Sphenodontidae - Wikipedia
Sphenodontidae is a family within the reptile group Rhynchocephalia, comprising taxa most closely related to the living tuatara (Sphenodon punctatus). Historically the taxa included within Sphenodontidae have varied greatly between analyses, and the group has lacked a …
Sphenodontia - CK12-Foundation
2024年12月1日 · Order Sphenodontia. Sphenodontia includes only one living genus that has just two living species, both tuataras (Sphenodon). The tuatara is a sphenodont that is found only in New Zealand.
Sphenodontia - Meet the Tuatara - Reptile Knowledge
The Sphenodontia order of reptiles has a long history that dates back to the Mesozoic Era. The species Tuatara is the only remaining member of this once diverse order.
Sphenodontia - Simple English Wikipedia, the free encyclopedia
The Sphenodontia is a diverse group of reptile. It includes only one living genus, the tuatara (Sphenodon). An alternative name for the order is the Rhynchocephalia. They are an offshoot from the evolutionary line leading to the lizards and snakes. They had many families during the late Triassic and Jurassic periods but then declined. They are ...
Rhynchocephalia - Wikipedia
Rhynchocephalia (/ ˌrɪŋkoʊsɪˈfeɪliə /; lit. 'beak-heads') is an order of lizard-like reptiles that includes only one living species, the tuatara (Sphenodon punctatus) of New Zealand. Despite its current lack of diversity, during the Mesozoic rhynchocephalians were a speciose group with high morphological and ecological diversity.
Tuatara - Wikipedia
Tuatara, along with other now-extinct members of the order Rhynchocephalia, belong to the superorder Lepidosauria, as do the order Squamata, which includes lizards and snakes. Squamates and tuatara both show caudal autotomy (loss of the tail-tip when threatened), and have transverse cloacal slits.
It’s not a lizard or a dinosaur - the tuatara is something else ...
2017年12月3日 · It might look like a regular old lizard, but when scientists were first classifying the species – (Sphenodon punctatus) – its bizarre skeleton set it apart as the sole member of the ancient reptile order Sphenodontia. The other existing orders of the Reptilia class are turtles, crocodilians, snakes, amphisbaenians (‘worm lizards’), and lizards.
ADW: Sphenodontidae: INFORMATION
Two extant species in one genus (Sphenodon) comprise Sphenodontidae. Tuataras are currently restricted to small islands off New Zealand, where they live amongst sea bird colonies, and even share burrows with these birds.
Sphenodontia Tuatara (Sphenodontidae) | Encyclopedia.com
It was Gray's successor at the British Museum, Albert Günther, who realized, in 1867, that tuatara belonged to an array of fossils in an order of its own, today referred to as Sphenodontia. The sphenodontians have a fossil record of about 225 million years and, as a group, were most diverse in the late Triassic and Jurassic 180–220 million ...
Sphenodontia - Veterian Key
2016年8月27日 · Superficially similar to lizards, tuatara have a number of anatomic and physiologic features that, collectively, place them in their own order: (1) unique dentition, 10 (2) absence of an external auditory aperture, 15 (3) absence of a male intromittant copulatory organ, 4,7 (4) abdominal ribs (gastralia) reinforced by uncinate processes,7,19 (5)...
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