薄板龙 (蛇颈龙)

📖 1. 概览

代表性的长颈龙（蛇颈龙类），全长10.3米中仅颈部就长达7.1米（由72节颈椎组成）。

🌐 Wikipedia 摘要摘录

Elasmosaurus is a genus of plesiosaur that lived in North America during the Campanian stage of the Late Cretaceous period, at about 80.6 to 77 million years ago. The first specimen was discovered in 1867 near Fort Wallace, Kansas, US, and was sent to the American paleontologist Edward Drinker Cope, who named it E. platyurus in 1868. The generic name means "thin-plate reptile", and the specific name means "flat-tailed". Cope originally reconstructed the skeleton of Elasmosaurus with the skull at the end of the tail, an error which was made light of by the paleontologist Othniel Charles Marsh, and became part of their "Bone Wars" rivalry. Only one incomplete Elasmosaurus skeleton is definitely known, consisting of a fragmentary skull, the spine, and now lost pectoral and pelvic girdles, and a single species is recognized today; other species are now considered invalid or have been moved to other genera. A fragmentary specimen from Germany may belong to this genus.

🦴 2. 身体结构与特征

它像在水下扇动翅膀一样摆动四只鳍状肢进行游动。

🔍 3. 化石记录与古生态

它是19世纪古生物学界“化石战争（Bone Wars）”的标志性标本。

🇰🇷 4. 与韩国的关联

它是解释中生代海生爬行动物水生适应演化的代表物种。