Cryptodiran turtles

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August undefined, 2024

The Cryptodira (Greek: hidden neck) are a suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pleurodira (side-necked turtles) in that they lower their necks and pull the heads straight back into the shells, instead of folding their necks sideways along the body under the … See more The Cryptodira are characterized by retraction of the head in the vertical plane, which permits for primarily vertical movements and restricted lateral movements outside of the shell. These motions are largely … See more • Trionychidae (Soft Shell Turtles) are found from North America, Africa, South and East Asia to New Guinea. • Kinosternidae (Mud and Musk Turtles) are found from Eastern … See more Cryptodires evolved from pleurodires during the early Jurassic period, originating from South America and Southeast Asia. By the end of the Jurassic, … See more • Baur, George (June 1890). "On the Classification of the Testudinata". The American Naturalist. 24 (282): 530–536. doi:10.1086/275138. JSTOR 2450882. • Rhodin, Anders G.J.; van Dijk, Peter Paul; Inverson, John B.; Shaffer, H. Bradley; Roger, Bour (2011 … See more WebSep 4, 2013 · (E–J) ‘Rib’ rudiments in different adult cryptodiran turtles. (K–M) Stem turtle necks (after Gaffney, 1985; Gaffney, 1990). The parapophyses of the intercentra are dotted. Whether a rib is actually present at the atlas of Meiolania platyceps is not certain (M, Gaffney, 1985) and is illustrated as “potential rib” herein.

Taxonomy and Phylogeny of the Higher Categories …

The Pleurodira are identified by the method with which they withdraw their heads into their shells. In these turtles, the neck is bent in the horizontal plane, drawing the head into a space in front of one of the front legs. A larger overhang of the carapace helps to protect the neck, which remains partially exposed after retraction. This differs from the method employed by a cryptodiran, which tuck… WebCarettochelyidae is a family of cryptodiran turtles belonging to the Trionychia. It contains only a single living species, the pig-nosed turtle ( Carettochelys insculpta) native to New Guinea and Northern Australia. Stem-group carettochelyids are known from the Cretaceous of Asia, with the family being widely distributed across North America ... pinewood elementary school in eagan mn

A new eucryptodiran turtle from the Early Cretaceous Jiufotang ...

WebBuoyancy, Locomotion, Morphology of the Pelvic Girdle and Hindlimb, and Systematics of Cryptodiran Turtles BY GEORGE R. ZUGr Division of Reptiles and Amphibians … WebIt is identified as the oldest known cryptodire because of the presence of a distinctive cryptodiran jaw mechanism consisting of a trochlea over the otic chamber that redirects … WebMar 1, 2024 · They include lizards, snakes, crocodiles, birds, and turtles, as well as many fossil groups. In this chapter we revise the otic anatomy of early reptilians, including … pinewood elementary school md

Embryonic remnants of intercentra and cervical ribs in turtles

Cryptodiran turtles

Patterning of the turtle shell - ScienceDirect

WebWithin amniotes, mammals, turtles, and crocodilians are known to have 'glans' tissues distinct from the tissues that stiffen the phallus (Kelly 1999b (Kelly , 2004Moore et al. 2012); as these... Webcryptodiran turtles include the Chelydridae, Kinosternidae, Dermatemydidae, Platysterni-dae, Emydidae and Testudinidae and are usu ally placed in the Testudinoidea (Williams, …

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WebDec 31, 2014 · The cervical and caudal vertebrae of the cryptodiran turtle, Meiolania platyceps, from the Pleistocene of Lord Howe Island, Australia. "Meiolania platyceps, a … WebAug 1, 2024 · The main cryptodiran species used as research models range from having a complete shell in the slider turtle (Trachemys scripta) to reductions in both the bony and ectodermal scutes in the Chinese softshell turtle (Pelodiscus sinensis); the pleurodiran model, the red-bellied short-necked turtle (Emydura subglobosa), has a complete shell …

WebThe Adocidae are an extinct family of aquatic and omnivorous turtles. They are freshwater cryptodiran turtles and are mainly known from Cretaceous and Paleogene Asia and North America. [1] Skull and shell of Glyptops ornatus, and shell of Adocus beatus Taxonomy [ edit] Phylogeny modified from Danilov et al. (2013). [1] WebThe Cryptodira ( Greek: hidden neck) are a suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pleurodira (side-necked turtles) in that they …

WebCryptodira is the taxonomic suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pleurodira (side-neck turtles) in that they lower their necks … WebContrary to cryptodiran turtles, in which the articular surface on the quad-rate exhibits two rounded anterio-posterior ridges separated by a depression, here the whole surface of the quadrate bone is concave. Hyolaryngeal skeleton (Fig. 2). The hyoid ap-paratus of Pelusios castaneus is well developed, as it is in all aquatic-feeding turtles.

WebOct 23, 2015 · At the dawn of turtle evolution, associated to the ancestrally retracted (laterally rotated) neck, the cervicals were less specialized than in extant taxa. For cryptodires, that condition may...

http://www.tolweb.org/articles/?article_id=583 pinewood elementary school martin countyWebNov 15, 2010 · A new eucryptodiran turtle from the Jiufotang Formation of Lamadong, Jianchang County, represents the third turtle taxon, Liaochelys jianchangensis gen. et sp. nov., from the Jehol Biota of western Liaoning Province, China. This taxon is diagnosed by a character combination including a midline contact of the prefrontals, vertebrals wider … pinewood elementary school martin county flWebApr 12, 2024 · Based on histological cross-sections, the chondrocranium of the common musk turtle (Sternotherus odoratus) was reconstructed, described, and compared with other turtles.It differs from that of other turtle chondrocrania by possessing elongated, slightly dorsally orientated nasal capsules with three dorsolateral foramina, which might be … pinewood elementary school mnhttp://www.prehistoric-wildlife.com/species/a/adocus.html pinewood elementary school mims floridaWebTime period: Barremian of the Early Cretaceous through to the end of the Oligocene. Fossil representation: Multiple specimens,‭ ‬some almost complete. Adocus is a genus of freshwater cryptodiran turtle that lived … pinewood elementary school mt hollyWebcryptodiran turtles include the Chelydridae, Kinosternidae, Dermatemydidae, Platysterni-dae, Emydidae and Testudinidae and are usu-ally placed in the Testudinoidea (Williams, … pinewood elementary school omaha neWebThe penes of cryptodiran turtles are highly diverse in structure. For this reason, it is difficult to describe a generalized penis which woultl include all tlle structural dif-f'erences observed in the various ... the penial morphology of other cryptodiran genera. In the relaxed state, the penis lies ventromedially in the cloaca (Fig. 1A). pinewood elementary school mount holly nc