Welcome to the Molluscs subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Raha
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Caenogastropoda
Superfamily:
Loxonematacea
Family:
Zygopleuridae
Formal Genus Name and Reference:
Raha MARWICK, 1953
Type Species:
Coronaria spectabilis TRECHMANN, 1918
Images
(Click to enlarge in a new window)
Fig. 209,10. *R. spectabilis (Trechmann), X0.7 (204)
Synonyms
Geographic Distribution
N.Z.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Carn.)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias.(Carn.)
Ending International Stage:
Carnian
Fraction Up In Ending Stage:
100
Ending Date:
227.3
Description
Large, coeloconoid, lower part of whorls with strong rounded ribs ending by suture in tubercles, spiral threads present, strongest on unribbed region, collabral lines almost straight
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Caenogastropoda
Superfamily:
Loxonematacea
Family:
Zygopleuridae
Formal Genus Name and Reference:
Raha MARWICK, 1953
Type Species:
Coronaria spectabilis TRECHMANN, 1918
Images
(Click to enlarge in a new window)
Fig. 209,10. *R. spectabilis (Trechmann), X0.7 (204)
Synonyms
Geographic Distribution
N.Z.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Carn.)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias.(Carn.)
Ending International Stage:
Carnian
Fraction Up In Ending Stage:
100
Ending Date:
227.3
Description
Large, coeloconoid, lower part of whorls with strong rounded ribs ending by suture in tubercles, spiral threads present, strongest on unribbed region, collabral lines almost straight