Project 2289: D. Dilkes. 2015. Carpus and tarsus of Temnospondyli. Vertebrate Anatomy Morphology Palaeontology. 1 (1):51-87.
Specimen: † Eryops megacephalus (unvouchered)

Abstract

The carpus of Eryops megacephalus and tarsus of Acheloma cumminsi known from complete and articulated individuals have provided the standard anatomy of these skeletal regions for temnospondyls. Restudy of the carpus of Eryops confirms the presence of only four digits, but refutes evidence for a prepollex, postminimus, and distal carpal 5. The supposed contact surface on centrale 1 for a prepollex is reinterpreted as part of the articulation for metacarpal 1 that includes distal carpal 1. Contrary to previous interpretations, a notch on the intermedium does not fit against the lateral corner of the radius. An articular surface on the distal end of the ulna thought previously to contact an absent postminimus fits against the ulnare. Preparation of the tarsus of the type specimen of Trematops milleri (junior synonym of Acheloma cumminsi) and a previously undescribed crus and pes of Eryops finds no evidence for a pretarsale in either genus. Centrale 4 of the tarsus shares a similar rectangular shape with a wide contact for the tibiale among several temnospondyls whether terrestrial or aquatic. Limited flexibility of the carpus of Eryops and a strong palmar arch are probably weight-bearing features. A proximal-distal line of flexibility is present along the tibial side of the tarsus between the tibiale and centrale 4 and between centrale 2 and centrale 1. A phylogenetic analysis of Temnospondyli including new characters of the carpus and tarsus reveals considerable instability, highlighting the significance of Dendrerpeton acadianum, Balanerpeton woodi, Capetus palustris, and Iberospondylus schultzei.


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Project DOI: 10.7934/P2289, http://dx.doi.org/10.7934/P2289
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 73 Taxa
  • 1 Specimen
  • 220 Characters


Download Project SDD File
Total scored cells: 13690
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 220
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 462
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:220/0
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MorphoBank Project 2289


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    David Dilkes
    Project Administrator
    Last logged in 10/20/15
    73112200013690
    (13552, 0, 138)
    000


    Taxonomic Overview for Matrix 'M23626' (73 Taxa)

    taxon unscored
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    scored
    cells
    no cell
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    "-" cellscell images labels on
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    [1] Proterogyrinus scheelei
    Last Modified in 10/11/15
    421421402001
    [2] Greererpeton burkemorani
    Last Modified in 10/11/15
    521321302001
    [3] Edops cragi
    Last Modified in 10/11/15
    4916916902001
    [4] Adamaterpeton ohioensis
    Last Modified in 10/11/15
    7214614602001
    [5] Cochleosaurus bohemicus
    Last Modified in 10/11/15
    1520220203001
    [6] Nigerpeton ricqlesi
    Last Modified in 10/11/15
    7214714701001
    [7] Chenoprosopus milleri
    Last Modified in 10/11/15
    6515315302001
    [8] Dendrerpeton acadianum
    Last Modified in 10/11/15
    1020720703001
    [9] Balanerpeton woodi
    Last Modified in 10/11/15
    321521403001
    [10] Trimerorachis insignis
    Last Modified in 10/11/15
    1020920901001
    [11] Neldasaurus wrightae
    Last Modified in 10/11/15
    7114714702001
    [12] Isodectes obtusus
    Last Modified in 10/11/15
    1320420403001
    [13] Acroplous vorax
    Last Modified in 10/11/15
    3418318303001
    [14] Dvinosaurus primus
    Last Modified in 10/11/15
    1420320303001
    [15] Thabanchuia oomie
    Last Modified in 10/11/15
    2818618606001
    [16] Tupilakosaurus wetlugensis
    Last Modified in 10/11/15
    6115415405001
    [17] Capetus palustris
    Last Modified in 10/11/15
    5915815803001
    [18] Iberospondylus schultzei
    Last Modified in 10/11/15
    4617217202001
    [19] Acanthostomatops vorax
    Last Modified in 10/11/15
    1120620603001
    [20] Zatrachys serratus
    Last Modified in 10/11/15
    7014814802001
    [21] Micromelerpeton credneri
    Last Modified in 10/11/15
    1420520501001
    [22] Limnogyrinus elegans
    Last Modified in 10/11/15
    2919019001001
    [23] Branchierpeton amblystomum
    Last Modified in 10/11/15
    2819119101001
    [24] Branchiosaurus salamandroides
    Last Modified in 10/11/15
    2319419403001
    [25] Apateon pedestris
    Last Modified in 10/11/15
    2019719703001
    [26] Micropholis stowi
    Last Modified in 10/11/15
    1020720703001
    [27] Platyrhinops lyelli
    Last Modified in 10/11/15
    1120620603001
    [28] Amphibamus grandiceps
    Last Modified in 10/11/15
    1420320303001
    [29] Doleserpeton annectens
    Last Modified in 10/11/15
    1120620603001
    [30] Gerobatrachus hottoni
    Last Modified in 10/11/15
    5916016001001
    [31] Dissorophus multicinctus
    Last Modified in 10/11/15
    920920902001
    [32] Cacops aspidephorus/morrisi
    Last Modified in 10/11/15
    1420420402001
    [33] Broiliellus texensis
    Last Modified in 10/11/15
    2419419402001
    [34] Acheloma cumminsi
    Last Modified in 10/11/15
    1120620603001
    [35] Phonerpeton pricei
    Last Modified in 10/11/15
    3618218202001
    [36] Ecolsonia cutlerensis
    Last Modified in 10/11/15
    1919919902001
    [37] Eoscopus lockardi
    Last Modified in 10/11/15
    4616916905001
    [38] Onchiodon labyrinthicus
    Last Modified in 10/11/15
    1020720703001
    [39] † Eryops megacephalus
    Last Modified in 10/20/15
    221521503001
    [40] Sclerocephalus haeuseri
    Last Modified in 10/11/15
    121821801001
    [41] Glanochthon latirostris
    Last Modified in 10/11/15
    1120820801001
    [42] Archegosaurus decheni
    Last Modified in 10/11/15
    421521501001
    [43] Platyoposaurus stuckenbergi
    Last Modified in 10/11/15
    1920020001001
    [44] Australerpeton cosgriffi
    Last Modified in 10/11/15
    2819119101001
    [45] Lapillopsis nana
    Last Modified in 10/11/15
    6715015003001
    [46] Peltobatrachus pustulatus
    Last Modified in 10/11/15
    6815015002001
    [47] Rhineceps nyasaensis
    Last Modified in 10/11/15
    3518418401001
    [48] Uranocentrodon senekalensis
    Last Modified in 10/11/15
    1120820801001
    [49] Broomistega putterilli
    Last Modified in 10/11/15
    4717217201001
    [50] Lydekkerina huxleyi
    Last Modified in 10/11/15
    1620320301001
    [51] Chomatobatrachus halei
    Last Modified in 10/11/15
    6615315301001
    [52] Sangaia lavinai
    Last Modified in 10/11/15
    8013813802001
    [53] Peltostega erici
    Last Modified in 10/11/15
    11610410400001
    [54] Laidleria gracilis
    Last Modified in 10/11/15
    5016616604001
    [55] Siderops kehli
    Last Modified in 10/11/15
    1819819804001
    [56] Batrachosuchus watsoni
    Last Modified in 10/11/15
    6115515504001
    [57] Plagiosuchus pustuliferus
    Last Modified in 10/11/15
    1919919902001
    [58] Gerrothorax pulcherrimus
    Last Modified in 10/11/15
    1220620602001
    [59] Edingerella madagascariensis
    Last Modified in 10/11/15
    2519419401001
    [60] Watsonisuchus gunganj
    Last Modified in 10/11/15
    6415615600001
    [61] Benthosuchus sushkini
    Last Modified in 10/11/15
    2519519500001
    [62] Trematosaurus brauni
    Last Modified in 10/11/15
    5816216200001
    [63] Trematolestes hagdorni
    Last Modified in 10/11/15
    1420520501001
    [64] Lyrocephaliscus euri
    Last Modified in 10/11/15
    8113913900001
    [65] Callistomordax kugleri
    Last Modified in 10/11/15
    1620320301001
    [66] Metoposaurus diagnosticus
    Last Modified in 10/11/15
    1120820801001
    [67] Wetlugasaurus angustifrons
    Last Modified in 10/11/15
    6315715700001
    [68] Parotosuchus nasutus
    Last Modified in 10/11/15
    6016016000001
    [69] Eryosuchus garjainovi
    Last Modified in 10/11/15
    2419619600001
    [70] Paracyclotosaurus davidi
    Last Modified in 10/11/15
    1520420401001
    [71] Eocyclotosaurus wellsi
    Last Modified in 10/11/15
    3318718700001
    [72] Cyclotosaurus robustus
    Last Modified in 10/11/15
    3618418400001
    [73] Mastodonsaurus giganteus
    Last Modified in 10/11/15
    1520420401001


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    Matrix views1252Matrix landing page (1066 views); Data matrix for Carpus and tarsus of Temnospondyli (186 views);
    Media views2414Media search (2104 views); M402217 (310 views);
    Specimen list899
    Taxon list5605
    Bibliography395




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