Project 675: S. P. Zack, T. A. Penkrot, J. I. Bloch, K. D. Rose. 2005. Affinities of 'hyopsodontids' to elephant shrews and a Holarctic origin of Afrotheria. Nature. 434 (7032):497-501.
Specimen: † Haplomylus speirianus (USNM:493902)
View: Dorsal

Abstract

Macroscelideans (elephant shrews or sengis) are small-bodied (25-540 g), cursorial (running) and saltatorial (jumping), insectivorous and omnivorous placental mammals represented by at least 15 extant African species classified in four genera. Macroscelidea is one of several morphologically diverse but predominantly African placental orders classified in the superorder Afrotheria by molecular phylogeneticists. The distribution of modern afrotheres, in combination with a basal position for Afrotheria within Placentalia and molecular divergence-time estimates, has been used to link placental diversification with the mid-Cretaceous separation of South America and Africa. Morphological phylogenetic analyses do not support Afrotheria and the fossil record favours a northern origin of Placentalia. Here we describe fossil postcrania that provide evidence for a close relationship between North American Palaeocene-Eocene apheliscine 'hyopsodontid' 'condylarths' (early ungulates or hoofed mammals) and extant Macroscelidea. Apheliscine postcranial morphology is consistent with a relationship to other ungulate-like afrotheres (Hyracoidea, Proboscidea) but does not provide support for a monophyletic Afrotheria. As the oldest record of an afrothere clade, identification of macroscelidean relatives in the North American Palaeocene argues against an African origin for Afrotheria, weakening support for linking placental diversification to the break-up of Gondwana.


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Project DOI: 10.7934/P675, http://dx.doi.org/10.7934/P675
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 17 Taxa
  • 1 Specimen
  • 52 Characters


Download Project SDD File
Total scored cells: 831
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 52
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 131
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:52/0
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MorphoBank Project 675


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    (scored, NPA, "-")
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    MorphoBank Curator
    Project Administrator
    Last logged in 03/05/12
    1110000
    (0, 0, 0)
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    Maureen Admin
    Full membership
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    0000000
    (0, 0, 0)
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    Shawn Zack
    Full membership
    Last logged in 03/02/12
    16005200831
    (807, 0, 24)
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    Taxonomic Overview for Matrix 'M1548' (16 Taxa)

    taxon unscored
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    scored
    cells
    no cell
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    NPA
    cells
    "-" cellscell images labels on
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    [1] † Protungulatum donnae
    Last Modified in 12/05/13
    0525200003
    [2] † Hyopsodus spp.
    Last Modified in 12/05/13
    0525200003
    [3] † Apheliscus spp.
    Last Modified in 12/05/13
    1515100003
    [4] † Haplomylus spp.
    Last Modified in 12/05/13
    0525200003
    [5] † Paschatherium spp.
    Last Modified in 12/05/13
    0525200003
    [6] † Mithrandir gillianus
    Last Modified in 12/05/13
    0525200003
    [7] † Chriacus gallinae
    Last Modified in 12/05/13
    0515101003
    [8] † Ectocion spp.
    Last Modified in 12/05/13
    0525200003
    [9] † Tetraclaenodon puercensis
    Last Modified in 12/05/13
    03838014003
    [10] † Claenodon spp.
    Last Modified in 12/05/13
    0525200003
    [11] † Diacodexis secans
    Last Modified in 12/05/13
    0525200003
    [12] † "Hyracotherium" spp.
    Last Modified in 12/05/13
    0505002003
    [13] † Molinodus suarezi
    Last Modified in 12/05/13
    0474705003
    [14] † Dissacus spp.
    Last Modified in 12/05/13
    0515101003
    [15] Macroscelidea
    Last Modified in 12/05/13
    0515101003
    [16] Hyracoidea
    Last Modified in 12/05/13
    0525200003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views18217
    Project overview2207
    Matrix views1623Matrix landing page (1415 views); Zack et al 2005 afrothere matrix (208 views);
    Media views3809Media search (3214 views); M102600 (595 views);
    Specimen list1687
    Taxon list5967
    Documents list1176
    Bibliography693
    Views for media list1055




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project142
    Matrix downloads10Zack et al 2005 afrothere matrix (10 downloads);
    Project downloads132