ステゴサウルス

📖 1. 概要

背中に並ぶ17枚のひし形の骨板（プレート）と、尾の先端にある4本の骨質のトゲ（サゴマイザー、Thagomizer）で有名なジュラ紀の剣竜類です。

🌐 Wikipedia 要約抜粋

Stegosaurus is a genus of extinct herbivorous four-legged armored dinosaurs from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails. Fossils of the genus have been found in the western United States and in Portugal, where they are found in Kimmeridgian- to Tithonian-aged strata, dating to between 155 and 145 million years ago. Of the species that have been classified in the upper Morrison Formation of the western US, only three are universally recognized: S. stenops, S. ungulatus and S. sulcatus. The remains of over 80 individual animals of this genus have been found. Stegosaurus would have lived alongside dinosaurs such as Apatosaurus, Diplodocus, Camarasaurus and Allosaurus, the latter of which may have preyed on it.

🦴 2. 体の構造と特徴

背中の骨板にある血管網で体温を調節し、尾のトゲを振り回してアロサウルスを撃退しました。

🔍 3. 化石記録と古生態

ジュラ紀後期のモリソン層を代表する草食恐竜です。

🇰🇷 4. 韓国との関わり

中生代鳥盤目の装盾類（装甲恐竜）の進化を説明する上で中核となる標本です。