Conometridae

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Conometridae
File:Moanametra torehinaensis MA72848-a.jpg
Moanametra torehinaensis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Crinoidea
Order: Comatulida
Suborder: Oligophreata
Family: Conometridae
Gislén, 1924

Conometridae is a taxonomic family of crinoids in the order Comatulida.[1]

Description

[edit | edit source]

Members of the family are either conical or discoidal, and no not have radial pits or pores on the ventral side of the animal, and lack a dorsal star.[2]

Taxonomy

[edit | edit source]

The family was first described by Torsten Gislén in 1924, who noted that fossils tended to be found at the Cretaceous–Paleogene boundary.[2] Members of this family have been found in rock as early as the Cenomanian age of the Late Cretaceous, as well as Late Paleocene deposits in Europe and North Africa, and in Eocene-Miocene deposits in Italy, Denmark, New Zealand and South America.[3] Gislén theorised that the family was related to the Upper Jurassic genus Pterocoma, and that these groups may have evolved from the Pentacrinitidae family, or alternatively, the Thalassometridae family.[4]

The type genus is Conometra, which was also described by Gislén in 1924.[3]

Genera

[edit | edit source]

References

[edit | edit source]
  1. ^ a b c d e f g h Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  2. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  3. ^ a b Lua error in Module:Cite_Q/config at line 10: attempt to index field 'wikibase' (a nil value).
  4. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

Lua error in Module:Taxonbar at line 165: attempt to index field 'wikibase' (a nil value).