2012年1月17日 · The hips of dinosaurs with forward-oriented pubic bones approximated the hips of lizards, so Seeley called them the saurischians (“lizard-hipped”).

Generally the lizard-hipped dinos had thick, heavy bones in their hips whereas the bird-hipped dinos had bones that were longer and thinner. The following chart divides a list of dinos into …

2017年4月10日 · If you look closely at a skeleton of, say, an alligator, you can see the two pelvic bones called the ischium and the pubis. Although alligators aren't really lizards, they too have …

One important dinosaurian synapomorphy is the perforate acetabulum, simply a "hip bone" (actually three connected bones, together called the pelvis) with a hole in the center where the …

2023年12月15日 · The Saurischian skeleton is characterized by a lizard-like hip structure, while the Ornithischian skeleton has a bird-like hip structure. One of the key factors that differentiate …

The hip has three bones: the pubis, ischium, and ilium. Some dinosaurs have a closed hip system in which the pubis and the ischium are close together. These dinosaurs are called bird-hipped …

2022年7月8日 · Historically, dinosaurs have been divided into saurischians (“lizard-hipped”) and ornithischians (“bird-hipped”), based on the arrangement of their hip bones. In saurischians, …