Reconstruction of Endennasaurus acutirostris （Image source：Ghedo， CC BY-SA 4.0 ） Age Triassic（Norian） 227–208.5 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Order: Thalattosauria Family: Endennasauridae Genus: Endennasaurus Species: Endennasaurus acutirostris Morphological description Endennasaurus acutirostris was a Triassic marine reptile of modest size, reaching an estimated total length of about 1.1 m when complete, with the tail making up at least

Reconstruction of Tanystropheus hydroides （Image source：Nix Illustration， CC BY-NC 4.0 ） Age Triassic（Anisian-Ladinian） 247–237 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Order: Protorosauria Family: Tanystropheidae Genus: Tanystropheus Species: Tanystropheus hydroides Morphological description Tanystropheus hydroides is a large-bodied member of the genus, with an estimated total length exceeding 5 meters. It is characterized by an extremely elongated

Reconstruction of Hupehsuchus nanchangensis （Image source：Smokeybjb， CC BY-SA 3.0 ） Age Triassic（Olenekian） 251.2–247.2 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Order: Hupehsuchia Family: Hupehsuchidae Genus: Hupehsuchus Species: Hupehsuchus nanchangensis Morphological description Hupehsuchus nanchangensis was a small marine reptile measuring approximately 1 meter in length. Its body was elongated and rigid, with limbs modified into short, broad padd

Reconstruction of Longisquama insignis （Courtesy of Julio Lacerda） Age Triassic（Ladinian-Carnian） 242-228 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Subclass: Diapsida Clade: Drepanosauromorpha Family: Longisquamidae Genus: Longisquama Species: Longisquama insignis Morphological description The most distinctive feature of Longisquama insignis is a series of seven elongated integumentary appendages attached along its back. These structures are arranged i

Reconstruction of Shringasaurus indicus （Image source：Mario Lanzas， CC BY-SA 4.0 ） Age Triassic（ Anisian ） 247-242 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Order: Allokotosauria Family: Azendohsauridae Genus: Shringasaurus Species: Shringasaurus indicus Morphological description Shringasaurus indicus possessed a body plan reminiscent of a large monitor lizard, combined with a skull superficially similar to that of a ceratosaur, and a neck and dentit

Reconstruction of Gondwanax paraisensis （Courtesy of Müller RT ） Age Triassic（Ladinian-Early Carnian） 237-232 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Sauropsida Superorder: Dinosauria (?) Order: Ornithischia (?) Family: Silesauridae Genus: Gondwanax Species: Gondwanax paraisensis Morphological description The holotype of Gondwanax paraisensis consists of a complete right femur (CAPPA/UFSM 0417), displaying a slightly curved profile. The medial articular surface