Project 4862: S. W. Salisbury, R. E. Molnar, E. Frey, P. M. Willis. 2006. The origin of modern crocodyliforms: new evidence from the Cretaceous of Australia. Proceedings of the Royal Society B: Biological Sciences. 273 (1600):2439-2448.
Abstract
While the crocodyliform lineage extends back over 200 million years (Myr) to the Late Triassic, modern forms-members of Eusuchia-do not appear until the Cretaceous. Eusuchia includes the crown group Crocodylia, which comprises Crocodyloidea, Alligatoroidea and Gavialoidea. Fossils of non-crocodylian eusuchians are currently rare and, in most instances, fragmentary. Consequently, the transition from Neosuchia to Crocodylia has been one of the most poorly understood areas of crocodyliform evolution. Here we describe a new crocodyliform from the mid-Cretaceous (98-95 Myr ago; Albian-Cenomanian) Winton Formation of Queensland, Australia, as the most primitive member of Eusuchia. The anatomical changes associated with the emergence of this taxon indicate a pivotal shift in the feeding and locomotor behaviour of crocodyliforms-a shift that may be linked to the subsequent rapid diversification of Eusuchia 20 Myr later during the Late Cretaceous and Early Tertiary. While Laurasia (in particular North America) is the most likely ancestral area for Crocodylia, the biogeographic events associated with the origin of Eusuchia are more complex. Although the fossil evidence is limited, it now seems likely that at least part of the early history of Eusuchia transpired in Gondwana.Read the article »
Article DOI: 10.1098/rspb.2006.3613
Project DOI: 10.7934/P4862, http://dx.doi.org/10.7934/P4862
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 5729 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 176 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 407 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:172/4 |
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MorphoBank Project 4862
MorphoBank Project 4862
- Creation Date:
04 September 2023 - Publication Date:
08 April 2024 - Project views: 851
Authors' Institutions
- Museum of Northern Arizona, Flagstaff
- University of Queensland
- University of New South Wales
- Staatliches Museum fuer Naturkunde Karlsruhe
- Carnegie Museum of Natural History
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Shreya Jariwala Project Administrator | 47 | 4 | 4 | 176 | 0 | 0 | 5729 (5724, 0, 5) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29753' (47 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Theriosuchus spp. Last Modified in 03/27/24 | 34 | 142 | 142 | 0 | 0 | 0 | 0 | 1 |
[2] † Goniopholis spp. Last Modified in 03/27/24 | 40 | 136 | 136 | 0 | 0 | 0 | 0 | 1 |
[3] † Bernissartia fagesii Last Modified in 03/27/24 | 61 | 115 | 115 | 0 | 0 | 0 | 0 | 1 |
[4] † Susisuchus anatoceps Last Modified in 03/27/24 | 105 | 71 | 71 | 0 | 0 | 0 | 0 | 1 |
[5] † Hylaeochampsa vectiana Last Modified in 03/27/24 | 110 | 65 | 65 | 0 | 1 | 0 | 0 | 1 |
[6] † Isisfordia duncani Last Modified in 03/27/24 | 96 | 80 | 80 | 0 | 0 | 0 | 0 | 1 |
[7] † Borealosuchus formidabilis Last Modified in 03/27/24 | 22 | 154 | 154 | 0 | 0 | 0 | 0 | 1 |
[8] † Borealosuchus wilsoni Last Modified in 03/27/24 | 57 | 119 | 119 | 0 | 0 | 0 | 0 | 1 |
[9] † Borealosuchus acutidentatus Last Modified in 03/27/24 | 120 | 56 | 56 | 0 | 0 | 0 | 0 | 1 |
[10] † Borealosuchus sternbergii Last Modified in 03/27/24 | 17 | 159 | 159 | 0 | 0 | 0 | 0 | 1 |
[11] † Leidyosuchus canadensis Last Modified in 03/27/24 | 39 | 137 | 137 | 0 | 0 | 0 | 0 | 1 |
[12] † Eothoracosaurus mississippiensis Last Modified in 03/27/24 | 89 | 87 | 87 | 0 | 0 | 0 | 0 | 1 |
[13] † Thecachampsoides minor Last Modified in 03/27/24 | 55 | 121 | 121 | 0 | 0 | 0 | 0 | 1 |
[14] † Siquisiquesuchus venezuelensis Last Modified in 03/27/24 | 115 | 61 | 61 | 0 | 0 | 0 | 0 | 1 |
[15] † Thoracosaurus macrorhynchus Last Modified in 03/27/24 | 63 | 113 | 113 | 0 | 0 | 0 | 0 | 1 |
[16] † Eogavialis africanum Last Modified in 03/27/24 | 65 | 111 | 111 | 0 | 0 | 0 | 0 | 1 |
[17] † Gryposuchus colombianus Last Modified in 03/27/24 | 54 | 122 | 122 | 0 | 0 | 0 | 0 | 1 |
[18] Gavialis gangeticus Last Modified in 03/27/24 | 2 | 174 | 174 | 0 | 0 | 0 | 0 | 1 |
[19] † Pristichampsus spp. Last Modified in 03/27/24 | 49 | 127 | 127 | 0 | 0 | 0 | 0 | 1 |
[20] † Diplocynodon darwinii Last Modified in 03/27/24 | 33 | 143 | 143 | 0 | 0 | 0 | 0 | 1 |
[21] † Baryphracta deponiae Last Modified in 03/27/24 | 91 | 85 | 85 | 0 | 0 | 0 | 0 | 1 |
[22] † Stangerochampsa mccabei Last Modified in 03/27/24 | 42 | 134 | 134 | 0 | 0 | 0 | 0 | 1 |
[23] † Brachychampsa montana Last Modified in 03/27/24 | 27 | 149 | 149 | 0 | 0 | 0 | 0 | 1 |
[24] Alligator mississippiensis Last Modified in 03/27/24 | 0 | 176 | 176 | 0 | 0 | 0 | 0 | 1 |
[25] † Navajosuchus mooki Last Modified in 03/27/24 | 73 | 103 | 103 | 0 | 0 | 0 | 0 | 1 |
[26] † Hassiacosuchus haupti Last Modified in 03/27/24 | 87 | 89 | 89 | 0 | 0 | 0 | 0 | 1 |
[27] Caiman yacare Last Modified in 03/27/24 | 0 | 176 | 176 | 0 | 0 | 0 | 0 | 1 |
[28] Caiman latirostris Last Modified in 03/27/24 | 5 | 171 | 171 | 0 | 0 | 0 | 0 | 1 |
[29] † Melanosuchus niger Last Modified in 03/27/24 | 3 | 173 | 173 | 0 | 0 | 0 | 0 | 1 |
[30] Paleosuchus trigonatus Last Modified in 03/27/24 | 1 | 175 | 175 | 0 | 0 | 0 | 0 | 1 |
[31] Crocodylus cataphractus Last Modified in 03/27/24 | 3 | 173 | 173 | 0 | 0 | 0 | 0 | 1 |
[32] Crocodylus porosus Last Modified in 03/27/24 | 0 | 176 | 176 | 0 | 0 | 0 | 0 | 1 |
[33] Osteolaemus tetraspis Last Modified in 03/27/24 | 3 | 173 | 173 | 0 | 0 | 0 | 0 | 1 |
[34] † Crocodylus robustus Last Modified in 03/27/24 | 43 | 133 | 133 | 0 | 0 | 0 | 0 | 1 |
[35] † Crocodylus megarhinus Last Modified in 03/27/24 | 71 | 105 | 105 | 0 | 0 | 0 | 0 | 1 |
[36] Tomistoma schlegelii Last Modified in 03/27/24 | 0 | 176 | 176 | 0 | 0 | 0 | 0 | 1 |
[37] Tomistoma lusitanica Last Modified in 03/27/24 | 72 | 104 | 104 | 0 | 0 | 0 | 0 | 1 |
[38] † Gavialosuchus americanus Last Modified in 03/27/24 | 48 | 128 | 128 | 0 | 0 | 0 | 0 | 1 |
[39] † Crocodylus spenceri Last Modified in 03/27/24 | 93 | 83 | 83 | 0 | 0 | 0 | 0 | 1 |
[40] † Brachyuranochampsa eversolei Last Modified in 03/27/24 | 108 | 68 | 68 | 0 | 0 | 0 | 0 | 1 |
[41] † Crocodylus acer Last Modified in 03/27/24 | 97 | 79 | 79 | 0 | 0 | 0 | 0 | 1 |
[42] † Crocodylus affinis Last Modified in 03/27/24 | 22 | 154 | 154 | 0 | 0 | 0 | 0 | 1 |
[43] † Asiatosuchus germanicus Last Modified in 03/27/24 | 53 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[44] † Prodiplocynodon langi Last Modified in 03/27/24 | 105 | 71 | 71 | 0 | 0 | 0 | 0 | 1 |
[45] † Australosuchus clarkae Last Modified in 03/27/24 | 66 | 110 | 110 | 0 | 0 | 0 | 0 | 1 |
[46] † Acynodon iberoccitanus Last Modified in 03/27/24 | 87 | 87 | 87 | 0 | 2 | 0 | 0 | 1 |
[47] † Acynodon adriaticus Last Modified in 03/27/24 | 117 | 57 | 57 | 0 | 2 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 851 | |
Matrix views | 55 | Matrix landing page (47 views); Salisbury et al 2006 (8 views); |
Project overview | 52 | |
Bibliography | 22 | |
Media views | 224 | Media search (130 views); M902746 (24 views); M902747 (23 views); M902748 (21 views); M902749 (26 views); |
Taxon list | 278 | |
Views for media list | 40 | |
Specimen list | 146 | |
Documents list | 34 |