Loading AI tools
来自维基百科,自由的百科全书
齒菊石屬(學名:Ceratites)是生存於三疊紀的一屬菊石,生活在淺海中。其外殼反旋,並有一寬闊的核心和扁平的腹。側面有突出、間距很大的肋條,肋條端為腹緣上的結節。緊密的縫合線有著十分特別的結構:朝前的為光滑而圓的褶皺,朝後的則是齒狀褶皺。[2]
本属包括以下物种:[1]
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.