Project 3203: A. C. Pritchard,H.-D. Sues. 2019. Postcranial remains of Teraterpeton hrynewichorum (Reptilia: Archosauromorpha) and the mosaic evolution of the saurian postcranial skeleton. Journal of Systematic Palaeontology. 2019:1–21.
Specimen: † Teraterpeton hrynewichorum full codings (NSM/NSM:XXXX)
View: lateral pelvis

Abstract

Teraterpeton hrynewichorum is an unusual archosauromorph reptile from the Upper Triassic (Carnian) Evangeline Member of the Wolfville Formation in Nova Scotia (Canada). Its long snout has transversely broad, cusped ‘molariform’ teeth posteriorly and lacks teeth anteriorly. The temporal region of the cranium is ‘euryapsid’ with large upper and closed lower temporal fenestrae. A previously undescribed specimen referable to Teraterpeton includes a nearly complete pelvic girdle and both hind limbs. The ilium has a long, dorsoventrally deep anterior process similar to that of derived rhynchosaurs. The pelvis has a well-developed thyroid fenestra, a feature shared only by Tanystropheidae among Archosauromorpha. Metatarsal V is proximodistally short, resembling the condition in Tanystropheidae. The pedal unguals of Teraterpeton are strongly flattened mediolaterally, dorsoventrally deep and weakly curved, much like the manual unguals. We performed a phylogenetic analysis of a matrix comprising 61 taxa of Permo-Triassic diapsid reptiles and 337 characters, which supports the position of Teraterpeton as the sister-taxon of Trilophosaurus þ Spinosuchus. In the current phylogeny, parsimony-based character optimization of the aforementioned character-states in Teraterpeton indicate that all were acquired independently from other saurian lineages. The unusual combination of postcranial features in Teraterpeton underscores the critical importance of comprehensive taxon sampling for understanding the mode of character change among Triassic diapsid reptiles and careful apomorphy-based identifications to faunal analyses.


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Article DOI: DOI: 10.1080/14772019.2018.1551249

Project DOI: 10.7934/P3203, http://dx.doi.org/10.7934/P3203
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 61 Taxa
  • 2 Specimens
  • 337 Characters
Total size of project's media files: 13 MB

Download Project SDD File
Total scored cells: 12936
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 337
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 721
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:311/26
Currently Viewing:
MorphoBank Project 3203


    Members

    member name taxa specimens media chars character
    media
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    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
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    Adam Pritchard
    Project Administrator
    Last logged in 02/04/19
    61213370012936
    (12397, 0, 539)
    000


    Taxonomic Overview for Matrix 'M25470' (61 Taxa)

    taxon unscored
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    scored
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    "-" cellscell images labels on
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    [1] † Petrolacosaurus kansasensis
    Last Modified in 06/03/18
    2629128902200none
    [2] † Orovenator mayorum
    Last Modified in 06/03/18
    24191910500none
    [3] † Hypuronector limnaios
    Last Modified in 06/03/18
    26073730400none
    [4] † Vallesaurus cenensis
    Last Modified in 06/03/18
    2081221220700none
    [5] † Megalancosaurus preonensis
    Last Modified in 06/03/18
    1871471470300none
    [6] † Drepanosaurus unguicaudatus
    Last Modified in 06/03/18
    23795950500none
    [7] † Dolabrosaurus aquatilis
    Last Modified in 06/03/18
    29044440300none
    [8] † Avicranium renestoi
    Last Modified in 06/03/18
    227979701300none
    [9] † Coelurosauravus elivensis
    Last Modified in 06/03/18
    1701581580900none
    [10] † Weigeltisaurus jaekeli
    Last Modified in 06/03/18
    2101231230400none
    [11] † Rautiania spp.
    Last Modified in 06/03/18
    24783830700none
    [12] † Claudiosaurus germaini
    Last Modified in 06/03/18
    772552530700none
    [13] † Acerosodontosaurus piveteaui
    Last Modified in 06/03/18
    2221091090600none
    [14] † Hovasaurus boulei
    Last Modified in 06/03/18
    1272072050500none
    [15] † Thadeosaurus colcanapi
    Last Modified in 06/03/18
    1811491490700none
    [16] † TropidostomaZone_Youngina
    Last Modified in 06/03/18
    1332012010300none
    [17] † Youngina capensis
    Last Modified in 06/03/18
    3828528501400none
    [18] † Huehuecuetzpalli mixtecus
    Last Modified in 06/03/18
    1501851850200none
    [19] Shinisaurus crocodilurus
    Last Modified in 06/03/18
    1929629502300none
    [20] Iguana iguana
    Last Modified in 06/03/18
    1630930901200none
    [21] Uromastyx acanthinura
    Last Modified in 06/03/18
    2729429401600none
    [22] † Gephyrosaurus bridensis
    Last Modified in 06/03/18
    7924124101700none
    [23] † Diphydontosaurus avonis
    Last Modified in 06/03/18
    1142262210200none
    [24] † Planocephalosaurus robinsonae
    Last Modified in 06/03/18
    1092292260200none
    [25] † Sphenotitan leyesi
    Last Modified in 06/03/18
    25577760600none
    [26] † Clevosaurus brasiliensis
    Last Modified in 06/03/18
    2101271250200none
    [27] † Clevosaurus hudsoni
    Last Modified in 06/03/18
    2230029701800none
    [28] Sphenodon punctatum
    Last Modified in 06/03/18
    1230730502000none
    [29] † Colobops noviportensis
    Last Modified in 06/03/18
    28652500100none
    [30] † Protorosaurus speneri
    Last Modified in 06/03/18
    7225425401100none
    [31] † Macrocnemus bassanii
    Last Modified in 06/03/18
    882432420700none
    [32] † Macrocnemus fuyuanensis
    Last Modified in 06/03/18
    1142182170600none
    [33] † Amotosaurus rotfeldensis
    Last Modified in 06/03/18
    1571771760400none
    [34] † Tanystropheus longobardicus
    Last Modified in 06/03/18
    283053000900none
    [35] † Ozimek volans
    Last Modified in 06/03/18
    1861511510000none
    [36] Langobardisaurus pandoflii concatenation
    Last Modified in 06/03/18
    1551791790300none
    [37] † Tanytrachelos ahynis
    Last Modified in 06/03/18
    1391931930500none
    [38] † Mesosuchus browni
    Last Modified in 06/03/18
    2730129901100none
    [39] † Howesia browni
    Last Modified in 06/03/18
    2111221210500none
    [40] † Eohyosaurus wolvaardti
    Last Modified in 06/03/18
    27068670000none
    [41] † Rhynchosaurus articeps
    Last Modified in 06/03/18
    6425625501800none
    [42] † Teyumbaita sulcognathus
    Last Modified in 06/03/18
    12119919901700none
    [43] † Hyperodapedon gordoni
    Last Modified in 06/03/18
    9023022901800none
    [44] † Boreopricea funerea
    Last Modified in 06/03/18
    1242072070600none
    [45] † Teraterpeton hrynewichorum full codings
    Last Modified in 06/03/18
    1322042020300none
    [46] † Trilophosaurus buettneri
    Last Modified in 06/03/18
    1330530402000none
    [47] † Spinosuchus caseanus (combined)
    Last Modified in 06/03/18
    1441951920100none
    [48] † Icarosaurus siefkeri
    Last Modified in 06/03/18
    1621721720300none
    [49] † Kuehneosaurus latus
    Last Modified in 06/03/18
    592802740400none
    [50] † Pamelaria dolichotrachela
    Last Modified in 06/03/18
    832512470700none
    [51] † Shringasaurus indicus
    Last Modified in 06/03/18
    1411961940200none
    [52] † Azendohsaurus madagaskarensis
    Last Modified in 06/03/18
    1531131101100none
    [53] † Azendohsaurus laaroussi
    Last Modified in 06/03/18
    29540400200none
    [54] † Prolacerta broomi
    Last Modified in 06/03/18
    1931330801000none
    [55] † Proterosuchus fergusi
    Last Modified in 06/03/18
    402932900700none
    [56] † Proterosuchus yuani
    Last Modified in 06/03/18
    912392390700none
    [57] † Erythrosuchus africanus
    Last Modified in 06/03/18
    522772770800none
    [58] † Euparkeria capensis
    Last Modified in 06/03/18
    652642630900none
    [59] † Batrachotomus kupferzellensis
    Last Modified in 06/03/18
    4927327101600none
    [60] † Coelophysis bauri
    Last Modified in 06/03/18
    5925024603200none
    [61] † Plateosaurus engelhardti
    Last Modified in 06/03/18
    4925825603200none


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views220
    Project overview42
    Media views34Media search (31 views); M584407 (3 views);
    Matrix views21Matrix landing page (14 views); Archosauromorph phylogeny (7 views);
    Taxon list75
    Views for media list19
    Specimen list24
    Bibliography5




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project4
    Matrix downloads1Archosauromorph phylogeny (1 download);
    Project downloads3