Project 161: J. I. Bloch, M. T. Silcox, D. M. Boyer, E. J. Sargis. 2007. New Paleocene skeletons and the relationship of plesiadapiforms to crown-clade primates. Proceedings of the National Academy of Sciences. 104 (4):1159-1164.
Specimen: Micromomyidae (UM:41870)

Abstract

Plesiadapiforms are central to studies of the origin and evolution of primates and other euarchontan mammals (tree shrews and flying lemurs). We report results from a comprehensive cladistic analysis using cranial, postcranial, and dental evidence including data from recently discovered Paleocene plesiadapiform skeletons (Ignacius clarkforkensis sp. nov.; Dryomomys szalayi, gen. et sp. nov.), and the most plesiomorphic extant tree shrew, Ptilocercus lowii. Our results, based on the fossil record, unambiguously place plesiadapiforms with Euprimates and indicate that the divergence of Primates (sensu lato) from other euarchontans likely occurred before or just after the Cretaceous/Tertiary boundary (65 Mya), notably later than logistical model and molecular estimates. Anatomical features associated with specialized pedal grasping (including a nail on the hallux) and a petrosal bulla likely evolved in the common ancestor of Plesiadapoidea and Euprimates (Euprimateformes) by 62 Mya in either Asia or North America. Our results are consistent with those from recent molecular analyses that group Dermoptera with Scandentia. We find no evidence to support the hypothesis that any plesiadapiforms were mitten-gliders or closely related to Dermoptera.


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Project DOI: 10.7934/P161, http://dx.doi.org/10.7934/P161
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 21 Taxa
  • 1 Specimen
  • 173 Characters


Download Project SDD File
Total scored cells: 2642
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 173
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 398
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:173/0
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MorphoBank Project 161

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    member name taxa specimens media media
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    (scored, NPA, "-")
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    Jonathan Bloch
    Project Administrator
    Last logged in 01/25/10
    2100017325002642
    (2642, 0, 0)
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    Taxonomic Overview for Matrix 'M439' (21 Taxa)

    taxon unscored
    cells
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    [1] Asioryctes
    Last Modified in 12/05/13
    4912412400001
    [2] Purgatorius
    Last Modified in 12/05/13
    97847600001
    [3] Palaechthon
    Last Modified in 12/05/13
    87978600001
    [4] Paromomyidae
    Last Modified in 12/05/13
    717316600001
    [5] Chronolestes
    Last Modified in 12/05/13
    91838200001
    [6] Carpolestidae
    Last Modified in 12/05/13
    916416400001
    [7] Plesiadapidae
    Last Modified in 12/05/13
    417916900001
    [8] Saxonellidae
    Last Modified in 12/05/13
    93878000001
    [9] Microsyopidae
    Last Modified in 12/05/13
    5511911800001
    [10] Micromomyidae
    Last Modified in 12/05/13
    1616215700001
    [11] Altiatlasius
    Last Modified in 12/05/13
    140353300001
    [12] Altanius
    Last Modified in 12/05/13
    103707000001
    [13] Omomyidae
    Last Modified in 12/05/13
    2215615100001
    [14] Adapidae
    Last Modified in 12/05/13
    318017000001
    [15] Elpidophorus
    Last Modified in 12/05/13
    100777300001
    [16] Plagiomene
    Last Modified in 12/05/13
    81929200001
    [17] Cynocephalidae
    Last Modified in 12/05/13
    217517100001
    [18] Ptilocercus
    Last Modified in 12/05/13
    417116900001
    [19] Tupaia
    Last Modified in 12/05/13
    317317000001
    [20] Chiroptera
    Last Modified in 12/05/13
    217317100001
    [21] Berruvius
    Last Modified in 12/05/13
    108686500001


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    Total project views15387
    Project overview2256
    Matrix views1267Matrix landing page (1044 views); Bloch et al. 2007 Matrix (223 views);
    Media views3449Media search (2686 views); M85694 (763 views);
    Taxon list5946
    Specimen list1772
    Bibliography696
    Documents list1




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    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project198
    Matrix downloads26Bloch et al. 2007 Matrix (26 downloads);
    Project downloads170
    Media downloads2M85694 (2 downloads);