Project 3501: M. E. Páramo-Fonseca, C. D. Benavides-Cabra, I. E. Gutiérrez. 2019. A new specimen of Stenorhynchosaurus munozi Páramo-Fonseca et al., 2016 (Plesiosauria, Pliosauridae) from the Barremian of Colombia, new morphological features and ontogenetic implications. Journal of Vertebrate Paleontology. (In Press)
Specimen: † Stenorhynchosaurus munozi (MP050310-1/MP050310-1:MP050310-1)
View: Teeth in Lateral view

Abstract

A new specimen of Stenorhynchosaurus munozi Páramo-Fonseca et al., 2016 (Plesiosauria, Pliosauridae) found in Sáchica (Boyacá, Colombia) from upper Barremian beds of the Arcillolitas Abigarradas Member of the Paja Formation is herein described. It consists of a complete skull and 10 cervical vertebrae from an adult individual, that provides new valuable morphological information on the species: the presence of nasals covering a subsurface circular cavity where salt glands were probably lodged (new autapomorphy), the presence of a high sagittal crest on the parietal, the very elongated pineal foramen enclosed entirely within the parietals and the unfused neural arches in the cervical vertebrae. A phylogenetic analysis supports the inclusion of Stenorhynchosaurus munozi within pliosaurid clade Brachaucheninae. The morphological comparison between the juvenile and adult stages of Stenorhynchosaurus munozi shows that in the adult stage
the margins of the internal nares and the anterior part of the anterior interpterygoid vacuity are well ossified, the medial joints of the pterygoids and the mandibular symphysis are closed, and the atlas and axis are fused, but the cervical neural arches remain unfused to the centra. The growth pattern of the skull dorsal bones differs from that of the palatal elements, but the relative distance between the external and internal nares is kept the same.
A greater longitudinal growth in the skull and a negative allometric orbital growth pattern
results in a proportionally longer skull in the adult and relatively larger orbits in the
juvenile


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Project DOI: 10.7934/P3501, http://dx.doi.org/10.7934/P3501
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 102 Taxa
  • 1 Specimen
  • 270 Characters
Total size of project's media files: 4 MB

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Total scored cells: 12933
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: 690
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Total character states with media with labels:0
Total unordered/ordered characters:270/0
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    Cristian Benavides
    Project Administrator
    Last logged in 07/23/19
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    Taxonomic Overview for Matrix 'M26171' (102 Taxa)

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    [1] Yunguisaurus liae
    Last Modified in 08/07/19
    10716416300001
    [2] Pistosaurus postcranium
    Last Modified in 08/07/19
    193777700001
    [3] Pistosaurus skull
    Last Modified in 08/07/19
    187848300001
    [4] Augustasaurus hagdorni
    Last Modified in 08/07/19
    9817217200001
    [5] Bobosaurus forojuliensis
    Last Modified in 08/07/19
    211605900001
    [6] Macroplata tenuiceps
    Last Modified in 08/07/19
    10316816700001
    [7] Anningasaura lymense
    Last Modified in 08/07/19
    13014014000001
    [8] Stratesaurus taylori
    Last Modified in 08/07/19
    9317717700001
    [9] Avalonnectes arturi
    Last Modified in 08/07/19
    15611511400001
    [10] Eurycleidus arcuatus
    Last Modified in 08/07/19
    171999900001
    [11] Meyerasaurus victor
    Last Modified in 08/07/19
    9917217100001
    [12] Maresaurus coccai
    Last Modified in 08/07/19
    175979500001
    [13] Borealonectes russelli
    Last Modified in 08/07/19
    14612712400001
    [14] Atychodracon megacephalus
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    9217817800001
    [15] Archaeonectrus rostratus
    Last Modified in 08/07/19
    14112912900001
    [16] Rhomaleosaurus cramptoni
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    9717317300001
    [17] Rhomaleosaurus zetlandicus
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    11615415400001
    [18] Rhomaleosaurus thorntoni
    Last Modified in 08/07/19
    13513513500001
    [19] Thalassiodracon hawkinsii
    Last Modified in 08/07/19
    2324724700001
    [20] Hauffiosaurus longirostris
    Last Modified in 08/07/19
    208626200001
    [21] Hauffiosaurus tomistomimus
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    8918218100001
    [22] Hauffiosaurus zanoni
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    10516616500001
    [23] Marmornectes candrewi
    Last Modified in 08/07/19
    14412612600001
    [24] Peloneustes philarchus
    Last Modified in 08/07/19
    2224924800001
    [25] Simolestes vorax
    Last Modified in 08/07/19
    8118918900001
    [26] Pliosaurus funkei
    Last Modified in 08/07/19
    209616100001
    [27] Pliosaurus westburyensis
    Last Modified in 08/07/19
    14512612500001
    [28] Pliosaurus carpenteri
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    14013113000001
    [29] Pliosaurus brachydeirus
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    179929100001
    [30] Pliosaurus macromerus
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    197757300001
    [31] Pliosaurus brachyspondylus
    Last Modified in 08/07/19
    201716900001
    [32] Pliosaurus cf kevani
    Last Modified in 08/07/19
    192807800001
    [33] Pliosaurus kevani
    Last Modified in 08/07/19
    15911211100001
    [34] Gallardosaurus iturraldei
    Last Modified in 08/07/19
    184868600001
    [35] Pliosaurus rossicus
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    220505000001
    [36] Pliosaurus irgisensis
    Last Modified in 08/07/19
    216545400001
    [37] Pliosaurus andrewsi
    Last Modified in 08/07/19
    9417717600001
    [38] Liopleurodon ferox
    Last Modified in 08/07/19
    6021021000001
    [39] Kronosaurus queenslandicus
    Last Modified in 08/07/19
    15711511300001
    [40] Kronosaurus boyacensis
    Last Modified in 08/07/19
    227434300001
    [41] Sachicasaurus vitae
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    12314714700001
    [42] Acostasaurus pavachoquensis
    Last Modified in 08/07/19
    14812212200001
    [43] Polyptychodon sp
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    251191900001
    [44] Megacephalosaurus eulerti
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    15911111100001
    [45] Brachauchenius lucasi
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    15511611500001
    [46] Brachauchenius mna
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    14812312200001
    [47] QM f51291
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    238333200001
    [48] Attenborosaurus conybeari
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    14712412300001
    [49] Plesiosaurus dolichodeirus
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    3623923400001
    [50] Eoplesiosaurus antiquior
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    193777700001
    [51] Eretmosaurus rugosus
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    184898600001
    [52] Westphaliasaurus simonsensii
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    175959500001
    [53] Seelyosaurus guilelmiimperatori
    Last Modified in 08/07/19
    12314814700001
    [54] Microcleidus tournemirensis
    Last Modified in 08/07/19
    8119018900001
    [55] Microcleidus brachypterygius
    Last Modified in 08/07/19
    9117917900001
    [56] Microcleidus homalospondylus
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    [57] Plesiopterys wildi
    Last Modified in 08/07/19
    8618418400001
    [58] Cryptoclidus eurymerus
    Last Modified in 08/07/19
    2125224900001
    [59] Tricleidus seeleyi
    Last Modified in 08/07/19
    7319819700001
    [60] Muraenosaurus leedsii
    Last Modified in 08/07/19
    10616516400001
    [61] Kimmerosaurus langhami
    Last Modified in 08/07/19
    16910110100001
    [62] Pantosaurus striatus
    Last Modified in 08/07/19
    204676600001
    [63] Picrocleidus beloclis
    Last Modified in 08/07/19
    13513613500001
    [64] Tatenectes laramiensis
    Last Modified in 08/07/19
    16810410200001
    [65] Plesiosaurus mansellii
    Last Modified in 08/07/19
    230414000001
    [66] Colymbosaurus trochanterius
    Last Modified in 08/07/19
    183878700001
    [67] Djupedallia engeri
    Last Modified in 08/07/19
    185868500001
    [68] Spitrasaurus spp
    Last Modified in 08/07/19
    16710510300001
    [69] Abyssosaurus nataliae
    Last Modified in 08/07/19
    191827900001
    [70] Umoonasaurus demoscyllus
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    13513513500001
    [71] Nichollssaura borealis
    Last Modified in 08/07/19
    5921221100001
    [72] Leptocleidus capensis
    Last Modified in 08/07/19
    14113112900001
    [73] Leptocleidus superstes
    Last Modified in 08/07/19
    15711511300001
    [74] Vectocleidus pastorum
    Last Modified in 08/07/19
    242282800001
    [75] Brancasaurus brancai
    Last Modified in 08/07/19
    6620520400001
    [76] Gronausaurus wegneri
    Last Modified in 08/07/19
    197737300001
    [77] Speeton clay plesiosaurian
    Last Modified in 08/07/19
    171999900001
    [78] Wapuskanectes betsynichollsae
    Last Modified in 08/07/19
    234373600001
    [79] Futabasaurus suzukii
    Last Modified in 08/07/19
    15212011800001
    [80] Callawayasaurus colombiensis
    Last Modified in 08/07/19
    8519118500001
    [81] Eromangasaurus australis
    Last Modified in 08/07/19
    195767500001
    [82] Kaiwhekea katiki
    Last Modified in 08/07/19
    15311811700001
    [83] Aristonectes parvidens
    Last Modified in 08/07/19
    16610510400001
    [84] Libonectes morgani
    Last Modified in 08/07/19
    10316716700001
    [85] Hydrotherosaurus alexandrae
    Last Modified in 08/07/19
    9018318000001
    [86] Edgarosaurus muddi
    Last Modified in 08/07/19
    9717417300001
    [87] Plesiopleurodon wellesi
    Last Modified in 08/07/19
    1731029700001
    [88] Richmond pliosaur
    Last Modified in 08/07/19
    8119218900001
    [89] † Stenorhynchosaurus munozi
    Last Modified in 08/07/19
    9817217200001
    [90] Anguanax zignoi
    Last Modified in 08/07/19
    233393700001
    [91] Makhaira rossica
    Last Modified in 08/07/19
    254161600001
    [92] Luskhan itilensis
    Last Modified in 08/07/19
    6920920100001
    [93] Palmulasaurus quadratus
    Last Modified in 08/07/19
    197747300001
    [94] Pahasapasaurus haasi
    Last Modified in 08/07/19
    16710610300001
    [95] Polycotylus latipinnis
    Last Modified in 08/07/19
    4422922600001
    [96] Thililua longicollis
    Last Modified in 08/07/19
    200737000001
    [97] Trinacromerum bentonianum
    Last Modified in 08/07/19
    9317817700001
    [98] Dolichorhynchops osborni
    Last Modified in 08/07/19
    1725625300001
    [99] Dolichorhynchops bonneri
    Last Modified in 08/07/19
    4822322200001
    [100] Pliosaurus almanzai
    Last Modified in 08/07/19
    228424200001
    [101] Pliosaurus patagonicus
    Last Modified in 08/07/19
    257131300001
    [102] Rhaeticosaurus mertensi
    Last Modified in 08/07/19
    195777500001


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    Project overview105
    Matrix views84 (8 views); Matrix landing page (60 views); Supplemental Data Páramo-Fonseca et al (16 views);
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    Taxon list539
    Bibliography27
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    Total downloads from project16
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    Matrix downloads5 (3 downloads); Supplemental Data Páramo-Fonseca et al (2 downloads);