Morphobank

Project 2776: N. G. Zverkov, V. Fischer, D. Madzia, R. B. J. Benson. 2018. Increased pliosaurid dental disparity across the Jurassic-Cretaceous transition. Palaeontology. 2018:1-22.

Specimen: † Pliosauridae (SOIKM/KP-28988)
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Abstract

Pliosaurid marine reptiles played important roles in marine food chains from the Middle Jurassic to the middle Cretaceous, frequently as apex predators. The evolution of pliosaurids during the later parts of the Early Cretaceous has recently been illuminated by discoveries from Russia (Hauterivian) and Colombia (Barremian). However, knowledge of pliosaurids representing the Jurassic-Cretaceous transition (late Tithonian-Valanginian), is still largely incomplete, especially during the earliest Cretaceous. As such, the effect on pliosaurids of hypothesized faunal turnover during the Jurassic-Cretaceous boundary interval is poorly understood. We report pliosaurid teeth from theupper Volgian (Tithonian, Upper Jurassic) of the Kheta river basin (Eastern Siberia, Russia), to the Berriasian and Valanginian (Lower Cretaceous) of the Volga region (European Russia). These assemblages yielded a series of distinct tooth morphotypes, including the first reports of conical-toothed pliosaurids from the latest Jurassic-earliest Cretaceous.This challenges the hypothesis that only one lineage of pliosaurids crossed the Jurassic-Cretaceous boundary. It appears that conical-toothed pliosaurids co-existed with their trihedral-toothed relatives for at least 25 million years during the latest Jurassic and earliest Cretaceous. In fact, our quantitative analyses indicate that pliosaurids reached their maximal dental disparity during this interval, showing little evidence of turnover associated with the Jurassic-Cretaceous transition. Instead, disparity decreased later in the Early Cretaceous, with the disappearance of trihedral-toothed forms in the Barremian.

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Article DOI: 10.1111/pala.12367

Project DOI: 10.7934/P2776, http://dx.doi.org/10.7934/P2776

This project contains	Matrices
1 Media 1 Matrix 5 Documents 97 Taxa 1 Specimen 270 Characters Total size of project's media files: 1.19M Download Project SDD File	Total scored cells: 12426 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 270 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 894 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:270/0

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MorphoBank Project 2776

Creation Date:
29 October 2017
Publication Date:
30 April 2018
Media downloads: 1
Matrix downloads: 3

Authors' Institutions

University of Oxford

Université de Liège

Polish Academy of Sciences

Lomonosov Moscow State University

Russian Academy of Sciences

Members

Valentin Fischer
Project Administrator

270

12426
(12426, 0, 0)

Taxonomic Overview for Matrix 'M24853' (96 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Yunguisaurus liae Taxon name last Modified on 04/30/18	107	164	163	0	0	0	0	1
[2] † Pistosaurus postcranium Taxon name last Modified on 04/30/18	193	77	77	0	0	0	0	1
[3] † Pistosaurus skull Taxon name last Modified on 04/30/18	187	84	83	0	0	0	0	1
[4] † Augustasaurus hagdorni Taxon name last Modified on 04/30/18	98	172	172	0	0	0	0	1
[5] † Bobosaurus forojuliensis Taxon name last Modified on 04/30/18	211	60	59	0	0	0	0	1
[6] † Macroplata tenuiceps Taxon name last Modified on 04/30/18	103	168	167	0	0	0	0	1
[7] † Anningasaura lymense Taxon name last Modified on 04/30/18	130	140	140	0	0	0	0	1
[8] † Stratesaurus taylori Taxon name last Modified on 04/30/18	93	177	177	0	0	0	0	1
[9] † Avalonnectes arturi Taxon name last Modified on 04/30/18	156	115	114	0	0	0	0	1
[10] † Eurycleidus arcuatus Taxon name last Modified on 04/30/18	171	99	99	0	0	0	0	1
[11] † Meyerasaurus victor Taxon name last Modified on 04/30/18	99	172	171	0	0	0	0	1
[12] † Maresaurus coccai Taxon name last Modified on 04/30/18	175	97	95	0	0	0	0	1
[13] † Borealonectes russelli Taxon name last Modified on 04/30/18	146	127	124	0	0	0	0	1
[14] † Atychodracon megacephalus Taxon name last Modified on 04/30/18	92	178	178	0	0	0	0	1
[15] † Archaeonectrus rostratus Taxon name last Modified on 04/30/18	141	129	129	0	0	0	0	1
[16] † Rhomaleosaurus cramptoni Taxon name last Modified on 04/30/18	97	173	173	0	0	0	0	1
[17] † Rhomaleosaurus zetlandicus Taxon name last Modified on 04/30/18	116	154	154	0	0	0	0	1
[18] † Rhomaleosaurus thorntoni Taxon name last Modified on 04/30/18	135	135	135	0	0	0	0	1
[19] † Thalassiodracon hawkinsii Taxon name last Modified on 04/30/18	23	247	247	0	0	0	0	1
[20] † Hauffiosaurus longirostris Taxon name last Modified on 04/30/18	208	62	62	0	0	0	0	1
[21] † Hauffiosaurus tomistomimus Taxon name last Modified on 04/30/18	89	182	181	0	0	0	0	1
[22] † Hauffiosaurus zanoni Taxon name last Modified on 04/30/18	105	166	165	0	0	0	0	1
[23] † Marmornectes candrewi Taxon name last Modified on 04/30/18	144	126	126	0	0	0	0	1
[24] † Peloneustes philarchus Taxon name last Modified on 04/30/18	22	249	248	0	0	0	0	1
[25] † Simolestes vorax Taxon name last Modified on 04/30/18	81	189	189	0	0	0	0	1
[26] † Pliosaurus funkei Taxon name last Modified on 04/30/18	209	61	61	0	0	0	0	1
[27] † Pliosaurus westburyensis Taxon name last Modified on 04/30/18	145	126	125	0	0	0	0	1
[28] † Pliosaurus carpenteri Taxon name last Modified on 04/30/18	140	131	130	0	0	0	0	1
[29] † Pliosaurus brachydeirus Taxon name last Modified on 04/30/18	179	92	91	0	0	0	0	1
[30] † Pliosaurus macromerus Taxon name last Modified on 04/30/18	197	75	73	0	0	0	0	1
[31] † Pliosaurus brachyspondylus Taxon name last Modified on 04/30/18	201	71	69	0	0	0	0	1
[32] † Pliosaurus cf kevani Taxon name last Modified on 04/30/18	192	80	78	0	0	0	0	1
[33] † Pliosaurus kevani Taxon name last Modified on 04/30/18	159	112	111	0	0	0	0	1
[34] † Gallardosaurus iturraldei Taxon name last Modified on 04/30/18	184	86	86	0	0	0	0	1
[35] † Pliosaurus rossicus Taxon name last Modified on 04/30/18	220	50	50	0	0	0	0	1
[36] † Pliosaurus irgisensis Taxon name last Modified on 04/30/18	216	54	54	0	0	0	0	1
[37] † Pliosaurus andrewsi Taxon name last Modified on 04/30/18	94	177	176	0	0	0	0	1
[38] † Liopleurodon ferox Taxon name last Modified on 04/30/18	60	210	210	0	0	0	0	1
[39] † Kronosaurus queenslandicus Taxon name last Modified on 04/30/18	172	100	98	0	0	0	0	1
[40] † Polyptychodon sp Taxon name last Modified on 04/30/18	251	19	19	0	0	0	0	1
[41] † Megacephalosaurus eulerti Taxon name last Modified on 04/30/18	164	106	106	0	0	0	0	1
[42] † Brachauchenius lucasi Taxon name last Modified on 04/30/18	155	116	115	0	0	0	0	1
[43] † Brachauchenius mna Taxon name last Modified on 04/30/18	148	123	122	0	0	0	0	1
[44] † QM f51291 Taxon name last Modified on 04/30/18	238	33	32	0	0	0	0	1
[45] † Attenborosaurus conybeari Taxon name last Modified on 04/30/18	147	124	123	0	0	0	0	1
[46] † Plesiosaurus dolichodeirus Taxon name last Modified on 04/30/18	36	239	234	0	0	0	0	1
[47] † Eoplesiosaurus antiquior Taxon name last Modified on 04/30/18	193	77	77	0	0	0	0	1
[48] † Eretmosaurus rugosus Taxon name last Modified on 04/30/18	184	89	86	0	0	0	0	1
[49] † Westphaliasaurus simonsensii Taxon name last Modified on 04/30/18	175	95	95	0	0	0	0	1
[50] † Seelyosaurus guilelmiimperatoris Taxon name last Modified on 04/30/18	123	148	147	0	0	0	0	1
[51] † Microcleidus tournemirensis Taxon name last Modified on 04/30/18	81	190	189	0	0	0	0	1
[52] † Microcleidus brachypterygius Taxon name last Modified on 04/30/18	91	179	179	0	0	0	0	1
[53] † Microcleidus homalospondylus Taxon name last Modified on 04/30/18	52	218	218	0	0	0	0	1
[54] † Plesiopterys wildi Taxon name last Modified on 04/30/18	86	184	184	0	0	0	0	1
[55] † Cryptoclidus eurymerus Taxon name last Modified on 04/30/18	21	252	249	0	0	0	0	1
[56] † Tricleidus seeleyi Taxon name last Modified on 04/30/18	73	198	197	0	0	0	0	1
[57] † Muraenosaurus leedsii Taxon name last Modified on 04/30/18	106	165	164	0	0	0	0	1
[58] † Kimmerosaurus langhami Taxon name last Modified on 04/30/18	169	101	101	0	0	0	0	1
[59] † Pantosaurus striatus Taxon name last Modified on 04/30/18	204	67	66	0	0	0	0	1
[60] † Picrocleidus beloclis Taxon name last Modified on 04/30/18	135	136	135	0	0	0	0	1
[61] † Tatenectes laramiensis Taxon name last Modified on 04/30/18	168	104	102	0	0	0	0	1
[62] † Plesiosaurus mansellii Taxon name last Modified on 04/30/18	230	41	40	0	0	0	0	1
[63] † Colymbosaurus trochanterius Taxon name last Modified on 04/30/18	183	87	87	0	0	0	0	1
[64] † Djupedallia engeri Taxon name last Modified on 04/30/18	185	86	85	0	0	0	0	1
[65] † Spitrasaurus spp Taxon name last Modified on 04/30/18	167	105	103	0	0	0	0	1
[66] † Abyssosaurus nataliae Taxon name last Modified on 04/30/18	191	82	79	0	0	0	0	1
[67] † Umoonasaurus demoscyllus Taxon name last Modified on 04/30/18	135	135	135	0	0	0	0	1
[68] † Nichollssaura borealis Taxon name last Modified on 04/30/18	59	212	211	0	0	0	0	1
[69] † Leptocleidus capensis Taxon name last Modified on 04/30/18	141	131	129	0	0	0	0	1
[70] † Leptocleidus superstes Taxon name last Modified on 04/30/18	157	115	113	0	0	0	0	1
[71] † Vectocleidus pastorum Taxon name last Modified on 04/30/18	242	28	28	0	0	0	0	1
[72] † Brancasaurus brancai Taxon name last Modified on 04/30/18	66	205	204	0	0	0	0	1
[73] † Gronausaurus wegneri Taxon name last Modified on 04/30/18	197	73	73	0	0	0	0	1
[74] † Speeton clay plesiosaurian Taxon name last Modified on 04/30/18	171	99	99	0	0	0	0	1
[75] † Wapuskanectes betsynichollsae Taxon name last Modified on 04/30/18	234	37	36	0	0	0	0	1
[76] † Futabasaurus suzukii Taxon name last Modified on 04/30/18	152	120	118	0	0	0	0	1
[77] † Callawayasaurus colombiensis Taxon name last Modified on 04/30/18	85	191	185	0	0	0	0	1
[78] † Eromangasaurus australis Taxon name last Modified on 04/30/18	195	76	75	0	0	0	0	1
[79] † Kaiwhekea katiki Taxon name last Modified on 04/30/18	153	118	117	0	0	0	0	1
[80] † Aristonectes parvidens Taxon name last Modified on 04/30/18	166	105	104	0	0	0	0	1
[81] † Libonectes morgani Taxon name last Modified on 04/30/18	103	167	167	0	0	0	0	1
[82] † Hydrotherosaurus alexandrae Taxon name last Modified on 04/30/18	90	183	180	0	0	0	0	1
[83] † Edgarosaurus muddi Taxon name last Modified on 04/30/18	97	174	173	0	0	0	0	1
[84] † Plesiopleurodon wellesi Taxon name last Modified on 04/30/18	173	102	97	0	0	0	0	1
[85] † Richmond pliosaur Taxon name last Modified on 04/30/18	81	192	189	0	0	0	0	1
[86] † Stenorhynchosaurus munozi Taxon name last Modified on 04/30/18	145	129	125	0	0	0	0	1
[87] † Anguanax zignoi Taxon name last Modified on 04/30/18	233	39	37	0	0	0	0	1
[88] † Makhaira rossica Taxon name last Modified on 04/30/18	254	16	16	0	0	0	0	1
[89] † Luskhan itilensis Taxon name last Modified on 04/30/18	69	209	201	0	0	0	0	1
[90] † Palmulasaurus quadratus Taxon name last Modified on 04/30/18	197	74	73	0	0	0	0	1
[91] † Pahasapasaurus haasi Taxon name last Modified on 04/30/18	167	106	103	0	0	0	0	1
[92] † Polycotylus latipinnis Taxon name last Modified on 04/30/18	44	229	226	0	0	0	0	1
[93] † Thililua longicollis Taxon name last Modified on 04/30/18	200	73	70	0	0	0	0	1
[94] † Trinacromerum bentonianum Taxon name last Modified on 04/30/18	93	178	177	0	0	0	0	1
[95] † Dolichorhynchops osborni Taxon name last Modified on 04/30/18	17	256	253	0	0	0	0	1
[96] † Dolichorhynchops bonneri Taxon name last Modified on 04/30/18	48	223	222	0	0	0	0	1

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	240
Project downloads	218
Document downloads	18	Size data (3 downloads); Ready-to-use dental data (5 downloads); Dental data and features (7 downloads); Taxon ages (2 downloads); R script (1 download);
Matrix downloads	3	Phylogenetic matrix (3 downloads);
Media downloads	1	M462865 (1 download);