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

More images »

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.

Read the article »

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

Currently Viewing:
MorphoBank Project 3934

Creation Date:
18 February 2021
Publication Date:
18 February 2021
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 Taxon name last Modified on 02/18/21	87	331	331	0	0	0	0	2
[2] † Prolacerta broomi Taxon name last Modified on 02/18/21	59	359	359	0	0	0	0	2
[3] † Proterosuchus fergusi Taxon name last Modified on 02/18/21	51	367	367	0	0	0	0	2
[4] † Erythrosuchus africanus Taxon name last Modified on 02/18/21	52	366	366	0	0	0	0	2
[5] † Vancleavea campi Taxon name last Modified on 02/18/21	131	287	287	0	0	0	0	2
[6] † Chanaresuchus bonapartei Taxon name last Modified on 02/18/21	54	365	364	0	0	0	0	2
[7] † Tropidosuchus romeri Taxon name last Modified on 02/18/21	103	316	315	0	0	0	0	2
[8] † Euparkeria capensis Taxon name last Modified on 02/18/21	19	400	399	0	0	0	0	2
[9] † Parasuchus hislopi Taxon name last Modified on 02/18/21	66	352	352	0	0	0	0	2
[10] † Smilosuchus gregorii Taxon name last Modified on 02/18/21	76	342	342	0	0	0	0	2
[11] † Pseudopalatus pristinus Taxon name last Modified on 02/18/21	33	385	385	0	0	0	0	2
[12] † Gracilisuchus stipanicicorum Taxon name last Modified on 02/18/21	107	316	311	0	0	0	0	2
[13] † Turfanosuchus dabanensis Taxon name last Modified on 02/18/21	147	272	271	0	0	0	0	2
[14] † Ornithosuchus longidens Taxon name last Modified on 02/18/21	140	278	278	0	0	0	0	2
[15] † Riojasuchus tenuisceps Taxon name last Modified on 02/18/21	61	357	357	0	0	0	0	2
[16] † Revueltosaurus callenderi Taxon name last Modified on 02/18/21	46	372	372	0	0	0	0	2
[17] † Aetosaurus ferratus Taxon name last Modified on 02/18/21	150	269	268	0	0	0	0	2
[18] † Stagonolepis robertsoni Taxon name last Modified on 02/18/21	100	318	318	0	0	0	0	2
[19] † Longosuchus meadei Taxon name last Modified on 02/18/21	70	348	348	0	0	0	0	2
[20] † Ticinosuchus ferox Taxon name last Modified on 02/18/21	209	209	209	0	0	0	0	2
[21] † Qianosuchus mixtus Taxon name last Modified on 02/18/21	132	286	286	0	0	0	0	2
[22] † Xilousuchus sapingensis Taxon name last Modified on 02/18/21	298	120	120	0	0	0	0	2
[23] † Arizonasaurus babbitti Taxon name last Modified on 02/18/21	161	257	257	0	0	0	0	2
[24] † Ctenosauriscus Taxon name last Modified on 02/18/21	402	16	16	0	0	0	0	2
[25] † Hypselorhachis mirabilis Taxon name last Modified on 02/18/21	413	5	5	0	0	0	0	2
[26] † Waldshut taxon Taxon name last Modified on 02/18/21	400	18	18	0	0	0	0	2
[27] † Poposaurus gracilis holotype Taxon name last Modified on 02/18/21	380	38	38	0	0	0	0	2
[28] † Poposaurus gracilis yale Taxon name last Modified on 02/18/21	205	214	213	0	0	0	0	2
[29] † Lotosaurus adentus Taxon name last Modified on 02/18/21	104	314	314	0	0	0	0	2
[30] † Sillosuchus longicervix Taxon name last Modified on 02/18/21	339	79	79	0	0	0	0	2
[31] † Effigia okeeffeae Taxon name last Modified on 02/18/21	100	318	318	0	0	0	0	2
[32] † Shuvosaurus inexpectatus Taxon name last Modified on 02/18/21	110	308	308	0	0	0	0	2
[33] † Combined prestosuchus Taxon name last Modified on 02/18/21	57	361	361	0	0	0	0	2
[34] † Saurosuchus galilei Taxon name last Modified on 02/18/21	103	315	315	0	0	0	0	2
[35] † Batrachotomus kuperferzellensis Taxon name last Modified on 02/18/21	64	354	354	0	0	0	0	2
[36] † Fasolasuchus tenax Taxon name last Modified on 02/18/21	254	164	164	0	0	0	0	2
[37] † Rauisuchus triradentes Taxon name last Modified on 02/18/21	282	136	136	0	0	0	0	2
[38] † Polanosuchus silesiacus Taxon name last Modified on 02/18/21	298	120	120	0	0	0	0	2
[39] † Postosuchus kirkpatricki Taxon name last Modified on 02/18/21	77	341	341	0	0	0	0	2
[40] † Postosuchus alisonae Taxon name last Modified on 02/18/21	248	170	170	0	0	0	0	2
[41] † CM 73372 Taxon name last Modified on 02/18/21	257	161	161	0	0	0	0	2
[42] † Hesperosuchus agilis Taxon name last Modified on 02/18/21	200	218	218	0	0	0	0	2
[43] † Dromicosuchus grallator Taxon name last Modified on 02/18/21	146	272	272	0	0	0	0	2
[44] † Hesperosuchus agalis Taxon name last Modified on 02/18/21	128	290	290	0	0	0	0	2
[45] † Dibothrosuchus elaphros Taxon name last Modified on 02/18/21	199	219	219	0	0	0	0	2
[46] † Terrestrisuchus gracilis Taxon name last Modified on 02/18/21	98	320	320	0	0	0	0	2
[47] † Sphenosuchus acutus Taxon name last Modified on 02/18/21	199	219	219	0	0	0	0	2
[48] † Litargosuchus leptorhynchus Taxon name last Modified on 02/18/21	224	194	194	0	0	0	0	2
[49] † Kayentasuchus walkeri Taxon name last Modified on 02/18/21	310	108	108	0	0	0	0	2
[50] † Orthosuchus stormbergi Taxon name last Modified on 02/18/21	94	324	324	0	0	0	0	2
[51] † Alligator mississippiensis Taxon name last Modified on 02/18/21	47	373	371	0	0	0	0	2
[52] † Protosuchus haughtoni Taxon name last Modified on 02/18/21	255	163	163	0	0	0	0	2
[53] † Protosuchus richarsoni Taxon name last Modified on 02/18/21	55	363	363	0	0	0	0	2
[54] † Eudimorphodon ranzii Taxon name last Modified on 02/18/21	224	194	194	0	0	0	0	2
[55] † Dimorphodon macronyx Taxon name last Modified on 02/18/21	214	204	204	0	0	0	0	2
[56] † Lagerpeton chanarensis Taxon name last Modified on 02/18/21	285	133	133	0	0	0	0	2
[57] † Dromomeron gregorii Taxon name last Modified on 02/18/21	376	42	42	0	0	0	0	2
[58] † Dromomeron romeri Taxon name last Modified on 02/18/21	357	61	61	0	0	0	0	2
[59] † Marasuchus lilloensis Taxon name last Modified on 02/18/21	213	205	205	0	0	0	0	2
[60] † Asilisaurus kongwe Taxon name last Modified on 02/18/21	242	176	176	0	0	0	0	2
[61] † Eucoelophysis baldwini Taxon name last Modified on 02/18/21	392	26	26	0	0	0	0	2
[62] † Sacisaurus agudoensis Taxon name last Modified on 02/18/21	327	91	91	0	0	0	0	2
[63] † Lewisuchus pseudolagosuchus Taxon name last Modified on 02/18/21	191	227	227	0	0	0	0	2
[64] † Eocursor parvus Taxon name last Modified on 02/18/21	278	140	140	0	0	0	0	2
[65] † Silesaurus opolensis Taxon name last Modified on 02/18/21	82	337	336	0	0	0	0	2
[66] † Pisanosaurus mertii Taxon name last Modified on 02/18/21	330	88	88	0	0	0	0	2
[67] † Heterodontosaurus tucki Taxon name last Modified on 02/18/21	74	346	344	0	0	0	0	2
[68] † Lesothosaurus dianosticus Taxon name last Modified on 02/18/21	89	330	329	0	0	0	0	2
[69] † Scutellosaurus lawleri Taxon name last Modified on 02/18/21	251	168	167	0	0	0	0	2
[70] † Herrerasaurus ischigualastensis Taxon name last Modified on 02/18/21	71	347	347	0	0	0	0	2
[71] † Staurikosaurus pricei Taxon name last Modified on 02/18/21	302	116	116	0	0	0	0	2
[72] † Eoraptor lunensis Taxon name last Modified on 02/18/21	134	285	284	0	0	0	0	2
[73] † Saturnalia tupiniquim Taxon name last Modified on 02/18/21	224	194	194	0	0	0	0	2
[74] † Plateosaurus engelhardti Taxon name last Modified on 02/18/21	32	386	386	0	0	0	0	2
[75] † Efraasia minor Taxon name last Modified on 02/18/21	98	320	320	0	0	0	0	2
[76] † Tawa Taxon name last Modified on 02/18/21	72	346	346	0	0	0	0	2
[77] † Coelophysis bauri Taxon name last Modified on 02/18/21	54	364	364	0	0	0	0	2
[78] † Dilophosaurus wetherelli Taxon name last Modified on 02/18/21	78	340	340	0	0	0	0	2
[79] † Allosaurus fragilis Taxon name last Modified on 02/18/21	43	375	375	0	0	0	0	2
[80] † Velociraptor mongoliensis Taxon name last Modified on 02/18/21	80	339	338	0	0	0	0	2
[81] † Parringtonia gracilis Taxon name last Modified on 02/18/21	378	40	40	0	0	0	0	2
[82] † Erpetosuchus granti Taxon name last Modified on 02/18/21	261	157	157	0	0	0	0	2
[83] † Yonghesuchus sangbiensis Taxon name last Modified on 02/18/21	327	92	91	0	0	0	0	2
[84] † Venaticosuchus rusconii Taxon name last Modified on 02/18/21	348	70	70	0	0	0	0	2
[85] † Pagosvenator candelariensis Taxon name last Modified on 02/18/21	306	112	112	0	0	0	0	2

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