User:Abyssal/Prehistory of Asia/DYK/12

• ... that multiple Leptocleidus skeletons have been found preserved as gemstone quality opal over the course of the history of plesiosaur research?

• ... that fossils of the extinct bivalve family Praenuculidae have been found on every continent except Antarctica?

• ... that the discovery of the fossil of Shenshou, a squirrel-like early mammal from the Tiaojishan Formation, pushed the origin of mammals back to the Late Triassic, 220 million to 200 million years ago?

• ... that the extinct ant-like stone beetle Kachinus, found in Cretaceous amber, is similar in appearance to the modern genus Paraneseuthia?

• ... that the clawless lobster Tricarina is known from a single fossil, obtained from an oil well 3,852 m (12,638 ft) below ground in western Iran?