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Darellella
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Hildocerataceae
Family:
Graphoceratidae
Subfamily:
Graphoceratinae
Formal Genus Name and Reference:
Darellella BUCKMAN, 1904
Type Species:
D. recticostata
Images
(Click to enlarge in a new window)
Fig. 300,2. *D. recticostata, 2 a, b, X1 (595*)
Synonyms
Geographic Distribution
Eng.
Age Range
Beginning Stage in Treatise Usage:
M.Baj.(sowerbyi z.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
33
Beginning Date:
170
Ending Stage in Treatise Usage:
M.Baj.(sowerbyi z.)
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
66
Ending Date:
169.1
Description
Dwarf, with lappets and nearly straight ribs
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Hildocerataceae
Family:
Graphoceratidae
Subfamily:
Graphoceratinae
Formal Genus Name and Reference:
Darellella BUCKMAN, 1904
Type Species:
D. recticostata
Images
(Click to enlarge in a new window)
Fig. 300,2. *D. recticostata, 2 a, b, X1 (595*)
Synonyms
Geographic Distribution
Eng.
Age Range
Beginning Stage in Treatise Usage:
M.Baj.(sowerbyi z.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
33
Beginning Date:
170
Ending Stage in Treatise Usage:
M.Baj.(sowerbyi z.)
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
66
Ending Date:
169.1
Description
Dwarf, with lappets and nearly straight ribs