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Parasilesites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Suborder:
Ammonitina
Superfamily:
Desmocerataceae
Family:
Desmoceratidae
Subfamily:
Silesitoidinae
Formal Genus Name and Reference:
Parasilesites IMLAY, 1959, p. 184
Type Species:
P. bullatus, OD
Images
(Click to enlarge in a new window)
Fig. 60, 1a, b. *P. bullatus, Lower Albian, Alaska, a, X, b, 2 (Imlay, 1959).
Synonyms
Pseudosilesitoides
Geographic Distribution
France, Balearic Islands, Sardinia, Poland, Alaska, Venezuela
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Lower Albian
Beginning International Stage:
Albian
Fraction Up In Beginning Stage:
0
Beginning Date:
113.2
Ending Stage in Treatise Usage:
Lower Cretaceous (Middle Albian)
Ending International Stage:
Albian
Fraction Up In Ending Stage:
50
Ending Date:
106.85
Description
Like Silesitoides but ribbing on outer whorl sinuous and branching from umbilical bullae
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Suborder:
Ammonitina
Superfamily:
Desmocerataceae
Family:
Desmoceratidae
Subfamily:
Silesitoidinae
Formal Genus Name and Reference:
Parasilesites IMLAY, 1959, p. 184
Type Species:
P. bullatus, OD
Images
(Click to enlarge in a new window)
Fig. 60, 1a, b. *P. bullatus, Lower Albian, Alaska, a, X, b, 2 (Imlay, 1959).
Synonyms
Pseudosilesitoides
Geographic Distribution
France, Balearic Islands, Sardinia, Poland, Alaska, Venezuela
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Lower Albian
Beginning International Stage:
Albian
Fraction Up In Beginning Stage:
0
Beginning Date:
113.2
Ending Stage in Treatise Usage:
Lower Cretaceous (Middle Albian)
Ending International Stage:
Albian
Fraction Up In Ending Stage:
50
Ending Date:
106.85
Description
Like Silesitoides but ribbing on outer whorl sinuous and branching from umbilical bullae