Project 2399: Juan Martín Leardi,Lucas E. Fiorelli,Zulma Gasparini. 2015. Redescription and reevaluation of the taxonomical status of Microsuchus schilleri (Crocodyliformes: Mesoeucrocodylia) from the Upper Cretaceous of Neuquen, Argentina. Cretaceous Research. 52:153-166.
Specimen: † Notosuchus (unvouchered)

Abstract

Fragmentary remains of Microsuchus schilleri (Crocodyliformes: Mesoeucrocodylia) from the Bajo de La Carpa Formation (Santonian, Late Creteceous) of northern Patagonia, Argentina, are described and reevaluated taxonomically. The type specimen is an articulated individual with hindlimb and axial remains. Microsuchus has several traits that allow to recognize it as a valid taxon (the presence of bulge lateral to the prezygapophyses of the second sacral vertebra; elongated posterior zeugopodia; proximal caudal centra with triangular cross section). Microsuchus was originally assigned as a goniopholidid based on the platycely of its vertebral centra, a character that is widely distributed among fossil crocodyliforms. A phylogenetical analysis using an expanded data matrix focusing on postcranial data was performed in which Microsuchus and another long-limbed crocodyliform from the same location, Neuquensuchus, were included.Microsuchus is depicted in a politomy as a basal mesoeucrocodylian, with its position as a neosuchian or notosuchian supported by a single synapomorphy on the different mostparsimonious trees. Additionaly, Neuquensuchus is well nested among notosuchians, in contrast to previous hypothesis. These findings further increase the crocodyliform diversity of the Bajo de la Carpa Formation and emphasize the relevance of its fauna in studies of the diversification of mesoeucrocodylians and notosuchians. Furthermore, the occurrence of both Microsuchus and Neuquensuchus gives evidence of a basal stock of mesoeucrocodylians with elongated limbs that was not previously reported for northern Patagonia.


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Article DOI: http://dx.doi.org/10.1016/j.cretres.2014.09.007

Project DOI: 10.7934/P2399, http://dx.doi.org/10.7934/P2399
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 111 Taxa
  • 1 Specimen
  • 439 Characters


Download Project SDD File
Total scored cells: 22255
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 439
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 974
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:396/43
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MorphoBank Project 2399


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    Adam Laing
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    Last logged in 04/02/16
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    Maureen O'Leary
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    Alan Turner
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    Taxonomic Overview for Matrix 'M23869' (111 Taxa)

    taxon unscored
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    [1] † Gracilisuchus
    Last Modified in 04/02/16
    22621321300003
    [2] † Terrestrisuchus
    Last Modified in 04/02/16
    27716316200003
    [3] † Dibothrosuchus
    Last Modified in 04/02/16
    15928028000003
    [4] † Protosuchus richardsoni
    Last Modified in 04/02/16
    10733933200003
    [5] † Protosuchus haughtoni
    Last Modified in 04/02/16
    19624624300003
    [6] † Hemiprotosuchus
    Last Modified in 04/02/16
    31012912900003
    [7] † Orthosuchus
    Last Modified in 04/02/16
    14829229100003
    [8] † Edentosuchus
    Last Modified in 04/02/16
    31113612800003
    [9] † Kayenta form
    Last Modified in 04/02/16
    27616616300003
    [10] † Zaraasuchus
    Last Modified in 04/02/16
    348959100003
    [11] † Gobiosuchus
    Last Modified in 04/02/16
    18126425800003
    [12] † Sichuanosuchus shuhanensis
    Last Modified in 04/02/16
    23620820300003
    [13] † Sichuanosuchus huidongensis
    Last Modified in 04/02/16
    27416716500003
    [14] † Shantungosuchus
    Last Modified in 04/02/16
    33710410200003
    [15] † Zosuchus
    Last Modified in 04/02/16
    23021220900003
    [16] † Hsisosuchus chowi
    Last Modified in 04/02/16
    23520720400003
    [17] † Hsisosuchus chungkingensis
    Last Modified in 04/02/16
    23221220700003
    [18] † Fruitachampsa
    Last Modified in 04/02/16
    24519619400003
    [19] † Uruguaysuchus
    Last Modified in 04/02/16
    19825124100003
    [20] † Candidodon
    Last Modified in 04/02/16
    22122121800003
    [21] † Libycosuchus
    Last Modified in 04/02/16
    27916416000003
    [22] † Simosuchus
    Last Modified in 04/02/16
    7237636700003
    [23] † Malawisuchus
    Last Modified in 04/02/16
    19225424700003
    [24] † Pakasuchus
    Last Modified in 04/02/16
    20723223200003
    [25] † Chimaerasuchus
    Last Modified in 04/02/16
    30513713400003
    [26] † Notosuchus
    Last Modified in 04/02/16
    5039638900003
    [27] † Comahuesuchus
    Last Modified in 04/02/16
    26218617700003
    [28] † Mariliasuchus
    Last Modified in 04/02/16
    8336735600003
    [29] † Labidiosuchus
    Last Modified in 04/02/16
    416232300003
    [30] † Caryonosuchus
    Last Modified in 04/02/16
    387525200003
    [31] † Sphagesaurus huenei
    Last Modified in 04/02/16
    26218017700003
    [32] † Armadillosuchus
    Last Modified in 04/02/16
    26118117800003
    [33] † Caipirasuchus stenognathus
    Last Modified in 04/02/16
    15228928700003
    [34] † Caipirasuchus montealtensis
    Last Modified in 04/02/16
    21522722400003
    [35] † Caipirasuchus paulistanus
    Last Modified in 04/02/16
    20623923300003
    [36] † Yacarerani
    Last Modified in 04/02/16
    5838238100003
    [37] † Adamantinasuchus
    Last Modified in 04/02/16
    31612512300003
    [38] † Coringasuchus
    Last Modified in 04/02/16
    4328700003
    [39] † Morrinhosuchus
    Last Modified in 04/02/16
    350928900003
    [40] † Campinasuchus
    Last Modified in 04/02/16
    20523723400003
    [41] † Pissarrachampsa
    Last Modified in 04/02/16
    20923423000003
    [42] † Baurusuchus albertoi
    Last Modified in 04/02/16
    25118918800003
    [43] † Baurusuchus pachecoi
    Last Modified in 04/02/16
    19724624200003
    [44] † Baurusuchus salgadoensis
    Last Modified in 04/02/16
    14030429900003
    [45] † Stratiotosuchus
    Last Modified in 04/02/16
    11233332700003
    [46] † Pehuenchesuchus
    Last Modified in 04/02/16
    417242200003
    [47] † Cynodontosuchus
    Last Modified in 04/02/16
    380615900003
    [48] † Bergisuchus
    Last Modified in 04/02/16
    405343400003
    [49] † Iberosuchus
    Last Modified in 04/02/16
    19525824400003
    [50] † Bretesuchus
    Last Modified in 04/02/16
    30513913400003
    [51] † Barinasuchus
    Last Modified in 04/02/16
    373696600003
    [52] † Sebecus huilensis
    Last Modified in 04/02/16
    419202000003
    [53] † Sebecus icaeorhinus
    Last Modified in 04/02/16
    13831130100003
    [54] † Sebecus querejazus
    Last Modified in 04/02/16
    349939000003
    [55] † Ayllusuchus
    Last Modified in 04/02/16
    388595100003
    [56] † Lorosuchus
    Last Modified in 04/02/16
    24419919500003
    [57] † Lumbrera form
    Last Modified in 04/02/16
    27516716400003
    [58] † Pabhwehshi
    Last Modified in 04/02/16
    380625900003
    [59] † Araripesuchus gomesii
    Last Modified in 04/02/16
    5339638600003
    [60] † Araripesuchus patagonicus
    Last Modified in 04/02/16
    18126625800003
    [61] † Araripesuchus buitreraensis
    Last Modified in 04/02/16
    30514313400003
    [62] † Araripesuchus wegeneri
    Last Modified in 04/02/16
    17027126900003
    [63] † Araripesuchus tsangatsangana
    Last Modified in 04/02/16
    11433032500003
    [64] † Anatosuchus
    Last Modified in 04/02/16
    18426025500003
    [65] † Montealtosuchus
    Last Modified in 04/02/16
    12132631800003
    [66] † Uberabasuchus
    Last Modified in 04/02/16
    22621621300003
    [67] † Lomasuchus
    Last Modified in 04/02/16
    17726426200003
    [68] † Gasparinisuchus
    Last Modified in 04/02/16
    33411110500003
    [69] † Hamadasuchus
    Last Modified in 04/02/16
    19225324700003
    [70] † Mahajangasuchus
    Last Modified in 04/02/16
    9935034000003
    [71] † Kaprosuchus
    Last Modified in 04/02/16
    20923523000003
    [72] † Stolokrosuchus
    Last Modified in 04/02/16
    20124623800003
    [73] † Theriosuchus
    Last Modified in 04/02/16
    20224523700003
    [74] † Alligatorium
    Last Modified in 04/02/16
    370696900003
    [75] † Goniopholis simus
    Last Modified in 04/02/16
    19824324100003
    [76] † Goniopholis stovalli
    Last Modified in 04/02/16
    24719219200003
    [77] † Eutretauranosuchus
    Last Modified in 04/02/16
    25019118900003
    [78] † Calsoyasuchus
    Last Modified in 04/02/16
    29414614500003
    [79] † Sunosuchus
    Last Modified in 04/02/16
    32811111100003
    [80] † Shamosuchus
    Last Modified in 04/02/16
    18825925100003
    [81] † Bernissartia
    Last Modified in 04/02/16
    26517417400003
    [82] † Hylaeochampsa
    Last Modified in 04/02/16
    358838100003
    [83] † Glen rose form
    Last Modified in 04/02/16
    25718218200003
    [84] † Borealosuchus
    Last Modified in 04/02/16
    19724324200003
    [85] † Pristichampsus vorax
    Last Modified in 04/02/16
    22022121900003
    [86] † Eothoracosaurus mississippiensi
    Last Modified in 04/02/16
    25319318600003
    [87] Gavialis
    Last Modified in 04/02/16
    11233132700003
    [88] † Leidyosuchus canadensis
    Last Modified in 04/02/16
    21123022800003
    [89] † Asiatosuchus germanicus
    Last Modified in 04/02/16
    23720320200003
    [90] Crocodylus
    Last Modified in 04/02/16
    4739539200003
    [91] † Diplocynodon hantoniensis
    Last Modified in 04/02/16
    19124924800003
    [92] Alligator
    Last Modified in 04/02/16
    4240039700003
    [93] † Pelagosaurus
    Last Modified in 04/02/16
    16128327800003
    [94] † Steneosaurus bollensis
    Last Modified in 04/02/16
    13631230300003
    [95] † Metriorhynchus superciliosus
    Last Modified in 04/02/16
    19225024700003
    [96] † Metriorhynchus casamequelai
    Last Modified in 04/02/16
    32011911900003
    [97] † Cricosaurus araucanensis
    Last Modified in 04/02/16
    19724524200003
    [98] † Cricosaurus suevicus
    Last Modified in 04/02/16
    30313813600003
    [99] † Dakosaurus maximus
    Last Modified in 04/02/16
    359808000003
    [100] † Dakosaurus andiniensis
    Last Modified in 04/02/16
    26118017800003
    [101] † Rhabdognathus
    Last Modified in 04/02/16
    25418818500003
    [102] † Sokotosuchus
    Last Modified in 04/02/16
    374656500003
    [103] † Dyrosaurus
    Last Modified in 04/02/16
    26217817700003
    [104] † Hyposaurus
    Last Modified in 04/02/16
    33810210100003
    [105] † Pholidosaurus
    Last Modified in 04/02/16
    30014013900003
    [106] † Sarcosuchus
    Last Modified in 04/02/16
    15728928200003
    [107] † Terminonaris
    Last Modified in 04/02/16
    22022421900003
    [108] † Rugosuchus
    Last Modified in 04/02/16
    27816516100003
    [109] † Argochampsa
    Last Modified in 04/02/16
    29015114900003
    [110] † Microsuchus
    Last Modified in 04/02/16
    410292900003
    [111] † Neuquensuchus
    Last Modified in 04/02/16
    402403700003


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