Project 2368: O. W. M. Rauhut, T. Hübner, K.-P. Lanser. 2016. A new megalosaurid theropod dinosaur from the late Middle Jurassic (Callovian) of north-western Germany: implications for theropod evolution and faunal turnover in the Jurassic. Palaeontologia electronica. 19 (2.29):1-65.
Specimen: † Wiehenvenator albati (WMN/P:27504)

Abstract

Fragmentary remains of a large, robustly built theropod dinosaur were recovered from the marine middle Callovian Ornatenton Formation of north-eastern Northrhine-Westphalia, Germany. The specimen includes a premaxilla, maxilla, lacrimal, postorbital, dentary, several caudal vertebrae, ribs, fibulae, astragalus, and partial calcaneum. It is here described as a new species of megalosauroid, Wiehenvenator albati n. gen. n. sp., diagnosed by a strongly reduced maxillary antorbital fossa on the base of the ascending process of the maxilla, a very short anterior ramus of the lacrimal with an additional pneumatic depression anteroventral to the lacrimal fenestra, a transversely expanded orbital facet in the postorbital, and a laterally flexed proximal end of the ascending process of the astragalus. Phylogenetic analysis recovers Wiehenvenator as a megalosaurine megalosaurid, sister taxon to the Late Jurassic genus Torvosaurus. It thus adds to the considerable diversity of megalosauroids in the Middle Jurassic. A time-calibrated phylogeny of theropods indicates a rapid radiation of averostran theropods between the Toarcian and the Bathonian. This radiation was probably triggered by the Pliensbachian-Toarcian extinction event, which might have been more important for theropod evolution than the Triassic-Jurassic extinction. The fossil record indicates a faunal turnover from megalosauroid dominated Middle Jurassic to allosauroid / coelurosaur dominated Late Jurassic faunas. However, differences in the Middle and Late Jurassic theropod fossil records both in respect to geographic distribution of localities, as well as sampled environments make this inference problematic, at least in respect to allosauroids. An analysis of environmental preferences of allosauroids and megalosauroids indicates that the former preferred inland environments, whereas the latter are more common in nearshore environments.


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Project DOI: 10.7934/P2368, http://dx.doi.org/10.7934/P2368
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 63 Taxa
  • 1 Specimen
  • 351 Characters
Total size of project's media files: 33 MB

Download Project SDD File
Total scored cells: 9707
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 351
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 912
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:351/0
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MorphoBank Project 2368


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Oliver Rauhut
    Project Administrator
    Last logged in 09/23/16
    6311351009707
    (9674, 0, 33)
    000


    Taxonomic Overview for Matrix 'M23784' (62 Taxa)

    taxon unscored
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    scored
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    "-" cellscell images labels on
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    [1] † Eoraptor
    Last Modified in 09/23/16
    6428528502001
    [2] † Herrerasaurus
    Last Modified in 09/23/16
    4230730702001
    [3] † Acrocanthosaurus
    Last Modified in 09/23/16
    3132132000001
    [4] † Aerosteon
    Last Modified in 09/23/16
    24310810701001
    [5] † Afrovenator
    Last Modified in 09/23/16
    14021321001001
    [6] † Allosaurus
    Last Modified in 09/23/16
    235234801001
    [7] † Angaturama
    Last Modified in 09/23/16
    330212100001
    [8] † Australovenator
    Last Modified in 09/23/16
    269828200001
    [9] † Baryonyx
    Last Modified in 09/23/16
    13621821500001
    [10] † Carcharodontosaurus
    Last Modified in 09/23/16
    21213913900001
    [11] † Ceratosaurus
    Last Modified in 09/23/16
    2932332002001
    [12] † Chilantaisaurus
    Last Modified in 09/23/16
    311404000001
    [13] † Chuandongocoelurus
    Last Modified in 09/23/16
    293585800001
    [14] † Coelophysis bauri
    Last Modified in 09/23/16
    5030430001001
    [15] † Coelophysis rhodesiensis
    Last Modified in 09/23/16
    2133232901001
    [16] † Compsognathus
    Last Modified in 09/23/16
    17118118000001
    [17] † Concavenator
    Last Modified in 09/23/16
    23212311900001
    [18] † Condorraptor
    Last Modified in 09/23/16
    264878700001
    [19] † Cryolophosaurus
    Last Modified in 09/23/16
    19415615601001
    [20] † CV00214
    Last Modified in 09/23/16
    25110510000001
    [21] † Sinosaurus
    Last Modified in 09/23/16
    13821521201001
    [22] † Dilophosaurus
    Last Modified in 09/23/16
    3331931602001
    [23] † Dubreuillosaurus
    Last Modified in 09/23/16
    22612412401001
    [24] † Duriavenator
    Last Modified in 09/23/16
    311404000001
    [25] † Elaphrosaurus
    Last Modified in 09/23/16
    22612712500001
    [26] † Eocarcharia
    Last Modified in 09/23/16
    309424200001
    [27] † Eustreptospondylus
    Last Modified in 09/23/16
    12222822702001
    [28] † Fukuiraptor
    Last Modified in 09/23/16
    272807900001
    [29] † Giganotosaurus
    Last Modified in 09/23/16
    14820420300001
    [30] † Guanlong
    Last Modified in 09/23/16
    10724724400001
    [31] † Irritator
    Last Modified in 09/23/16
    262888702001
    [32] † Lourinhanosaurus
    Last Modified in 09/23/16
    277747400001
    [33] † Magnosaurus
    Last Modified in 09/23/16
    311414000001
    [34] † Majungasaurus
    Last Modified in 09/23/16
    5529529501001
    [35] † Mapusaurus
    Last Modified in 09/23/16
    16319118800001
    [36] † Marshosaurus
    Last Modified in 09/23/16
    16418818700001
    [37] † Masiakasaurus
    Last Modified in 09/23/16
    10724324202001
    [38] † Megalosaurus
    Last Modified in 09/23/16
    19216015900001
    [39] † Megaraptor
    Last Modified in 09/23/16
    297545400001
    [40] † Metriacanthosaurus
    Last Modified in 09/23/16
    276757500001
    [41] † Monolophosaurus
    Last Modified in 09/23/16
    15120220000001
    [42] † Neovenator
    Last Modified in 09/23/16
    15819319300001
    [43] † Ornitholestes
    Last Modified in 09/23/16
    13222021801001
    [44] † Piatnitzkysaurus
    Last Modified in 09/23/16
    14420720700001
    [45] † Piveteausaurus
    Last Modified in 09/23/16
    324282700001
    [46] † Poekilopleuron
    Last Modified in 09/23/16
    305464600001
    [47] † Proceratosaurus
    Last Modified in 09/23/16
    259929101001
    [48] † Saurophaganax
    Last Modified in 09/23/16
    277747301001
    [49] † Shaochilong
    Last Modified in 09/23/16
    307444400001
    [50] † Shidaisaurus
    Last Modified in 09/23/16
    286666500001
    [51] † Siamotyrannus
    Last Modified in 09/23/16
    299535200001
    [52] † Sinraptor dongi
    Last Modified in 09/23/16
    4131031000001
    [53] † Spinosaurus
    Last Modified in 09/23/16
    269818002001
    [54] † Streptospondylus
    Last Modified in 09/23/16
    301515000001
    [55] † Suchomimus
    Last Modified in 09/23/16
    15419819601001
    [56] † S zigongensis
    Last Modified in 09/23/16
    21613713500001
    [57] † Torvosaurus
    Last Modified in 09/23/16
    9326125602001
    [58] † Tyrannotitan
    Last Modified in 09/23/16
    281707000001
    [59] † Xuanhanosaurus
    Last Modified in 09/23/16
    304474700001
    [60] † Yangchuano hepingensis
    Last Modified in 09/23/16
    12223022900001
    [61] † Yangchuano shangyuensis
    Last Modified in 09/23/16
    15020320100001
    [62] † Wiehenvenator
    Last Modified in 09/23/16
    278717102001


    Project views

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    Total project views10900
    Project overview1496
    Matrix views960Matrix landing page (881 views); Wiehenvenator matrix (79 views);
    Media views1853Media search (1661 views); M409282 (192 views);
    Taxon list5308
    Specimen list849
    Bibliography434




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project135
    Project downloads119
    Matrix downloads16Wiehenvenator matrix (16 downloads);