Genus
Valid Extinct

Cryptoclidus

(Seeley 1892)

Cryptoclidus is a genus of plesiosaur reptile from the Middle Jurassic period of England, France, and Cuba.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
17
Group
Sauroptérygiens
Carnivore aquatic, depth=surface Marine
Cryptoclidus
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Sauropterygia Suborder
›
Plesiosauria Order
›
Plesiosauroidea Superfamily
›
Cryptoclididae Family
›
Cryptoclidus Genus
Measurements
Length
8 m ⓘ
Fossil sites 17 geolocated sites
Distribution
Top countries
🇬🇧 United Kingdom
14
🇦🇷 Argentina
1
🇨🇺 Cuba
1
🇫🇷 France
1
Geological formations
Oxford Clay
12
Lajas
1
Jagua
1
Kimmeridge Clay
1
Portland Stone
1
Temporal distribution
Tithonian (149.2–143.1 Ma)
1
Kimmeridgian (154.8–149.2 Ma)
2
Oxfordian (161.5–154.8 Ma)
4
Callovian (165.3–161.5 Ma)
10
Species (10)
Apractocleidus teretipes subjective synonym of Cryptoclidus eurymerus 165 Ma
Cryptocleidus cuervoi nomen dubium, species not entered Cryptoclidus
Cryptoclidus eurymerus 165 Ma
Cryptoclidus platymerus subjective synonym of Cryptoclidus eurymerus 165 Ma
Cryptoclidus richardsoni 165 Ma
Cryptoclidus vignalensis nomen dubium, species not entered Cryptoclidus 162 Ma
Plesiosaurus durobrivensis subjective synonym of Cryptoclidus eurymerus 165 Ma
Plesiosaurus oxfordiensis nomen nudum, species not entered Cryptoclidus
Plesiosaurus oxoniensis nomen dubium, species not entered Cryptoclidus 165 Ma
Plesiosaurus plicatus subjective synonym of Cryptoclidus richardsoni 165 Ma
Synonyms (5)
Apractocleidus objective synonym of Cryptoclidus
Cryptocleidus cuervoi nomen dubium, species not entered Cryptoclidus
Cryptoclidus vignalensis nomen dubium, species not entered Cryptoclidus
Plesiosaurus oxfordiensis nomen nudum, species not entered Cryptoclidus
Plesiosaurus oxoniensis nomen dubium, species not entered Cryptoclidus
Bibliography
Original description
H. G. Seeley. 1892. The Nature of the Shoulder Girdle and Clavicular Arch in Sauropterygia. Proceedings of the Royal Society of London 51:119-151
Bibliography (11)
R. Araujo, A. S. Smith, and J. Liston. 2008. Alfred Leeds fossil vertebrate collection of the National Museum of Ireland - Natural History. Irish Journal of Earth Sciences 26:17-32 DOI ↗
M. Iturralde-Vinent and M. A. Norell. 1996. Synopsis of Late Jurassic marine reptiles from Cuba. American Museum Novitates 3164:1-17
Z. Gasparini and L. Spalletti. 1993. First Callovian plesiosaurs from the Neuquen Basin, Argentina. Ameghiniana 30(3):245-254
D. M. Martill. 1986. The stratigraphic distribution and preservation of fossil vertebrates in the Oxford Clay of England. Mercian Geologist 10(3):161-186
A. Vadet and J. M. Rose. 1986. Catalogue commente des types et figures de dinosauriens, ichthyosauriens, sauropterygiens, pterosauriens et cheloninens du Musée d'Histoire Naturelle de Boulogne-sur-Mer [Annotated catalogue of the type and figured specimens of dinosaurs, ichthyosaurs, sauropterygians, pterosaurs, and turtles from the Musée d'Histoire Naturelle of Boulogne-sur-Mer]. In E. Buffetaut, J. M. Rose, & A. Vadet (eds.), Vértébrés Fossiles du Boulonnais. Mémoires de la Société Académique du Boulonnais 1(2):85-97
D. Martill. 1984. The occurrence of a dinosaurian phalanx in the Lower Oxford Clay of Peterborough, Cambridge. Mercian Geologist 9(4):209-211
D. S. Brown. 1981. The English Upper Jurassic Plesiosauroidea (Reptilia) and a review of the phylogeny and classification of the Plesiosauria. Bulletin of the British Museum (Natural History) 35(4):253-347
J. B. Delair. 1960. The Mesozoic reptiles of Dorset. Part two. Proceedings of the Dorset Natural History and Archaeological Society 80:52-90
W. R. Smellie. 1915. On a new plesiosaur from the Oxford Clay. Geological Magazine, decades 6 2:341-343 DOI ↗
G. von Arthaber. 1906. Beiträge zur Kenntnis der Organisation und der Anpassungserscheinungen des genus Metriorhynchus. Beiträge zur Paläontologie und Geologie Österreich-Ungarns und des Orients 19(4):287-320
J. Phillips. 1871. Geology of Oxford and the Valley of the Thames. Clarendon Press, Oxford DOI ↗