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Planitrochus
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Archaeogastropoda? - Superfamilies of doubtful subordinal position
Superfamily:
Pseudophoracea
Family:
Planitrochidae
Formal Genus Name and Reference:
Planitrochus PERNER, 1903
Type Species:
P. amicus, SD PERNER, 1907
Images
(Click to enlarge in a new window)
Fig. 194,2. *P. amicus, Czech.; X1.3.
Synonyms
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
U.Sil.
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
U.Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Depressed trochiform, with sharp carinate periphery and moderately wide umbilicus, outer lip prosocline above and below periphery, ornament above periphery consisting of collabral threads, below of growth lines only.
References
Perner, Jaroslav, 1903, Patellidae et Bellerophontidae: in Barrande, Joachim, Système silurien du centre de la Bohême, v. 4, Gastéropodes, tome 1, texte p. 1-164, pl. 1-89 (Praha). 1907, [No title]: Same, tome 2, text, pl. 90-175.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Archaeogastropoda? - Superfamilies of doubtful subordinal position
Superfamily:
Pseudophoracea
Family:
Planitrochidae
Formal Genus Name and Reference:
Planitrochus PERNER, 1903
Type Species:
P. amicus, SD PERNER, 1907
Images
(Click to enlarge in a new window)
Fig. 194,2. *P. amicus, Czech.; X1.3.
Synonyms
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
U.Sil.
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
U.Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Depressed trochiform, with sharp carinate periphery and moderately wide umbilicus, outer lip prosocline above and below periphery, ornament above periphery consisting of collabral threads, below of growth lines only.
References
Perner, Jaroslav, 1903, Patellidae et Bellerophontidae: in Barrande, Joachim, Système silurien du centre de la Bohême, v. 4, Gastéropodes, tome 1, texte p. 1-164, pl. 1-89 (Praha). 1907, [No title]: Same, tome 2, text, pl. 90-175.