodus jarrovii
    Last Modified in 02/06/17
    16383700003


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