| 词条 | Cydrocrinus |
| 释义 |
| name = Cydrocrinus | image = Cladida - Cydrocrinus.JPG | image_width = 240px | image_caption = Fossil of Cydrocrinus from Carboniferous of United States | fossil_range = {{Fossil range|Carboniferous}} | regnum = Animalia | phylum = Echinodermata | subphylum = Crinozoa | classis = Crinoidea | subclassis = Camerata | ordo = Cladida | genus = Cydrocrinus | genus_authority =Kirk, 1940 [1] }} Cydrocrinus is an extinct genus of crinoids. Fossil recordsThis genus is known in the fossil records of the Carboniferous period of United States (age range: 345.3 to 342.8 million years ago).[2] References1. ^Kirk, E. 1940. Seven new genera of Carboniferous Crinoidea Inadunata. Journal of the Washington Academy of Science 30: 321 - {{Taxonbar|from=Q22286699}}{{paleo-crinoidea-stub}}2. ^Paleobiology Database 2 : Cladida|Prehistoric crinoid genera |
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