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)
View: Close-up crown

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 containsMatrices
  • 1 Media
  • 1 Matrix
  • 5 Documents
  • 97 Taxa
  • 1 Specimen
  • 270 Characters
Total size of project's media files: 2 MB

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


    Members

    member name taxa specimens media chars character
    media
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    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
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    Valentin Fischer
    Project Administrator
    Last logged in 04/30/18
    97112700012426
    (12426, 0, 0)
    000


    Taxonomic Overview for Matrix 'M24853' (96 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
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    NPA
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    "-" cellscell images labels on
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    [1] † Yunguisaurus liae
    Last Modified in 04/30/18
    10716416300001
    [2] † Pistosaurus postcranium
    Last Modified in 04/30/18
    193777700001
    [3] † Pistosaurus skull
    Last Modified in 04/30/18
    187848300001
    [4] † Augustasaurus hagdorni
    Last Modified in 04/30/18
    9817217200001
    [5] † Bobosaurus forojuliensis
    Last Modified in 04/30/18
    211605900001
    [6] † Macroplata tenuiceps
    Last Modified in 04/30/18
    10316816700001
    [7] † Anningasaura lymense
    Last Modified in 04/30/18
    13014014000001
    [8] † Stratesaurus taylori
    Last Modified in 04/30/18
    9317717700001
    [9] † Avalonnectes arturi
    Last Modified in 04/30/18
    15611511400001
    [10] † Eurycleidus arcuatus
    Last Modified in 04/30/18
    171999900001
    [11] † Meyerasaurus victor
    Last Modified in 04/30/18
    9917217100001
    [12] † Maresaurus coccai
    Last Modified in 04/30/18
    175979500001
    [13] † Borealonectes russelli
    Last Modified in 04/30/18
    14612712400001
    [14] † Atychodracon megacephalus
    Last Modified in 04/30/18
    9217817800001
    [15] † Archaeonectrus rostratus
    Last Modified in 04/30/18
    14112912900001
    [16] † Rhomaleosaurus cramptoni
    Last Modified in 04/30/18
    9717317300001
    [17] † Rhomaleosaurus zetlandicus
    Last Modified in 04/30/18
    11615415400001
    [18] † Rhomaleosaurus thorntoni
    Last Modified in 04/30/18
    13513513500001
    [19] † Thalassiodracon hawkinsii
    Last Modified in 04/30/18
    2324724700001
    [20] † Hauffiosaurus longirostris
    Last Modified in 04/30/18
    208626200001
    [21] † Hauffiosaurus tomistomimus
    Last Modified in 04/30/18
    8918218100001
    [22] † Hauffiosaurus zanoni
    Last Modified in 04/30/18
    10516616500001
    [23] † Marmornectes candrewi
    Last Modified in 04/30/18
    14412612600001
    [24] † Peloneustes philarchus
    Last Modified in 04/30/18
    2224924800001
    [25] † Simolestes vorax
    Last Modified in 04/30/18
    8118918900001
    [26] † Pliosaurus funkei
    Last Modified in 04/30/18
    209616100001
    [27] † Pliosaurus westburyensis
    Last Modified in 04/30/18
    14512612500001
    [28] † Pliosaurus carpenteri
    Last Modified in 04/30/18
    14013113000001
    [29] † Pliosaurus brachydeirus
    Last Modified in 04/30/18
    179929100001
    [30] † Pliosaurus macromerus
    Last Modified in 04/30/18
    197757300001
    [31] † Pliosaurus brachyspondylus
    Last Modified in 04/30/18
    201716900001
    [32] † Pliosaurus cf kevani
    Last Modified in 04/30/18
    192807800001
    [33] † Pliosaurus kevani
    Last Modified in 04/30/18
    15911211100001
    [34] † Gallardosaurus iturraldei
    Last Modified in 04/30/18
    184868600001
    [35] † Pliosaurus rossicus
    Last Modified in 04/30/18
    220505000001
    [36] † Pliosaurus irgisensis
    Last Modified in 04/30/18
    216545400001
    [37] † Pliosaurus andrewsi
    Last Modified in 04/30/18
    9417717600001
    [38] † Liopleurodon ferox
    Last Modified in 04/30/18
    6021021000001
    [39] † Kronosaurus queenslandicus
    Last Modified in 04/30/18
    1721009800001
    [40] † Polyptychodon sp
    Last Modified in 04/30/18
    251191900001
    [41] † Megacephalosaurus eulerti
    Last Modified in 04/30/18
    16410610600001
    [42] † Brachauchenius lucasi
    Last Modified in 04/30/18
    15511611500001
    [43] † Brachauchenius mna
    Last Modified in 04/30/18
    14812312200001
    [44] † QM f51291
    Last Modified in 04/30/18
    238333200001
    [45] † Attenborosaurus conybeari
    Last Modified in 04/30/18
    14712412300001
    [46] † Plesiosaurus dolichodeirus
    Last Modified in 04/30/18
    3623923400001
    [47] † Eoplesiosaurus antiquior
    Last Modified in 04/30/18
    193777700001
    [48] † Eretmosaurus rugosus
    Last Modified in 04/30/18
    184898600001
    [49] † Westphaliasaurus simonsensii
    Last Modified in 04/30/18
    175959500001
    [50] † Seelyosaurus guilelmiimperatoris
    Last Modified in 04/30/18
    12314814700001
    [51] † Microcleidus tournemirensis
    Last Modified in 04/30/18
    8119018900001
    [52] † Microcleidus brachypterygius
    Last Modified in 04/30/18
    9117917900001
    [53] † Microcleidus homalospondylus
    Last Modified in 04/30/18
    5221821800001
    [54] † Plesiopterys wildi
    Last Modified in 04/30/18
    8618418400001
    [55] † Cryptoclidus eurymerus
    Last Modified in 04/30/18
    2125224900001
    [56] † Tricleidus seeleyi
    Last Modified in 04/30/18
    7319819700001
    [57] † Muraenosaurus leedsii
    Last Modified in 04/30/18
    10616516400001
    [58] † Kimmerosaurus langhami
    Last Modified in 04/30/18
    16910110100001
    [59] † Pantosaurus striatus
    Last Modified in 04/30/18
    204676600001
    [60] † Picrocleidus beloclis
    Last Modified in 04/30/18
    13513613500001
    [61] † Tatenectes laramiensis
    Last Modified in 04/30/18
    16810410200001
    [62] † Plesiosaurus mansellii
    Last Modified in 04/30/18
    230414000001
    [63] † Colymbosaurus trochanterius
    Last Modified in 04/30/18
    183878700001
    [64] † Djupedallia engeri
    Last Modified in 04/30/18
    185868500001
    [65] † Spitrasaurus spp
    Last Modified in 04/30/18
    16710510300001
    [66] † Abyssosaurus nataliae
    Last Modified in 04/30/18
    191827900001
    [67] † Umoonasaurus demoscyllus
    Last Modified in 04/30/18
    13513513500001
    [68] † Nichollssaura borealis
    Last Modified in 04/30/18
    5921221100001
    [69] † Leptocleidus capensis
    Last Modified in 04/30/18
    14113112900001
    [70] † Leptocleidus superstes
    Last Modified in 04/30/18
    15711511300001
    [71] † Vectocleidus pastorum
    Last Modified in 04/30/18
    242282800001
    [72] † Brancasaurus brancai
    Last Modified in 04/30/18
    6620520400001
    [73] † Gronausaurus wegneri
    Last Modified in 04/30/18
    197737300001
    [74] † Speeton clay plesiosaurian
    Last Modified in 04/30/18
    171999900001
    [75] † Wapuskanectes betsynichollsae
    Last Modified in 04/30/18
    234373600001
    [76] † Futabasaurus suzukii
    Last Modified in 04/30/18
    15212011800001
    [77] † Callawayasaurus colombiensis
    Last Modified in 04/30/18
    8519118500001
    [78] † Eromangasaurus australis
    Last Modified in 04/30/18
    195767500001
    [79] † Kaiwhekea katiki
    Last Modified in 04/30/18
    15311811700001
    [80] † Aristonectes parvidens
    Last Modified in 04/30/18
    16610510400001
    [81] † Libonectes morgani
    Last Modified in 04/30/18
    10316716700001
    [82] † Hydrotherosaurus alexandrae
    Last Modified in 04/30/18
    9018318000001
    [83] † Edgarosaurus muddi
    Last Modified in 04/30/18
    9717417300001
    [84] † Plesiopleurodon wellesi
    Last Modified in 04/30/18
    1731029700001
    [85] † Richmond pliosaur
    Last Modified in 04/30/18
    8119218900001
    [86] † Stenorhynchosaurus munozi
    Last Modified in 04/30/18
    14512912500001
    [87] † Anguanax zignoi
    Last Modified in 04/30/18
    233393700001
    [88] † Makhaira rossica
    Last Modified in 04/30/18
    254161600001
    [89] † Luskhan itilensis
    Last Modified in 04/30/18
    6920920100001
    [90] † Palmulasaurus quadratus
    Last Modified in 04/30/18
    197747300001
    [91] † Pahasapasaurus haasi
    Last Modified in 04/30/18
    16710610300001
    [92] † Polycotylus latipinnis
    Last Modified in 04/30/18
    4422922600001
    [93] † Thililua longicollis
    Last Modified in 04/30/18
    200737000001
    [94] † Trinacromerum bentonianum
    Last Modified in 04/30/18
    9317817700001
    [95] † Dolichorhynchops osborni
    Last Modified in 04/30/18
    1725625300001
    [96] † Dolichorhynchops bonneri
    Last Modified in 04/30/18
    4822322200001


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    Project overview536
    Taxon list1605
    Media views494Media search (417 views); M462865 (77 views);
    Matrix views207Matrix landing page (167 views); Phylogenetic matrix (40 views);
    Documents list166
    Bibliography108
    Views for media list157
    Specimen list239




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    Total downloads from project54
    Project downloads47
    Document downloads6Size data (1 download); Ready-to-use dental data (2 downloads); Dental data and features (3 downloads);
    Matrix downloads1Phylogenetic matrix (1 download);