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Mammites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Acanthocerataceae
Family:
Acanthoceratidae
Formal Genus Name and Reference:
Mammites Laube & BRUDER, 1887, p. 229
Type Species:
Ammonites nodosoides SchlÜter, 1871, p. 19, M (all 3 species described in Laube & Bruder, 1887, are believed to be synonymous, earliest type designation is ROMAN, 1938, p. 449)
Images
(Click to enlarge in a new window)
F IG . 134,a–d. *M. nodosoides (SCHLÜTER), Lower Turonian, Czech Republic; a,b, lectotype, × 0.4; c,d, topotype, × 0.4 (Wright & Kennedy, 1981).
Synonyms
Schluetericeras, M. nodosoides
Geographic Distribution
Upper Cretaceous (Lower Turonian-Upper Turonian)
Age Range
Beginning Stage in Treatise Usage:
Upper Cretaceous (Lower Turonian)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
Upper Cretaceous (Upper Turonian)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Inner whorls trapezoidal to almost rectangular or square, with moderate to very strong tuberculation, venter slightly concave, flat, or with slight siphonal ridge. Outer whorls with fewer tubercles and with inner and outer ventrolaterals fused, in most species, into large horns directed sideways or obliquely upward.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Acanthocerataceae
Family:
Acanthoceratidae
Formal Genus Name and Reference:
Mammites Laube & BRUDER, 1887, p. 229
Type Species:
Ammonites nodosoides SchlÜter, 1871, p. 19, M (all 3 species described in Laube & Bruder, 1887, are believed to be synonymous, earliest type designation is ROMAN, 1938, p. 449)
Images
(Click to enlarge in a new window)
F IG . 134,a–d. *M. nodosoides (SCHLÜTER), Lower Turonian, Czech Republic; a,b, lectotype, × 0.4; c,d, topotype, × 0.4 (Wright & Kennedy, 1981).
Synonyms
Schluetericeras, M. nodosoides
Geographic Distribution
Upper Cretaceous (Lower Turonian-Upper Turonian)
Age Range
Beginning Stage in Treatise Usage:
Upper Cretaceous (Lower Turonian)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
Upper Cretaceous (Upper Turonian)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Inner whorls trapezoidal to almost rectangular or square, with moderate to very strong tuberculation, venter slightly concave, flat, or with slight siphonal ridge. Outer whorls with fewer tubercles and with inner and outer ventrolaterals fused, in most species, into large horns directed sideways or obliquely upward.