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Quenstedtoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Steogabicerataceae
Family:
Cardioceratidae
Subfamily:
Cardioceratinae
Formal Genus Name and Reference:
Quenstedtoceras HYATT, 1877
Type Species:
Am.leachi J.SOWERBY, 1819
Images
(Click to enlarge in a new window)
Fig. 375, 1. *Q. (Q.) leachi (Sow.), Eng., 1a,b, topotype, *.
Synonyms
Quenstedticeras, Vertumniceras
Geographic Distribution
Eu.-C.Russia-Donetz-Cauc.-?Anatolia-TransCaspia-FranzJosephLand-Spitz.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Callov.)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
M.Jur.(U.Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Comprises planulates with coarse sigmoid ribbing which forms chevrons on an obtusely fastigate venter
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Steogabicerataceae
Family:
Cardioceratidae
Subfamily:
Cardioceratinae
Formal Genus Name and Reference:
Quenstedtoceras HYATT, 1877
Type Species:
Am.leachi J.SOWERBY, 1819
Images
(Click to enlarge in a new window)
Fig. 375, 1. *Q. (Q.) leachi (Sow.), Eng., 1a,b, topotype, *.
Synonyms
Quenstedticeras, Vertumniceras
Geographic Distribution
Eu.-C.Russia-Donetz-Cauc.-?Anatolia-TransCaspia-FranzJosephLand-Spitz.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Callov.)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
M.Jur.(U.Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Comprises planulates with coarse sigmoid ribbing which forms chevrons on an obtusely fastigate venter