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Lituites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Tarphycerida
Family:
Lituitidae
Formal Genus Name and Reference:
Lituites BERTRAND, 1763, p. 89
Type Species:
Orthocera lituus Modeer, 1796, p. 152, SM de MONTFORT, 1808, p. 279
Images
(Click to enlarge in a new window)
Fig. 266,1a-c. *L. lituus (MODEER); 1a, Pleist. drift, Eu.(Ger.), fully mature specimen, lat. view, X0.5 (227a); 1b, Llanvirn., Eu.(Sweden), long. sec. with cameral deposits, X1 (223a); 1c, M.Ord.(Llandeil.), Eu.(Norway), lat. view, X1 (178). -- Fig. 266, 1d-f. L. toernquisti HOLM, Llanvirn., Eu.(Sweden); apert. view (dorsum down), dorsal view, lat. view (venter on right) of fully mature body chamber, X1 (223a)
Synonyms
Hortolus, Spirulites, Lituites, Lithuites, Lituitus, Litulies
Geographic Distribution
Eu. (Balto-Scandia)
Age Range
Beginning Stage in Treatise Usage:
M.Ord. (Llanvirn.)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord. (Caradoc.)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Gradually expanded annulate conchs with whorls of spiral portion in contact or loosely coiled but not impressed dorsally; body chamber may equal or exceed length of weakly sigmoid orthoconic phragmocone; fully mature aperture characterized by pair of pronounced ventrolateral lappets and similar but shorter dorsolateral lappets; dorsal sinus generally divided by low salient; siphuncle subdorsal.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Tarphycerida
Family:
Lituitidae
Formal Genus Name and Reference:
Lituites BERTRAND, 1763, p. 89
Type Species:
Orthocera lituus Modeer, 1796, p. 152, SM de MONTFORT, 1808, p. 279
Images
(Click to enlarge in a new window)
Fig. 266,1a-c. *L. lituus (MODEER); 1a, Pleist. drift, Eu.(Ger.), fully mature specimen, lat. view, X0.5 (227a); 1b, Llanvirn., Eu.(Sweden), long. sec. with cameral deposits, X1 (223a); 1c, M.Ord.(Llandeil.), Eu.(Norway), lat. view, X1 (178). -- Fig. 266, 1d-f. L. toernquisti HOLM, Llanvirn., Eu.(Sweden); apert. view (dorsum down), dorsal view, lat. view (venter on right) of fully mature body chamber, X1 (223a)
Synonyms
Hortolus, Spirulites, Lituites, Lithuites, Lituitus, Litulies
Geographic Distribution
Eu. (Balto-Scandia)
Age Range
Beginning Stage in Treatise Usage:
M.Ord. (Llanvirn.)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord. (Caradoc.)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Gradually expanded annulate conchs with whorls of spiral portion in contact or loosely coiled but not impressed dorsally; body chamber may equal or exceed length of weakly sigmoid orthoconic phragmocone; fully mature aperture characterized by pair of pronounced ventrolateral lappets and similar but shorter dorsolateral lappets; dorsal sinus generally divided by low salient; siphuncle subdorsal.