Project 4034: Zaher H., Pol D., Navarro B. A., Delcourt R. & Carvalho A. B. 2020. An Early Cretaceous theropod dinosaur from Brazil sheds light on the cranial evolution of the Abelisauridae. Comptes Rendus Palevol. 19 (6):101-115.
Specimen: † Spectrovenator ragei (MSZP/PV:833)
View: lateral view of skull

Abstract

Abelisaurid theropods dominated the predator role across Gondwana during the Late Cretaceous. They are characterized by highly reduced forelimbs and one of the most specialized cranial morpholo- gies among carnivorous dinosaurs, exemplified by a broad skull, short rostrum, high occipital region, and highly kinetic intramandibular joint, suggestive of a specialized feeding strategy. Late Cretaceous abelisaurids are known from some remarkably complete taxa with well-preserved skulls. However, little is known about the pattern of character transformation that led to their highly modified condition because there are no well-preserved abelisaurids before the Late Cretaceous. Here we report a basal abelisaurid from the Early Cretaceous of Brazil that preserves a complete skull and reveals an early stage in the cranial evolution of the group. It lacks the specialized temporal and mandibular features characteristic of derived abelisaurids, including the kinetic intramandibular joint and knob- like dorsal projection of the parietals.


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Article DOI: 10.5852/cr-palevol2020v19a6

Project DOI: 10.7934/P4034, http://dx.doi.org/10.7934/P4034
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 38 Taxa
  • 1 Specimen
  • 218 Characters
Total size of project's media files: 934.16k

Download Project SDD File
Total scored cells: 2975
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 218
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 522
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:216/2
Currently Viewing:
MorphoBank Project 4034
  • Creation Date:
    15 June 2021
  • Publication Date:
    15 June 2021
  • Project views: 1583

    Authors' Institutions

    • Muséum national d'histoire naturelle, Paris (Natural History Museum, Paris)

    • Museo Paleontológico Egidio Feruglio

    • Universidade Federal do Rio De Janeiro (UFRJ)

    • Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

    • Universidade de Sao Paulo (USP, University of Sao Paulo)

    • Universidade Estadual de Campinas (UNICAMP)



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Diego Pol
    Project Administrator
    3811218002975
    (2969, 0, 6)
    000


    Taxonomic Overview for Matrix 'M27525' (37 Taxa)

    taxon unscored
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    NPA
    cells
    "-" cellscell images labels on
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    [1] Herrerasaurus
    Last Modified in 06/15/21
    421521301001
    [2] Syntarsus
    Last Modified in 06/15/21
    121821700001
    [3] Dilophosaurus
    Last Modified in 06/15/21
    3618418200001
    [4] Allosaurus
    Last Modified in 06/15/21
    021821701001
    [5] Berberosaurus
    Last Modified in 06/15/21
    190312800001
    [6] Spinostropheus
    Last Modified in 06/15/21
    194252400001
    [7] Genyodectes
    Last Modified in 06/15/21
    205141300001
    [8] Ceratosaurus
    Last Modified in 06/15/21
    921220900001
    [9] Deltadromeus
    Last Modified in 06/15/21
    187313100001
    [10] Limusaurus
    Last Modified in 06/15/21
    11110910502001
    [11] Elaphrosaurus
    Last Modified in 06/15/21
    122979600001
    [12] Laevisuchus
    Last Modified in 06/15/21
    203161500001
    [13] Velocisaurus
    Last Modified in 06/15/21
    204141400001
    [14] Noasaurus
    Last Modified in 06/15/21
    181383700001
    [15] Masiakasaurus
    Last Modified in 06/15/21
    5416516400001
    [16] Eoabelisaurus
    Last Modified in 06/15/21
    7514914201001
    [17] Rahiolisaurus
    Last Modified in 06/15/21
    161575601001
    [18] Spectrovenator
    Last Modified in 06/15/21
    9113012700001
    [19] Rugops
    Last Modified in 06/15/21
    176424200001
    [20] Kryptops
    Last Modified in 06/15/21
    204141400001
    [21] Abelisaurus
    Last Modified in 06/15/21
    155636300001
    [22] Ilokelesia
    Last Modified in 06/15/21
    171474700001
    [23] Ekrixinatosaurus
    Last Modified in 06/15/21
    150696800001
    [24] Skorpiovenator
    Last Modified in 06/15/21
    140797800001
    [25] Aucasaurus
    Last Modified in 06/15/21
    142777600001
    [26] Carnotaurus
    Last Modified in 06/15/21
    2918918900001
    [27] Genusaurus
    Last Modified in 06/15/21
    196232200001
    [28] Indosaurus
    Last Modified in 06/15/21
    206121200001
    [29] Majungasaurus
    Last Modified in 06/15/21
    1320720500001
    [30] Rajasaurus
    Last Modified in 06/15/21
    158606000001
    [31] Arcovenator
    Last Modified in 06/15/21
    179393900001
    [32] Dahalokely
    Last Modified in 06/15/21
    190302800001
    [33] Camarillasaurus
    Last Modified in 06/15/21
    203151500001
    [34] Pycnonemosaurus
    Last Modified in 06/15/21
    206121200001
    [35] CCG 20011
    Last Modified in 06/15/21
    195242300001
    [36] MNN tig6
    Last Modified in 06/15/21
    183363500001
    [37] USNM 8415
    Last Modified in 06/15/21
    2108800001


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views1583
    Project overview139
    Matrix views98Matrix landing page (76 views); Phylogenetic dataset published in Zaher et al. (2020) description of Spectrovenator ragei (22 views);
    Taxon list801
    Media views268Media search (228 views); M784195 (40 views);
    Bibliography54
    Views for media list81
    Specimen list141
    Documents list1




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project29
    Project downloads29