Protorosaurs are a group of extinct reptiles characterized by a long-necked, including the bizarre Tanystropheus which had a neck longer than the length of the body and tail combined.

• 这种古代爬行动物的血统尚不清楚，但弗拉塞尔认为它和一群已经灭绝的长颈爬行动物原龙有关，包括奇异的长颈龙，它的脖子比身子和尾巴合起来还要长。