Free shipping! Honghesaurus fossil is very rare, this is a museum-quality fossil, the animal is about 48 cm (without bending). The general situation is abdominal type, the details are very clear and three-dimensional. Matrix:55*29*3 cm. Honghesaurus is a genus of extinct marine reptile that lived during the early Middle Triassic period (about 244 million years ago). It belongs to the family Pachypleurosauridae, a group of small, lizard-like aquatic reptiles. Record-Breaking Tail: The tail makes up 54% of its total body length (25.4 cm out of a 47 cm total length).Maximum Vertebrae: It possesses 121 vertebrae in total, including 69 tail vertebrae, the highest count ever recorded for any pachypleurosaur. Superb Swimmer: Its extremely long, laterally compressed tail acted like an efficient paddle, providing excellent propulsion in ancient subtropical seas.