Morphobank

Project 3934: M. B. von Baczko, J. B. Desojo, D. Ponce. 2019. Postcranial anatomy and osteoderm histology of Riojasuchus tenuisceps and a phylogenetic update on Ornithosuchidae (Archosauria, Pseudosuchia). Journal of Vertebrate Paleontology. 39 (5):e1693396.

Specimen: † Riojasuchus tenuisceps (Instituto Miguel Lillo, Tucumán/PVL:3827)
View: fossil skull

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Abstract

Ornithosuchidae is a group of terrestrial quadrupedal pseudosuchian archosaurs from the Late Triassic of South America and Europe. Riojasuchus tenuisceps is arguably one of the best representative species of this clade because it comprises very well-preserved three-dimensional, almost complete skeletons. However, R. tenuisceps was originally described 50 years ago and compared then only with Ornithosuchus woodwardi and their affinities were discussed in detail. Here, we provide a detailed description of the postcranial skeleton of R. tenuisceps, which exhibits several remarkable features within pseudosuchians. When a wide spectrum of pseudosuchian archosaurs are considered, the alleged character that linked ornithosuchids with dinosaurs resulted in convergences and some were registered in other pseudosuchian groups as well. Riojasuchus tenuisceps also provided crucial information about the ‘crocodile-reversed’ tarsus, which is a unique feature of ornithosuchids, but it is not completely preserved in O. woodwardi and it is unknown in Venaticosuchus rusconii. In addition, the first histological analysis of cervical and dorsal osteoderms of R. tenuisceps was carried out as well, in order to test the utility of these structures as skeletochronological tools. Finally, the phylogenetic context of Ornithosuchidae is discussed based on the latest phylogenetic studies, which show a close affinity with Erpetosuchidae.

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Article DOI: 10.1080/02724634.2019.1693396

Project DOI: 10.7934/P3934, http://dx.doi.org/10.7934/P3934

This project contains	Matrices
1 Media 1 Matrix 2 Documents 85 Taxa 1 Specimen 418 Characters Total size of project's media files: 3.76M Download Project SDD File	Total scored cells: 20418 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 418 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 908 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:0/418

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MorphoBank Project 3934

Creation Date:
18 February 2021
Publication Date:
18 February 2021
Project views: 12239
Media downloads: 1
Matrix downloads: 4

Authors' Institutions

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Museo de La Plata

Universidad Nacional de Rio Negro

Museo 'Carlos Ameghino'

Members

MorphoBank Curator
Project Administrator

418

20418
(20418, 0, 0)

Belen von Baczko
Full membership

0
(0, 0, 0)

Taxonomic Overview for Matrix 'M27240' (85 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Mesosuchus browni Last Modified in 02/18/21	87	331	331	0	0	0	0	2
[2] † Prolacerta broomi Last Modified in 02/18/21	59	359	359	0	0	0	0	2
[3] † Proterosuchus fergusi Last Modified in 02/18/21	51	367	367	0	0	0	0	2
[4] † Erythrosuchus africanus Last Modified in 02/18/21	52	366	366	0	0	0	0	2
[5] † Vancleavea campi Last Modified in 02/18/21	131	287	287	0	0	0	0	2
[6] † Chanaresuchus bonapartei Last Modified in 02/18/21	54	365	364	0	0	0	0	2
[7] † Tropidosuchus romeri Last Modified in 02/18/21	103	316	315	0	0	0	0	2
[8] † Euparkeria capensis Last Modified in 02/18/21	19	400	399	0	0	0	0	2
[9] † Parasuchus hislopi Last Modified in 02/18/21	66	352	352	0	0	0	0	2
[10] † Smilosuchus gregorii Last Modified in 02/18/21	76	342	342	0	0	0	0	2
[11] † Pseudopalatus pristinus Last Modified in 02/18/21	33	385	385	0	0	0	0	2
[12] † Gracilisuchus stipanicicorum Last Modified in 02/18/21	107	316	311	0	0	0	0	2
[13] † Turfanosuchus dabanensis Last Modified in 02/18/21	147	272	271	0	0	0	0	2
[14] † Ornithosuchus longidens Last Modified in 02/18/21	140	278	278	0	0	0	0	2
[15] † Riojasuchus tenuisceps Last Modified in 02/18/21	61	357	357	0	0	0	0	2
[16] † Revueltosaurus callenderi Last Modified in 02/18/21	46	372	372	0	0	0	0	2
[17] † Aetosaurus ferratus Last Modified in 02/18/21	150	269	268	0	0	0	0	2
[18] † Stagonolepis robertsoni Last Modified in 02/18/21	100	318	318	0	0	0	0	2
[19] † Longosuchus meadei Last Modified in 02/18/21	70	348	348	0	0	0	0	2
[20] † Ticinosuchus ferox Last Modified in 02/18/21	209	209	209	0	0	0	0	2
[21] † Qianosuchus mixtus Last Modified in 02/18/21	132	286	286	0	0	0	0	2
[22] † Xilousuchus sapingensis Last Modified in 02/18/21	298	120	120	0	0	0	0	2
[23] † Arizonasaurus babbitti Last Modified in 02/18/21	161	257	257	0	0	0	0	2
[24] † Ctenosauriscus Last Modified in 02/18/21	402	16	16	0	0	0	0	2
[25] † Hypselorhachis mirabilis Last Modified in 02/18/21	413	5	5	0	0	0	0	2
[26] † Waldshut taxon Last Modified in 02/18/21	400	18	18	0	0	0	0	2
[27] † Poposaurus gracilis holotype Last Modified in 02/18/21	380	38	38	0	0	0	0	2
[28] † Poposaurus gracilis yale Last Modified in 02/18/21	205	214	213	0	0	0	0	2
[29] † Lotosaurus adentus Last Modified in 02/18/21	104	314	314	0	0	0	0	2
[30] † Sillosuchus longicervix Last Modified in 02/18/21	339	79	79	0	0	0	0	2
[31] † Effigia okeeffeae Last Modified in 02/18/21	100	318	318	0	0	0	0	2
[32] † Shuvosaurus inexpectatus Last Modified in 02/18/21	110	308	308	0	0	0	0	2
[33] † Combined prestosuchus Last Modified in 02/18/21	57	361	361	0	0	0	0	2
[34] † Saurosuchus galilei Last Modified in 02/18/21	103	315	315	0	0	0	0	2
[35] † Batrachotomus kuperferzellensis Last Modified in 02/18/21	64	354	354	0	0	0	0	2
[36] † Fasolasuchus tenax Last Modified in 02/18/21	254	164	164	0	0	0	0	2
[37] † Rauisuchus triradentes Last Modified in 02/18/21	282	136	136	0	0	0	0	2
[38] † Polanosuchus silesiacus Last Modified in 02/18/21	298	120	120	0	0	0	0	2
[39] † Postosuchus kirkpatricki Last Modified in 02/18/21	77	341	341	0	0	0	0	2
[40] † Postosuchus alisonae Last Modified in 02/18/21	248	170	170	0	0	0	0	2
[41] † CM 73372 Last Modified in 02/18/21	257	161	161	0	0	0	0	2
[42] † Hesperosuchus agilis Last Modified in 02/18/21	200	218	218	0	0	0	0	2
[43] † Dromicosuchus grallator Last Modified in 02/18/21	146	272	272	0	0	0	0	2
[44] † Hesperosuchus agalis Last Modified in 02/18/21	128	290	290	0	0	0	0	2
[45] † Dibothrosuchus elaphros Last Modified in 02/18/21	199	219	219	0	0	0	0	2
[46] † Terrestrisuchus gracilis Last Modified in 02/18/21	98	320	320	0	0	0	0	2
[47] † Sphenosuchus acutus Last Modified in 02/18/21	199	219	219	0	0	0	0	2
[48] † Litargosuchus leptorhynchus Last Modified in 02/18/21	224	194	194	0	0	0	0	2
[49] † Kayentasuchus walkeri Last Modified in 02/18/21	310	108	108	0	0	0	0	2
[50] † Orthosuchus stormbergi Last Modified in 02/18/21	94	324	324	0	0	0	0	2
[51] † Alligator mississippiensis Last Modified in 02/18/21	47	373	371	0	0	0	0	2
[52] † Protosuchus haughtoni Last Modified in 02/18/21	255	163	163	0	0	0	0	2
[53] † Protosuchus richarsoni Last Modified in 02/18/21	55	363	363	0	0	0	0	2
[54] † Eudimorphodon ranzii Last Modified in 02/18/21	224	194	194	0	0	0	0	2
[55] † Dimorphodon macronyx Last Modified in 02/18/21	214	204	204	0	0	0	0	2
[56] † Lagerpeton chanarensis Last Modified in 02/18/21	285	133	133	0	0	0	0	2
[57] † Dromomeron gregorii Last Modified in 02/18/21	376	42	42	0	0	0	0	2
[58] † Dromomeron romeri Last Modified in 02/18/21	357	61	61	0	0	0	0	2
[59] † Marasuchus lilloensis Last Modified in 02/18/21	213	205	205	0	0	0	0	2
[60] † Asilisaurus kongwe Last Modified in 02/18/21	242	176	176	0	0	0	0	2
[61] † Eucoelophysis baldwini Last Modified in 02/18/21	392	26	26	0	0	0	0	2
[62] † Sacisaurus agudoensis Last Modified in 02/18/21	327	91	91	0	0	0	0	2
[63] † Lewisuchus pseudolagosuchus Last Modified in 02/18/21	191	227	227	0	0	0	0	2
[64] † Eocursor parvus Last Modified in 02/18/21	278	140	140	0	0	0	0	2
[65] † Silesaurus opolensis Last Modified in 02/18/21	82	337	336	0	0	0	0	2
[66] † Pisanosaurus mertii Last Modified in 02/18/21	330	88	88	0	0	0	0	2
[67] † Heterodontosaurus tucki Last Modified in 02/18/21	74	346	344	0	0	0	0	2
[68] † Lesothosaurus dianosticus Last Modified in 02/18/21	89	330	329	0	0	0	0	2
[69] † Scutellosaurus lawleri Last Modified in 02/18/21	251	168	167	0	0	0	0	2
[70] † Herrerasaurus ischigualastensis Last Modified in 02/18/21	71	347	347	0	0	0	0	2
[71] † Staurikosaurus pricei Last Modified in 02/18/21	302	116	116	0	0	0	0	2
[72] † Eoraptor lunensis Last Modified in 02/18/21	134	285	284	0	0	0	0	2
[73] † Saturnalia tupiniquim Last Modified in 02/18/21	224	194	194	0	0	0	0	2
[74] † Plateosaurus engelhardti Last Modified in 02/18/21	32	386	386	0	0	0	0	2
[75] † Efraasia minor Last Modified in 02/18/21	98	320	320	0	0	0	0	2
[76] † Tawa Last Modified in 02/18/21	72	346	346	0	0	0	0	2
[77] † Coelophysis bauri Last Modified in 02/18/21	54	364	364	0	0	0	0	2
[78] † Dilophosaurus wetherelli Last Modified in 02/18/21	78	340	340	0	0	0	0	2
[79] † Allosaurus fragilis Last Modified in 02/18/21	43	375	375	0	0	0	0	2
[80] † Velociraptor mongoliensis Last Modified in 02/18/21	80	339	338	0	0	0	0	2
[81] † Parringtonia gracilis Last Modified in 02/18/21	378	40	40	0	0	0	0	2
[82] † Erpetosuchus granti Last Modified in 02/18/21	261	157	157	0	0	0	0	2
[83] † Yonghesuchus sangbiensis Last Modified in 02/18/21	327	92	91	0	0	0	0	2
[84] † Venaticosuchus rusconii Last Modified in 02/18/21	348	70	70	0	0	0	0	2
[85] † Pagosvenator candelariensis Last Modified in 02/18/21	306	112	112	0	0	0	0	2

Project views

type	number of views	Individual items viewed (where applicable)
Total project views	12239
Project overview	808
Matrix views	582	Modified Lacerda et al. (2018) paper (85 views); Matrix landing page (497 views);
Media views	1899	Media search (1616 views); M739126 (283 views);
Specimen list	1083
Taxon list	6267
Documents list	533
Bibliography	416
Views for media list	651

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	79
Media downloads	1	M739126 (1 download);
Matrix downloads	4	Modified Lacerda et al. (2018) paper (4 downloads);
Project downloads	74