Project 826: O. W. M. Rauhut, M. T. Carrano. 2016. The theropod dinosaur Elaphrosaurus bambergi Janensch, 1920, from the Late Jurassic of Tendaguru, Tanzania. Zoological Journal of the Linnean Society. 178 (3):546-610. (In Press)
Specimen: † Elaphrosaurus bambergi (NHM/R:dd unnumbered)

Abstract

Theropod dinosaurs from the Late Jurassic of Gondwana are still poorly known, with Elaphrosaurus bambergi Janensch, 1920, from the late Kimmeridgian of Tendaguru, Tanzania, being the only taxon represented by more than isolated remains from Africa. Having long been considered a coelurosaurian, more specifically an ornithomimosaur, Elaphrosaurus is currently regarded as a basal ceratosaur. Here we revise the osteology and phylogenetic position of this important taxon. Elaphrosaurus shows many unusual osteological characters, including extremely elongated and constricted cervical vertebrae, an expansive shoulder girdle with strongly modified forelimbs, a relatively small ilium, and elongate hindlimbs with a very small ascending process of the astragalus that is fused to the tibia. We found this taxon to share many derived characters with noasaurids, such as strongly elongate cervical and dorsal vertebrae, low, rectangular neural spines in the mid-caudal vertebrae, presence of only an anterior centrodiapophyseal lamina in anterior caudal vertebrae, presence of a wide, U-shaped notch between the glenoid and the anteroventral hook in the coracoid, a laterally flared postacetabular blade of the ilium, a flat anterior side of the distal tibia, and a reduced shaft of meta-tarsal II. Our analysis placed Elaphrosaurus within a dichotomous Noasauridae as part of a Jurassic subclade, here termed Elaphrosaurinae, that otherwise includes taxa from eastern Asia. These results underscore the long and complex evolutionary history of abelisauroids, which is still only beginning to be understood.


Read the article »

Article DOI: 10.1111/zoj.12425

Project DOI: 10.7934/P826, http://dx.doi.org/10.7934/P826
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 36 Taxa
  • 1 Specimen
  • 218 Characters
Total size of project's media files: 3 MB

Download Project SDD File
Total scored cells: 2773
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: 517
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:217/1
Currently Viewing:
MorphoBank Project 826


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Oliver Rauhut
    Project Administrator
    Last logged in 04/25/16
    36110000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M24670' (33 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] † Herrerasaurus
    Last Modified in 05/02/17
    421521301001
    [2] † Syntarsus
    Last Modified in 05/02/17
    121821700001
    [3] † Dilophosaurus
    Last Modified in 05/02/17
    3618418200001
    [4] † Allosaurus
    Last Modified in 05/02/17
    021821701001
    [5] † Abelisaurus
    Last Modified in 05/02/17
    155636300001
    [6] † Aucasaurus
    Last Modified in 05/02/17
    142777600001
    [7] † Berberosaurus
    Last Modified in 05/02/17
    190312800001
    [8] † Carnotaurus
    Last Modified in 05/02/17
    2918918900001
    [9] † CCG 20011
    Last Modified in 05/02/17
    195242300001
    [10] † Ceratosaurus
    Last Modified in 05/02/17
    921220900001
    [11] † Dahalokely
    Last Modified in 05/02/17
    190292800001
    [12] † Deltadromeus
    Last Modified in 05/02/17
    187313100001
    [13] † Ekrixinatosaurus
    Last Modified in 05/02/17
    150696800001
    [14] † Elaphrosaurus
    Last Modified in 05/02/17
    122979600001
    [15] † Eoabelisaurus
    Last Modified in 05/02/17
    7614714101001
    [16] † Genusaurus
    Last Modified in 05/02/17
    196232200001
    [17] † Genyodectes
    Last Modified in 05/02/17
    205141300001
    [18] † Ilokelesia
    Last Modified in 05/02/17
    171474700001
    [19] † Indosaurus
    Last Modified in 05/02/17
    206121200001
    [20] † Kryptops
    Last Modified in 05/02/17
    204141400001
    [21] † Laevisuchus
    Last Modified in 05/02/17
    203161500001
    [22] † Limusaurus
    Last Modified in 05/02/17
    11110910502001
    [23] † Majungasaurus
    Last Modified in 05/02/17
    1320720500001
    [24] † Masiakasaurus
    Last Modified in 05/02/17
    5416516400001
    [25] † Noasaurus
    Last Modified in 05/02/17
    181383700001
    [26] † Rahiolisaurus
    Last Modified in 05/02/17
    160595800001
    [27] † Rajasaurus
    Last Modified in 05/02/17
    158606000001
    [28] † Rugops
    Last Modified in 05/02/17
    176424200001
    [29] † Skorpiovenator
    Last Modified in 05/02/17
    140797800001
    [30] † MNN tig6
    Last Modified in 05/02/17
    183363500001
    [31] † Spinostropheus type
    Last Modified in 05/02/17
    194252400001
    [32] † Velocisaurus
    Last Modified in 05/02/17
    208101000001
    [33] † USNM 8415
    Last Modified in 05/02/17
    2108800001


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views12207
    Project overview1588
    Media views2559Media search (2217 views); M150986 (342 views);
    Matrix views1075Matrix landing page (1019 views); (48 views); matrix (8 views);
    Specimen list923
    Taxon list5438
    Bibliography624




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project157
    Project downloads128
    Matrix downloads29 (11 downloads); matrix (18 downloads);