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added by MKlovesBoog
This 恐龙 照片 might contain 维纳斯的捕蝇草, 捕蝇草, 金星的捕蝇草, dionaea muscipula, and 金星的蝇.
Pachycephalosaurs were among some of the last Dinosaur groups to appear. They lived 75-65 mya.
They are named after one of the best-known members of the group, Pachycephalosaurus.
Pachycephalosaurus means "thick-headed reptile," due to the domed and hugely thickened bone on the 最佳, 返回页首 of its skull--like a cyclist's crash helmet.
About 15 feet long from nose to tail, Pachycephalosaurus lived in Montana, South Dakota, and Wyoming.
Stegoceras, which also lived in North America, was about 8 feet long, with a body the size of a goat.
Homalocephale was about 10 feet long and had a flatter skull. It lived in East Asia.
Pachycephalosaurs may have defended themselves 由 loweringtheir heads and charging at their enemies.
At breeding time, the males may have engaged in head-butting contests, as some 羊 and goats do today.
They are named after one of the best-known members of the group, Pachycephalosaurus.
Pachycephalosaurus means "thick-headed reptile," due to the domed and hugely thickened bone on the 最佳, 返回页首 of its skull--like a cyclist's crash helmet.
About 15 feet long from nose to tail, Pachycephalosaurus lived in Montana, South Dakota, and Wyoming.
Stegoceras, which also lived in North America, was about 8 feet long, with a body the size of a goat.
Homalocephale was about 10 feet long and had a flatter skull. It lived in East Asia.
Pachycephalosaurs may have defended themselves 由 loweringtheir heads and charging at their enemies.
At breeding time, the males may have engaged in head-butting contests, as some 羊 and goats do today.
