Tropidodiscidae

Tropidodiscidae is an extinct family of Paleozoic fossil molluscs with isostrophically coiled shells. They are of uncertain position taxonomically, in other words it is not known whether they were (Gastropoda (snails) or Monoplacophora)s.

Tropidodiscidae
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda or Monoplacophora
Superfamily:
Bellerophontoidea
Family:
Tropidodiscidae

Knight, 1956[1]
Genera

See text

Synonyms

Temnodiscinae Horný, 1963

Taxonomy

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005[2] categorizes Tropidodiscidae in the superfamilia Bellerophontoidea within the Paleozoic molluscs of uncertain systematic position with isostrophically coiled shells (Gastropoda or Monoplacophora). This family has no subfamilies.

Genera

Genera in the family Tropidodiscidae include:

gollark: As they say, "specific examples of a thing do not necessarily imply a general trend, due to selection bias etc.".
gollark: Oh dear, are you going to be 4 (⁴ (four)) political?!
gollark: You may be up to 3 (three) political without sanctions.
gollark: Well, apparently they need water.
gollark: I actually managed to kill a cactus from underwatering.

References
  1. Knight J. B. 1956. New families of Gastropoda. Journal of the Washington Academy of Sciences 46(2): 41-42.
  2. Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. ISBN 3-925919-72-4. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278
  3. Meek F. B. & Worthen A. H. 1866. Descriptions of invertebrates from the Carboniferous System, Illinois. Geological Survey of Illinois 2:145-411.


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