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
Project views: 18309
Media downloads: 1
Matrix downloads: 2

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 Last Modified in 04/30/18	107	164	163	0	0	0	0	1
[2] † Pistosaurus postcranium Last Modified in 04/30/18	193	77	77	0	0	0	0	1
[3] † Pistosaurus skull Last Modified in 04/30/18	187	84	83	0	0	0	0	1
[4] † Augustasaurus hagdorni Last Modified in 04/30/18	98	172	172	0	0	0	0	1
[5] † Bobosaurus forojuliensis Last Modified in 04/30/18	211	60	59	0	0	0	0	1
[6] † Macroplata tenuiceps Last Modified in 04/30/18	103	168	167	0	0	0	0	1
[7] † Anningasaura lymense Last Modified in 04/30/18	130	140	140	0	0	0	0	1
[8] † Stratesaurus taylori Last Modified in 04/30/18	93	177	177	0	0	0	0	1
[9] † Avalonnectes arturi Last Modified in 04/30/18	156	115	114	0	0	0	0	1
[10] † Eurycleidus arcuatus Last Modified in 04/30/18	171	99	99	0	0	0	0	1
[11] † Meyerasaurus victor Last Modified in 04/30/18	99	172	171	0	0	0	0	1
[12] † Maresaurus coccai Last Modified in 04/30/18	175	97	95	0	0	0	0	1
[13] † Borealonectes russelli Last Modified in 04/30/18	146	127	124	0	0	0	0	1
[14] † Atychodracon megacephalus Last Modified in 04/30/18	92	178	178	0	0	0	0	1
[15] † Archaeonectrus rostratus Last Modified in 04/30/18	141	129	129	0	0	0	0	1
[16] † Rhomaleosaurus cramptoni Last Modified in 04/30/18	97	173	173	0	0	0	0	1
[17] † Rhomaleosaurus zetlandicus Last Modified in 04/30/18	116	154	154	0	0	0	0	1
[18] † Rhomaleosaurus thorntoni Last Modified in 04/30/18	135	135	135	0	0	0	0	1
[19] † Thalassiodracon hawkinsii Last Modified in 04/30/18	23	247	247	0	0	0	0	1
[20] † Hauffiosaurus longirostris Last Modified in 04/30/18	208	62	62	0	0	0	0	1
[21] † Hauffiosaurus tomistomimus Last Modified in 04/30/18	89	182	181	0	0	0	0	1
[22] † Hauffiosaurus zanoni Last Modified in 04/30/18	105	166	165	0	0	0	0	1
[23] † Marmornectes candrewi Last Modified in 04/30/18	144	126	126	0	0	0	0	1
[24] † Peloneustes philarchus Last Modified in 04/30/18	22	249	248	0	0	0	0	1
[25] † Simolestes vorax Last Modified in 04/30/18	81	189	189	0	0	0	0	1
[26] † Pliosaurus funkei Last Modified in 04/30/18	209	61	61	0	0	0	0	1
[27] † Pliosaurus westburyensis Last Modified in 04/30/18	145	126	125	0	0	0	0	1
[28] † Pliosaurus carpenteri Last Modified in 04/30/18	140	131	130	0	0	0	0	1
[29] † Pliosaurus brachydeirus Last Modified in 04/30/18	179	92	91	0	0	0	0	1
[30] † Pliosaurus macromerus Last Modified in 04/30/18	197	75	73	0	0	0	0	1
[31] † Pliosaurus brachyspondylus Last Modified in 04/30/18	201	71	69	0	0	0	0	1
[32] † Pliosaurus cf kevani Last Modified in 04/30/18	192	80	78	0	0	0	0	1
[33] † Pliosaurus kevani Last Modified in 04/30/18	159	112	111	0	0	0	0	1
[34] † Gallardosaurus iturraldei Last Modified in 04/30/18	184	86	86	0	0	0	0	1
[35] † Pliosaurus rossicus Last Modified in 04/30/18	220	50	50	0	0	0	0	1
[36] † Pliosaurus irgisensis Last Modified in 04/30/18	216	54	54	0	0	0	0	1
[37] † Pliosaurus andrewsi Last Modified in 04/30/18	94	177	176	0	0	0	0	1
[38] † Liopleurodon ferox Last Modified in 04/30/18	60	210	210	0	0	0	0	1
[39] † Kronosaurus queenslandicus Last Modified in 04/30/18	172	100	98	0	0	0	0	1
[40] † Polyptychodon sp Last Modified in 04/30/18	251	19	19	0	0	0	0	1
[41] † Megacephalosaurus eulerti Last Modified in 04/30/18	164	106	106	0	0	0	0	1
[42] † Brachauchenius lucasi Last Modified in 04/30/18	155	116	115	0	0	0	0	1
[43] † Brachauchenius mna Last Modified in 04/30/18	148	123	122	0	0	0	0	1
[44] † QM f51291 Last Modified in 04/30/18	238	33	32	0	0	0	0	1
[45] † Attenborosaurus conybeari Last Modified in 04/30/18	147	124	123	0	0	0	0	1
[46] † Plesiosaurus dolichodeirus Last Modified in 04/30/18	36	239	234	0	0	0	0	1
[47] † Eoplesiosaurus antiquior Last Modified in 04/30/18	193	77	77	0	0	0	0	1
[48] † Eretmosaurus rugosus Last Modified in 04/30/18	184	89	86	0	0	0	0	1
[49] † Westphaliasaurus simonsensii Last Modified in 04/30/18	175	95	95	0	0	0	0	1
[50] † Seelyosaurus guilelmiimperatoris Last Modified in 04/30/18	123	148	147	0	0	0	0	1
[51] † Microcleidus tournemirensis Last Modified in 04/30/18	81	190	189	0	0	0	0	1
[52] † Microcleidus brachypterygius Last Modified in 04/30/18	91	179	179	0	0	0	0	1
[53] † Microcleidus homalospondylus Last Modified in 04/30/18	52	218	218	0	0	0	0	1
[54] † Plesiopterys wildi Last Modified in 04/30/18	86	184	184	0	0	0	0	1
[55] † Cryptoclidus eurymerus Last Modified in 04/30/18	21	252	249	0	0	0	0	1
[56] † Tricleidus seeleyi Last Modified in 04/30/18	73	198	197	0	0	0	0	1
[57] † Muraenosaurus leedsii Last Modified in 04/30/18	106	165	164	0	0	0	0	1
[58] † Kimmerosaurus langhami Last Modified in 04/30/18	169	101	101	0	0	0	0	1
[59] † Pantosaurus striatus Last Modified in 04/30/18	204	67	66	0	0	0	0	1
[60] † Picrocleidus beloclis Last Modified in 04/30/18	135	136	135	0	0	0	0	1
[61] † Tatenectes laramiensis Last Modified in 04/30/18	168	104	102	0	0	0	0	1
[62] † Plesiosaurus mansellii Last Modified in 04/30/18	230	41	40	0	0	0	0	1
[63] † Colymbosaurus trochanterius Last Modified in 04/30/18	183	87	87	0	0	0	0	1
[64] † Djupedallia engeri Last Modified in 04/30/18	185	86	85	0	0	0	0	1
[65] † Spitrasaurus spp Last Modified in 04/30/18	167	105	103	0	0	0	0	1
[66] † Abyssosaurus nataliae Last Modified in 04/30/18	191	82	79	0	0	0	0	1
[67] † Umoonasaurus demoscyllus Last Modified in 04/30/18	135	135	135	0	0	0	0	1
[68] † Nichollssaura borealis Last Modified in 04/30/18	59	212	211	0	0	0	0	1
[69] † Leptocleidus capensis Last Modified in 04/30/18	141	131	129	0	0	0	0	1
[70] † Leptocleidus superstes Last Modified in 04/30/18	157	115	113	0	0	0	0	1
[71] † Vectocleidus pastorum Last Modified in 04/30/18	242	28	28	0	0	0	0	1
[72] † Brancasaurus brancai Last Modified in 04/30/18	66	205	204	0	0	0	0	1
[73] † Gronausaurus wegneri Last Modified in 04/30/18	197	73	73	0	0	0	0	1
[74] † Speeton clay plesiosaurian Last Modified in 04/30/18	171	99	99	0	0	0	0	1
[75] † Wapuskanectes betsynichollsae Last Modified in 04/30/18	234	37	36	0	0	0	0	1
[76] † Futabasaurus suzukii Last Modified in 04/30/18	152	120	118	0	0	0	0	1
[77] † Callawayasaurus colombiensis Last Modified in 04/30/18	85	191	185	0	0	0	0	1
[78] † Eromangasaurus australis Last Modified in 04/30/18	195	76	75	0	0	0	0	1
[79] † Kaiwhekea katiki Last Modified in 04/30/18	153	118	117	0	0	0	0	1
[80] † Aristonectes parvidens Last Modified in 04/30/18	166	105	104	0	0	0	0	1
[81] † Libonectes morgani Last Modified in 04/30/18	103	167	167	0	0	0	0	1
[82] † Hydrotherosaurus alexandrae Last Modified in 04/30/18	90	183	180	0	0	0	0	1
[83] † Edgarosaurus muddi Last Modified in 04/30/18	97	174	173	0	0	0	0	1
[84] † Plesiopleurodon wellesi Last Modified in 04/30/18	173	102	97	0	0	0	0	1
[85] † Richmond pliosaur Last Modified in 04/30/18	81	192	189	0	0	0	0	1
[86] † Stenorhynchosaurus munozi Last Modified in 04/30/18	145	129	125	0	0	0	0	1
[87] † Anguanax zignoi Last Modified in 04/30/18	233	39	37	0	0	0	0	1
[88] † Makhaira rossica Last Modified in 04/30/18	254	16	16	0	0	0	0	1
[89] † Luskhan itilensis Last Modified in 04/30/18	69	209	201	0	0	0	0	1
[90] † Palmulasaurus quadratus Last Modified in 04/30/18	197	74	73	0	0	0	0	1
[91] † Pahasapasaurus haasi Last Modified in 04/30/18	167	106	103	0	0	0	0	1
[92] † Polycotylus latipinnis Last Modified in 04/30/18	44	229	226	0	0	0	0	1
[93] † Thililua longicollis Last Modified in 04/30/18	200	73	70	0	0	0	0	1
[94] † Trinacromerum bentonianum Last Modified in 04/30/18	93	178	177	0	0	0	0	1
[95] † Dolichorhynchops osborni Last Modified in 04/30/18	17	256	253	0	0	0	0	1
[96] † Dolichorhynchops bonneri Last Modified in 04/30/18	48	223	222	0	0	0	0	1

Project views

type	number of views	Individual items viewed (where applicable)
Total project views	18309
Project overview	1772
Taxon list	9374
Media views	2605	Media search (2216 views); M462865 (389 views);
Matrix views	1000	Matrix landing page (865 views); Phylogenetic matrix (135 views);
Documents list	730
Bibliography	547
Views for media list	831
Specimen list	1450

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	232
Project downloads	216
Document downloads	13	Size data (2 downloads); Ready-to-use dental data (4 downloads); Dental data and features (6 downloads); Taxon ages (1 download);
Matrix downloads	2	Phylogenetic matrix (2 downloads);
Media downloads	1	M462865 (1 download);