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Suborder of reptiles
The Cryptodira (Greek: hidden neck) are a suborder of Testudines that includes most living tortoises and turtles. Cryptodira is commonly called the "Hidden-Neck
Cryptodira
Suborder of turtles
being the Cryptodira) more known commonly as the side-necked turtles. The name "Pleurodira" translates to "side neck", whereas the Cryptodira are known
Pleurodira
Family of land turtles
in tortoises is generally hard, and like other members of the suborder Cryptodira, they retract their necks and heads directly backward into the shell to
Tortoise
Reptiles of the superfamily Chelonioidea
marine turtles, are reptiles of the order Testudines and of the suborder Cryptodira. The seven existing species of sea turtles are the flatback, green, hawksbill
Sea_turtle
Order of reptiles with a shell
divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There
Turtle
Extinct clade of turtles
treated as a suborder sister to Cryptodira, they were then thought to be a very primitive lineage inside the Cryptodira according to the most common use
Paracryptodira
Clade of reptiles
Sinemydidae and Xinjiangchelyidae, which are sometimes considered members of Cryptodira, have also been found outside crown Testudines in several analyses. These
Perichelydia
Extinct genus of tortoises
and body size evolution of extant and extinct tortoises (Testudines: Cryptodira: Pan-Testudinidae)". Cladistics. 34 (6): 652–683. doi:10.1111/cla.12227
Megalochelys
(although birds are considered reptiles in the cladistic sense). Suborder Cryptodira Family Chelydridae – common snapping turtles and alligator snapping turtle
List_of_reptiles
This is a list of the reptiles of Turkey. There are 136 species of reptiles in Turkey. Family: Blanidae Genus: Blanus Alexander's worm lizard (Blanus alexandri)
List_of_reptiles_of_Turkey
Second period of the Mesozoic Era
testudinates. The two modern groups of turtles (Testudines), Pleurodira and Cryptodira, diverged by the beginning of the Late Jurassic. The oldest known pleurodires
Jurassic
Superfamily of turtles
Testudinoidea is a superfamily within the suborder Cryptodira of the order Testudines. It includes the pond turtles (Family: Emydidae), Asian turtles (Family:
Testudinoidea
Extinct species of prehistoric freshwaer softshell turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Clade: Pan-Trionychidae Genus: "Trionyx" Species: †"T." singularis Binomial
"Trionyx"_singularis
Extinct genus of turtles
of the holotype of Nanhsiungchelys wuchingensis, Ye, 1966 (Testudines: Cryptodira: Trionychoidae: Nanhsiungchelyidae)". Cretaceous Research. 95: 151–163
Nanhsiungchelys
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Kinosternidae Genus: Sternotherus Species: S. intermedius Binomial
Intermediate_musk_turtle
Extinct genus of turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Superfamily: Chelonioidea Genus: †Kimurachelys Brinkman et al., 2015 Type
Kimurachelys
Extinct genus of tortoises
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: †Taraschelon Pérez-García, 2015 Type species
Taraschelon
Extinct species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: †Alatochelon Pérez-García, Vlachos, & Murelaga
Alatochelon
Clade of turtles
developmental work have considered sea turtles to be basal members of Cryptodira and kinosternids related to the trionychians in the clade Trionychoidea
Americhelydia
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Terrapene Species: T. triunguis Binomial name
Three-toed_box_turtle
List of Reptiles
Zamenis Leopard snake (Zamenis situla) LC Order: Testudines Suborder: Cryptodira Family: Cheloniidae Genus: Caretta Loggerhead sea turtle (Caretta caretta)
List_of_reptiles_of_Malta
Series of microscopic tubes in the cortical bone
guineafowl). Scattered Haversian canals are also found in ectotherms like cryptodira turtles. Among extinct groups, dense Haversian vascularization is only
Haversian_canal
Extinct species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Terrapene Species: †T. parornata Binomial name
Terrapene_parornata
List of reptiles of the Canary Islands is an incomplete list of reptiles found in the Canary Islands. This list includes both endemic and introduced species
List of reptiles of the Canary Islands
List_of_reptiles_of_the_Canary_Islands
Last known Pinta Island tortoise
Reptilia Clade: Diapsida Order: Testudines Suborder Superfamily Family Genus Cryptodira Chelonioidea (Sea turtles) Cheloniidae †Allopleuron Caretta †Carolinochelys
Lonesome_George
Species of marine reptile distributed throughout the world
Fagan, M; Evans, SE (2012). "The head and neck anatomy of sea turtles (Cryptodira: Chelonioidea) and skull shape in Testudines". PLOS ONE. 7 (11) e47852
Loggerhead_sea_turtle
Genus of tortoises
(2014-11-01). "New generic proposal for the European Neogene large testudinids (Cryptodira) and the first phylogenetic hypothesis for the medium and large representatives
Titanochelon
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Testudo Species: T. hermanni Binomial name
Hermann's_tortoise
Geological formation in Laos
Lapparent de Broin, France (2004-09-01). "A new Shachemydinae (Chelonii, Cryptodira) from the Lower Cretaceous of Laos: preliminary data". Comptes Rendus
Grès_supérieurs_Formation
Genus of turtles
Emarginachelys cretacea is a turtle belonging to the group Cryptodira, known from well preserved fossils from the Maastrichtian stage of the Late Cretaceous
Emarginachelys
Extinct genus of sea turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Genus: †Glossochelys Seeley, 1871 Species: †G. planimentum Binomial name
Glossochelys
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Aldabrachelys Species: A. gigantea Binomial
Aldabra_giant_tortoise
Extinct genus of turtles
period. Tong, H.; Ji, S. U. A.; Ji, Q. (2004). "Ordosemys (Testudines: Cryptodira) from the Yixian Formation of Liaoning Province, Northeastern China: new
Ordosemys
Obsolete taxon of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Trionychidae Genus: Rafetus Species: R. leloii Binomial name Rafetus
Hoan_Kiem_turtle
2014). "New generic proposal for the European Neogene large testudinids (Cryptodira) and the first phylogenetic hypothesis for the medium and large representatives
Largest_prehistoric_animals
Extinct genus of reptiles
of the holotype of Nanhsiungchelys wuchingensis, Ye, 1966 (Testudines: Cryptodira: Trionychoidae: Nanhsiungchelyidae)". Cretaceous Research. 95: 151−163
Nanshiungosaurus
Late Jurassic geological formation in China
"A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China". Geological
Shaximiao_Formation
Extinct genus of turtles
representative of the Trionychia, and is possibly the oldest known member of Cryptodira. In 2013, it was proposed that this animal and the genus Yehguia are in
Sinaspideretes
Geological formation in China
of the holotype of Nanhsiungchelys wuchingensis, Ye, 1966 (Testudines: Cryptodira: Trionychoidae: Nanhsiungchelyidae)". Cretaceous Research. 95: 151−163
Nanxiong_Formation
Cretaceous marine turtle and the largest turtle ever discovered
Evolution of the Flippers and Paleoecology of Panchelonioidea (Testudines, Cryptodira)". PeerJ PrePrints. doi:10.7287/peerj.preprints.1039v1. Wieland, G. R
Archelon
Extinct family of turtles
Protostegidae as basal eucryptodiran turtles lying outside the crown group of Cryptodira (the least inclusive clade containing all living cryptodirans) and closely
Protostegidae
This is a checklist of American reptiles found in Northern America, based primarily on publications by the Society for the Study of Amphibians and Reptiles
List of reptiles of Northern America
List_of_reptiles_of_Northern_America
Species of turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Chelydridae Genus: Chelydra Species: C. serpentina Binomial name
Common_snapping_turtle
Extinct genus of turtles
Brinkman, Donald (2013-09-01). "A new species of Sinemys (Testudines: Cryptodira: Sinemydidae) from the Early Cretaceous of Inner Mongolia, China". Palaeobiodiversity
Sinemys
Subspecies of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Terrapene Species: T. carolina Subspecies: T. c
Florida_box_turtle
introduced from Britain in the 1970s, only found in the Burren) Suborder: Cryptodira Superfamily: Chelonioidea (sea turtles) Family: Dermochelyidae Genus:
List_of_reptiles_of_Ireland
Species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Cheloniidae Subfamily: Cheloniinae Genus: Eretmochelys Fitzinger
Hawksbill_sea_turtle
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Chelydridae Genus: Macrochelys Species: M. temminckii Binomial
Alligator_snapping_turtle
Subspecies of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Trachemys Species: T. scripta Subspecies: T. s
Red-eared_slider
Species of sea turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Cheloniidae Genus: Lepidochelys Species: L. olivacea Binomial
Olive_ridley_sea_turtle
Extinct family of turtles
the Spanish Lower Cretaceous Camerochelys vilanovai (Testudines, Pan-Cryptodira)". Journal of Iberian Geology. in press. doi:10.1007/s41513-017-0014-6
Xinjiangchelyidae
Species of sea turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Cheloniidae Genus: Lepidochelys Species: L. kempii Binomial name
Kemp's_ridley_sea_turtle
Genus of dinosaur from the Late Cretaceous period
five taxa, four from Chelidae (Pleurodira) and one from Meiolaniidae (Cryptodira). Plesiosaurs include two elasmosaurs (Kawanectes and Chubutinectes) and
Carnotaurus
Species of freshwater turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Trionychidae Genus: Nilssonia Species: N. gangetica Binomial name
Indian_softshell_turtle
Extinct clade of reptiles
turtles, defined as all taxa more closely related to Meiolania than to Cryptodira and Pleurodira. It is known from the Early Cretaceous to the Holocene
Meiolaniformes
Species of marine reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Dermochelyidae Subfamily: Dermochelyinae Genus: Dermochelys Blainville
Leatherback_sea_turtle
List of reptile genera lists the vertebrate class of reptiles by living genus, spanning two subclasses. Turtles are reptiles of the order Testudines characterized
List_of_reptile_genera
Subspecies of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Trachemys Species: T. scripta Subspecies: T. s
Yellow-bellied_slider
Species of large sea reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Cheloniidae Subfamily: Cheloniinae Genus: Chelonia Brongniart
Green_sea_turtle
Species of turtle endemic to China
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Trionychidae Genus: Pelodiscus Species: P. huangshanensis Binomial
Huangshan_softshell_turtle
Species of giant tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Chelonoidis Species: C. niger Subspecies:
Floreana_giant_tortoise
Subspecies of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Testudo Species: T. hermanni Subspecies: T
Testudo_hermanni_hermanni
Extinct genus of turtles
Mesozoic and Cenozoic stem-trionychian Adociadae and Nanhsiungchelyidae (Cryptodira: Adocusia) from Central Asia, Mongolia, and North America". Fossil Record
Basilemys
Species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Subfamily: Deirochelyinae Genus: Chrysemys Species: C
Painted_turtle
Genus of turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Chelydridae Genus: Chelydra Schweigger, 1812 Type species Chelydra
Chelydra
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Centrochelys Species: C. sulcata Binomial
African_spurred_tortoise
Species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Chelonoidis Species: C. niger Binomial name
Galápagos_tortoise
Subspecies of Galápagos tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Chelonoidis Species: C. niger Subspecies:
Pinta_Island_tortoise
Extinct genus of dinosaurs
of the holotype of Nanhsiungchelys wuchingensis, Ye, 1966 (Testudines: Cryptodira: Trionychoidae: Nanhsiungchelyidae)". Cretaceous Research. 95: 151−163
Qianzhousaurus
Subspecies of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Trachemys Species: T. stejnegeri Subspecies: T
Dominican_slider
; Tałanda, M. (2026). "First occurrences of Trionychidae (Testudines, Cryptodira) from the Miocene of Poland: Detailed cranial anatomy and biogeographic
2026_in_reptile_paleontology
Extinct genus of turtles
Wang, Kebai; Chen, Shuqing; Xu, Xing (2013). "Lindholmemydid turtles (Cryptodira: Testudinoidea) from the Late Cretaceous of Shandong Province, China"
Shandongemys
Extinct clade of turtles
Angolachelonia, which, unlike as found by Anquetin et al. earlier, was outside Cryptodira and Testudines. The phylogeny below of Thalassochelydian inter-relationships
Thalassochelydia
Subspecies of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Testudo Species: T. graeca Subspecies: T. g
Tunisian_tortoise
Extinct genus of turtles
but like derived turtles such as casichelydians, a group containing Cryptodira and Pleurodira, it possesses a sutured basipterygoidal attachment, and
Australochelys
Family of turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Superfamily: Trionychia Clade: Pan-Trionychidae Joyce et al., 2004 Family:
Trionychidae
Endangered species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Trionychidae Genus: Rafetus Species: R. swinhoei Binomial name
Yangtze giant softshell turtle
Yangtze_giant_softshell_turtle
Species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Gopherus Species: G. polyphemus Binomial name
Gopher_tortoise
Subspecies of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Terrapene Species: T. ornata Subspecies: T. o
Ornate_box_turtle
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Kinosternidae Genus: Kinosternon Species: K. scorpioides Binomial
Scorpion_mud_turtle
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Gopherus Species: G. morafkai Binomial name
Sonoran_Desert_tortoise
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Chrysemys Species: C. dorsalis Binomial name Chrysemys
Southern_painted_turtle
Extinct species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Chelonoidis Species: †C. cubensis Binomial
Chelonoidis_cubensis
Extinct genus of sea turtles
Ctenochelys (meaning "comb tortoise") is an extinct genus of marine turtle (Cryptodira, Ctenochelyidae), which existed during the Cretaceous period, and lived
Ctenochelys
Species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Malaclemys Gray, 1844 Species: M. terrapin Binomial
Diamondback_terrapin
Clade of turtles
†Jurassichelon †Solnhofia †Santanachelys †Portlandemys †Pleisochelys †Macrobaenidae †Xinjiangchelyidae crown group Cryptodira (hidden neck turtles, tortoises)
Mesochelydia
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Emydidae Genus: Terrapene Species: T. ornata Binomial name Terrapene
Terrapene_ornata
Clade comprising turtles, birds and crocodilians
Testudines Pleurodira Chelidae Pelomedusoides Pelomedusidae Podocnemididae Cryptodira Trionychia Carettochelyidae Trionychidae Durocryptodira Archosauria Crocodilia
Archelosauria
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Gopherus Species: G. agassizii Binomial name
Desert_tortoise
Genus of tortoises
(1957). "Revision of the African tortoises and turtles of the suborder Cryptodira". Bull. Mus. Comp. Zool. Harvard 115: 163–557. Bour R (2006). "Identity
Aldabrachelys
Geological formation in the United States
Cloverly Formation Genus Species State Stratigraphic position Material Notes Cryptodira Indeterminate "Glyptops" "G". pervicax Naomichelys N. speciosa Testudinata
Cloverly_Formation
Extinct family of sea turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Superfamily: Chelonioidea Family: †Ctenochelyidae Karl, Biermann & Tichy
Ctenochelyidae
Species of tortoise
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Testudinidae Genus: Testudo Species: T. kleinmanni Binomial name
Kleinmann's_tortoise
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Trionychidae Genus: Apalone Species: A. spinifera Binomial name
Spiny_softshell_turtle
Extinct family of turtles
turtles in the clade Thalassochelydia originally classified within the Cryptodira suborder, mostly belonging from the Jurassic period. An alternate study
Plesiochelyidae
Extinct species of reptile
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Kinosternidae Genus: Kinosternon Species: †K. skullridgescens
Kinosternon_skullridgescens
Extinct genus of reptiles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: †Nanhsiungchelyidae Genus: †Xianyuechelys Ke et al., 2024 Species:
Xianyuechelys
Subfamily of turtles
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Kinosternidae Subfamily: Kinosterninae Agassiz, 1857 Genera Kinosternon
Kinosterninae
Species of reptile found in South Asia
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Geoemydidae Genus: Melanochelys Species: M. trijuga Binomial name
Indian_black_turtle
Species of turtle
Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Superfamily: Trionychia Family: Carettochelyidae Genus: Carettochelys
Pig-nosed_turtle
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CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
CRYPTODIRA
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