Project 3264: S. López-Torres, M. T. Silcox, P. A. Holroyd. 2018. New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates). Palaeontologia electronica. 21.3:21.3.37A.
Specimen: † Trogolemur myodes (AMNH:12599)
View: lateral jaw

Abstract

Paromomyidae has been thought to represent the longest-lived group of stem primates (plesiadapiforms), extending from the early Paleocene to late Eocene. We analyzed primate material from the late-middle Eocene of southern California that had initially been ascribed to cf. Phenacolemur shifrae. This material falls at the lowest end of the size range for the family. The Californian specimens also exhibit several dental features that are atypical for paromomyids, such as a strong paraconid on the third lower molar, and differ from early Eocene species of Phenacolemur in lacking a distally expanded distolingual basin on upper molars. This combination of traits is more typical of earlier paromomyids with more plesiomorphic morphologies (e.g., Paromomys) and as such is inconsistent with the late age of these specimens. The purported paromomyids Ph. shifrae and Ignacius mcgrewi known in deposits of similar age are comparably tiny and share many of the characteristics found in the southern California material that distinguish them from typical early Eocene paromomyids. However, these traits are shared with some trogolemurin omomyoid euprimates that are of similar size. We argue that the material from southern California, along with Ph. shifrae and I. mcgrewi, should be transferred to a new genus of trogolemurin omomyoid. Purported European records of paromomyids later than the earliest middle Eocene are reconsidered and found to be non-diagnostic. After the early middle Eocene, only a single tooth of a paromomyid can be confirmed, indicating that the group suffered near extinction, possibly correlated with the Early Eocene Climatic Optimum.


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Article DOI: 10.26879/756

Project DOI: 10.7934/P3264, http://dx.doi.org/10.7934/P3264
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 66 Taxa
  • 1 Specimen
  • 303 Characters
Total size of project's media files: 2 MB

Download Project SDD File
Total scored cells: 11985
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 303
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 824
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:303/0
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MorphoBank Project 3264


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Sergi L
    Project Administrator
    Last logged in 01/21/19
    66113030011985
    (11670, 0, 315)
    000


    Taxonomic Overview for Matrix 'M25820' (66 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] Scandentia
    Last Modified in 01/18/19
    330929208001
    [2] † Plesiadapis/Pronothodectes
    Last Modified in 01/21/19
    23260258022001
    [3] † Purgatorius spp
    Last Modified in 01/21/19
    15414814801001
    [4] † Plesiolestes problematicus
    Last Modified in 01/21/19
    12617517403001
    [5] † Chronolestes simul
    Last Modified in 01/21/19
    11218618605001
    [6] † Adapis parisiensis
    Last Modified in 01/21/19
    1928127905001
    [7] † Notharctus sp.
    Last Modified in 01/21/19
    4928325301001
    [8] † Donrussellia sp.
    Last Modified in 01/21/19
    15415514801001
    [9] † Leptadapis magnus
    Last Modified in 01/21/19
    7922122004001
    [10] † Mahgarita stevensi
    Last Modified in 01/21/19
    95201198010001
    [11] † Pronycticebus gaudryi
    Last Modified in 01/21/19
    11219018902001
    [12] Galagoides demidoff
    Last Modified in 01/18/19
    5286286012001
    [13] Lemur catta
    Last Modified in 01/18/19
    2289289012001
    [14] Microcebus murinus
    Last Modified in 01/18/19
    4282282017001
    [15] † Absarokius sp.
    Last Modified in 01/21/19
    12618217205001
    [16] † Uintanius ameghini
    Last Modified in 01/21/19
    14715815303001
    [17] † Anaptomorphus sp.
    Last Modified in 01/21/19
    15614613908001
    [18] † Anemorhysis savagei
    Last Modified in 01/21/19
    14615815304001
    [19] † Anemorhysis sublettensis
    Last Modified in 01/21/19
    233707000001
    [20] † Anemorhysis wortmani
    Last Modified in 01/21/19
    207909006001
    [21] † Anemorhysis natronensis
    Last Modified in 01/21/19
    204939306001
    [22] † Arapahovius gazini
    Last Modified in 01/21/19
    11519618602001
    [23] † Aycrossia lovei
    Last Modified in 01/21/19
    13916715806001
    [24] † Dyseolemur pacificus
    Last Modified in 01/21/19
    12118318002001
    [25] † Washakius insignis
    Last Modified in 01/21/19
    12419017801001
    [26] † Hemiacodon gracilis
    Last Modified in 01/21/19
    8722821303001
    [27] † Loveina zephyri
    Last Modified in 01/21/19
    15615414502001
    [28] † Loveina sheai
    Last Modified in 01/21/19
    213919000001
    [29] † Loveina minuta
    Last Modified in 01/21/19
    252515100001
    [30] † Loveina wapitiensis
    Last Modified in 01/21/19
    215888800001
    [31] † Macrotarsius montanus
    Last Modified in 01/21/19
    20110310101001
    [32] † Microchoerus erinaceus
    Last Modified in 01/21/19
    9120620408001
    [33] † Nannopithex sp.
    Last Modified in 01/21/19
    10920018905001
    [34] † Melaneremia bryanti
    Last Modified in 01/21/19
    19111011002001
    [35] † Necrolemur antiquus
    Last Modified in 01/21/19
    5124824309001
    [36] † Omomys sp.
    Last Modified in 01/21/19
    8522721602001
    [37] † Pseudoloris parvulus
    Last Modified in 01/21/19
    12517517206001
    [38] † Rooneyia viejaensis
    Last Modified in 01/21/19
    2031029802001
    [39] † Shoshonius cooperi
    Last Modified in 01/21/19
    10021520003001
    [40] † Steinius vespertinus
    Last Modified in 01/21/19
    14816215302001
    [41] † Teilhardina americana
    Last Modified in 01/21/19
    13218617001001
    [42] † Teilhardina belgica
    Last Modified in 01/21/19
    14516915701001
    [43] † Teilhardina asiatica
    Last Modified in 01/21/19
    11220118902001
    [44] † Altanius orlovi
    Last Modified in 01/21/19
    14416415801001
    [45] † Tetonius sp.
    Last Modified in 01/21/19
    9322420703001
    [46] † Tetonoides sp.
    Last Modified in 01/21/19
    15116514903001
    [47] † Trogolemur myodes
    Last Modified in 01/18/19
    14715315006001
    [48] † Trogolemur amplior
    Last Modified in 01/21/19
    235636305001
    [49] † Trogolemur fragilis
    Last Modified in 01/21/19
    258444401001
    [50] † Trogolemur leonardi
    Last Modified in 01/21/19
    274282801001
    [51] † Sphacorhysis burntforkensis
    Last Modified in 01/21/19
    205939305001
    [52] † Walshina esmaraldensis
    Last Modified in 01/21/19
    218848401001
    [53] † Walshina mcgrewi
    Last Modified in 01/21/19
    234686801001
    [54] † Walshina shifrae
    Last Modified in 01/21/19
    237656501001
    [55] † Eosimias sp.
    Last Modified in 01/21/19
    11019619102001
    [56] Tarsius sp.
    Last Modified in 01/18/19
    629329007001
    [57] † Aegyptopithecus zeuxis
    Last Modified in 01/21/19
    48242242013001
    [58] † Apidium phiomense
    Last Modified in 01/21/19
    4725224907001
    [59] † Catopithecus browni
    Last Modified in 01/21/19
    61231231011001
    [60] † Parapithecus grangeri
    Last Modified in 01/21/19
    14415615504001
    [61] Aotus trivirgatus
    Last Modified in 01/18/19
    4296288011001
    [62] Callicebus moloch
    Last Modified in 01/18/19
    3292290010001
    [63] † Dolichocebus gaimanensis
    Last Modified in 01/21/19
    16013513508001
    [64] Saimiri sciureus
    Last Modified in 01/18/19
    3297290010001
    [65] † Proteopithecus sylviae
    Last Modified in 01/21/19
    14216015902001
    [66] † Strigorhysis sp.
    Last Modified in 01/21/19
    14815414807001


    Project views

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    Total project views1209
    Project overview166
    Matrix views110Matrix landing page (96 views); (2 views); López-Torres, Silcox & Holroyd (2018) matrix (12 views);
    Specimen list107
    Taxon list508
    Bibliography45
    Media views217Media search (190 views); M594428 (27 views);
    Views for media list55
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    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project26
    Matrix downloads7 (3 downloads); López-Torres, Silcox & Holroyd (2018) matrix (4 downloads);
    Media downloads1M594428 (1 download);
    Project downloads18