Project 4104: Y. Pochat‐Cottilloux, V. Perrier, R. Amiot, J. E. Martin. 2023. A peirosaurid mandible from the Albian–Cenomanian (Lower Cretaceous) of Algeria and the taxonomic content of Hamadasuchus (Crocodylomorpha, Peirosauridae). Papers in Palaeontology. 9 (2):e1485.
Abstract
Peirosaurids form an extinct clade of terrestrial crocodylomorphs known from the Cretaceous of Africa and South America. Here, we describe a new mandibular ramus attributable to Hamadasuchus cf. rebouli from the Albian/Cenomanian of La Gara Samani (Algeria). We propose an emended diagnosis for this taxon, originally described from a left dentary fragment from the Kem Kem group of Morocco and discuss the assignation of the specimens currently referred to it. Using ontogenetic series of extant crocodylians, we show that several mandibular characters commonly used to differentiate between close taxa instead record intraspecific or ontogenetic variability. On the other hand, reliable mandibular characters allow us to propose that the current taxonomic content of Hamadasuchus rebouli should be reduced to three specimens, pending future description of relatable cranial remains that will confirm or not this hypothesis. Finally, we demonstrate the importance of mandibular characters in phylogenies, by recovering the new specimen from La Gara Samani as closely related to North African peirosaurids on the basis of a data matrix designed solely on mandibular characters.Read the article »
Article DOI: 10.1002/spp2.1485
Project DOI: 10.7934/P4104, http://dx.doi.org/10.7934/P4104
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 2726 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 92 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 218 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:83/9 |
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MorphoBank Project 4104
MorphoBank Project 4104
- Creation Date:
11 October 2021 - Publication Date:
08 March 2023 - Project views: 4454
- Matrix downloads: 5
Authors' Institutions
- Centre National de la Recherche Scientifique (CNRS)
- University Claude Bernard Lyon
- Université de Lyon (University of Lyon)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Yohan Pochat-Cottilloux Project Administrator | 65 | 1 | 1 | 92 | 0 | 0 | 2726 (2661, 0, 65) | 0 | 0 | 0 | ||||
Romain Amiot Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Jeremy Martin Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Vincent Perrier Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M27688' (65 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Adamantinasuchus navae Last Modified in 10/11/21 | 64 | 28 | 28 | 0 | 0 | 0 | 0 | 4 |
[2] † Anatosuchus minor Last Modified in 10/11/21 | 33 | 59 | 59 | 0 | 0 | 0 | 0 | 4 |
[3] † Antaeusuchus taouzensis Last Modified in 03/04/22 | 52 | 38 | 38 | 0 | 2 | 0 | 0 | 4 |
[4] † Aphaurosuchus escharafacies Last Modified in 10/15/21 | 20 | 70 | 70 | 0 | 2 | 0 | 0 | 4 |
[5] † Aplestosuchus sordidus Last Modified in 10/11/21 | 61 | 31 | 31 | 0 | 0 | 0 | 0 | 4 |
[6] † Araripesuchus buitreraensis Last Modified in 10/11/21 | 37 | 56 | 53 | 0 | 2 | 0 | 0 | 4 |
[7] † Araripesuchus gomesii Last Modified in 10/11/21 | 37 | 56 | 55 | 0 | 0 | 0 | 0 | 4 |
[8] † Araripesuchus patagonicus Last Modified in 10/11/21 | 45 | 48 | 47 | 0 | 0 | 0 | 0 | 4 |
[9] † Araripesuchus wegeneri Last Modified in 10/11/21 | 74 | 17 | 17 | 0 | 1 | 0 | 0 | 4 |
[10] † Armadillosuchus arrudai Last Modified in 11/03/21 | 84 | 9 | 8 | 0 | 0 | 0 | 0 | 4 |
[11] † Barcinosuchus gradilis Last Modified in 10/11/21 | 73 | 20 | 19 | 0 | 0 | 0 | 0 | 4 |
[12] † Barinasuchus arveloi Last Modified in 10/11/21 | 74 | 18 | 18 | 0 | 0 | 0 | 0 | 4 |
[13] † Barrosasuchus neuquenianus Last Modified in 10/15/21 | 25 | 65 | 65 | 0 | 2 | 0 | 0 | 4 |
[14] † Baurusuchus albertoi Last Modified in 03/04/22 | 51 | 41 | 41 | 0 | 0 | 0 | 0 | 4 |
[15] † Baurusuchus pachecoi Last Modified in 10/11/21 | 15 | 75 | 75 | 0 | 2 | 0 | 0 | 4 |
[16] † Baurusuchus salgadoensis Last Modified in 10/11/21 | 26 | 66 | 66 | 0 | 0 | 0 | 0 | 4 |
[17] † Bayomesasuchus hernandezi Last Modified in 10/15/21 | 65 | 28 | 26 | 0 | 1 | 0 | 0 | 4 |
[18] † Bergisuchus dietrichberg Last Modified in 10/11/21 | 73 | 19 | 19 | 0 | 0 | 0 | 0 | 4 |
[19] † Bretesuchus bonapartei Last Modified in 10/11/21 | 46 | 48 | 46 | 0 | 0 | 0 | 0 | 4 |
[20] † Caipirasuchus attenboroughi Last Modified in 10/15/21 | 54 | 38 | 37 | 0 | 1 | 0 | 0 | 4 |
[21] † Caipirasuchus montealtensis Last Modified in 10/11/21 | 42 | 48 | 48 | 0 | 2 | 0 | 0 | 4 |
[22] † Caipirasuchus paulistanus Last Modified in 10/11/21 | 26 | 65 | 64 | 0 | 2 | 0 | 0 | 4 |
[23] † Campinasuchus dinizi Last Modified in 10/11/21 | 37 | 55 | 54 | 0 | 1 | 0 | 0 | 4 |
[24] † Candidodon itapecuruense Last Modified in 10/11/21 | 71 | 22 | 21 | 0 | 0 | 0 | 0 | 4 |
[25] † Chimaerasuchus paradoxus Last Modified in 10/11/21 | 76 | 17 | 16 | 0 | 0 | 0 | 0 | 4 |
[26] † Colhuehuapisuchus lunai Last Modified in 10/15/21 | 67 | 23 | 23 | 0 | 2 | 0 | 0 | 4 |
[27] † Comahuesuchus brachybuccalis Last Modified in 10/11/21 | 57 | 34 | 33 | 0 | 2 | 0 | 0 | 4 |
[28] † Cynodontosuchus rothi Last Modified in 10/11/21 | 76 | 16 | 16 | 0 | 0 | 0 | 0 | 4 |
[29] † Dibothrosuchus elaphros Last Modified in 12/07/21 | 35 | 57 | 57 | 0 | 0 | 0 | 0 | 4 |
[30] † Doratodon carcharidens Last Modified in 01/05/22 | 58 | 33 | 32 | 0 | 2 | 0 | 0 | 4 |
[31] † Eremosuchus elkoholicus Last Modified in 10/15/21 | 72 | 20 | 19 | 0 | 1 | 0 | 0 | 4 |
[32] † Gasparinisuchus peirosauroides Last Modified in 10/11/21 | 57 | 33 | 33 | 0 | 2 | 0 | 0 | 4 |
[33] † Gondwanasuchus scabrosus Last Modified in 10/11/21 | 56 | 36 | 36 | 0 | 0 | 0 | 0 | 4 |
[34] † Hamadasuchus rebouli Last Modified in 10/11/21 | 79 | 14 | 12 | 0 | 1 | 0 | 0 | 4 |
[35] † Hamadasuchus rebouli Last Modified in 10/11/21 | 65 | 26 | 25 | 0 | 2 | 0 | 0 | 4 |
[36] † Iberosuchus Last Modified in 01/05/22 | 65 | 26 | 26 | 0 | 1 | 0 | 0 | 4 |
[37] † Itasuchus jesuinoi Last Modified in 01/05/22 | 60 | 32 | 31 | 0 | 1 | 0 | 0 | 4 |
[38] † Kaprosuchus saharicus Last Modified in 10/11/21 | 31 | 63 | 61 | 0 | 0 | 0 | 0 | 4 |
[39] † Kinesuchus overoi Last Modified in 12/03/21 | 59 | 32 | 31 | 0 | 2 | 0 | 0 | 4 |
[40] † Labidiosuchus amicum Last Modified in 10/11/21 | 62 | 28 | 28 | 0 | 2 | 0 | 0 | 4 |
[41] † Lavocatchampsa sigogneaurussellae Last Modified in 10/11/21 | 56 | 35 | 34 | 0 | 2 | 0 | 0 | 4 |
[42] † Libycosuchus brevirostris Last Modified in 10/11/21 | 50 | 43 | 42 | 0 | 0 | 0 | 0 | 4 |
[43] † Lomasuchus palpebrosus Last Modified in 10/11/21 | 59 | 32 | 32 | 0 | 1 | 0 | 0 | 4 |
[44] † Lorosuchus nodosus Last Modified in 10/11/21 | 52 | 40 | 40 | 0 | 0 | 0 | 0 | 4 |
[45] † Mahanjangasuchus insignis Last Modified in 10/11/21 | 33 | 61 | 59 | 0 | 0 | 0 | 0 | 4 |
[46] † Mariliasuchus amarali Last Modified in 10/11/21 | 13 | 77 | 77 | 0 | 2 | 0 | 0 | 4 |
[47] † Miadanasuchus oblita Last Modified in 10/11/21 | 57 | 33 | 33 | 0 | 2 | 0 | 0 | 4 |
[48] † Montealtosuchus arrudacamposi Last Modified in 10/11/21 | 14 | 76 | 76 | 0 | 2 | 0 | 0 | 4 |
[49] † Morrinhosuchus luziae Last Modified in 10/11/21 | 47 | 45 | 43 | 0 | 2 | 0 | 0 | 4 |
[50] † Notosuchus terrestris Last Modified in 10/11/21 | 20 | 71 | 70 | 0 | 2 | 0 | 0 | 4 |
[51] † Pabweshi pakistanensis Last Modified in 10/11/21 | 75 | 17 | 16 | 0 | 1 | 0 | 0 | 4 |
[52] † Pakasuchus kapilimai Last Modified in 10/11/21 | 47 | 45 | 45 | 0 | 0 | 0 | 0 | 4 |
[53] † Patagosuchus anielensis Last Modified in 10/15/21 | 66 | 24 | 24 | 0 | 2 | 0 | 0 | 4 |
[54] † Pehuenchesuchus enderi Last Modified in 10/11/21 | 66 | 26 | 25 | 0 | 1 | 0 | 0 | 4 |
[55] † Pepesuchus deiseae Last Modified in 03/04/22 | 60 | 31 | 30 | 0 | 2 | 0 | 0 | 4 |
[56] † Pissarrachampsa sera Last Modified in 10/11/21 | 66 | 26 | 26 | 0 | 0 | 0 | 0 | 4 |
[57] † MNHN SAM 136 Last Modified in 03/03/23 | 27 | 66 | 63 | 0 | 2 | 0 | 0 | 4 |
[58] † Sebecus ayrampu Last Modified in 11/02/21 | 68 | 22 | 22 | 0 | 2 | 0 | 0 | 4 |
[59] † Sebecus icaeorhinus Last Modified in 10/11/21 | 45 | 50 | 47 | 0 | 0 | 0 | 0 | 4 |
[60] † Simosuchus clarki Last Modified in 10/11/21 | 13 | 80 | 77 | 0 | 2 | 0 | 0 | 4 |
[61] † Stolokrosuchus lapparenti Last Modified in 10/11/21 | 66 | 26 | 26 | 0 | 0 | 0 | 0 | 4 |
[62] † Stratiotosuchus maxhechti Last Modified in 10/11/21 | 67 | 26 | 25 | 0 | 0 | 0 | 0 | 4 |
[63] † Uberabasuchus terrificus Last Modified in 10/11/21 | 33 | 59 | 59 | 0 | 0 | 0 | 0 | 4 |
[64] † Uruguaysuchus aznarezi Last Modified in 10/11/21 | 24 | 66 | 66 | 0 | 2 | 0 | 0 | 4 |
[65] † Yacarerani boliviensis Last Modified in 10/11/21 | 16 | 74 | 74 | 0 | 2 | 0 | 0 | 4 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 4454 | |
Project overview | 411 | |
Taxon list | 1861 | |
Media views | 756 | Media search (643 views); M851799 (113 views); |
Matrix views | 505 | Matrix landing page (196 views); Mandibular characters (308 views); Dipsocoromorpha_matrix (1 view); |
Bibliography | 135 | |
Views for media list | 398 | |
Specimen list | 386 | |
Documents list | 2 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 8 | |
Matrix downloads | 5 | Mandibular characters (5 downloads); |
Project downloads | 3 |