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Protobactrites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Orthocerida
Superfamily:
Orthocerida - Superfamily and Family uncertain
Formal Genus Name and Reference:
Protobactrites Hyatt in ZITTEL, 1900, p. 518
Type Species:
Orthoceras styloideum BARRANDE, 1866, pl. 365, OD
Images
(Click to enlarge in a new window)
Fig. 186, 1. *P. styloideum (Barrande), M.Sil., Czech., 1a,b, lat. view, transv. sec., x1 (5)
Synonyms
Protobactolites
Geographic Distribution
USA (Ohio), Eu. (Czech. - Sweden), USSR (Pskov)
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Long slender orthocones or faintly curved longicones of circular or subcircular cross section, Surface with transverse and in some species longitudinal striae, Siphuncle eccentric, structure unknown but possibly cylindrical in shape, Aperture oblique to long axis, natural truncation of shell may have taken place. [Genus is unrecognizable until internal information is available.]
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Orthocerida
Superfamily:
Orthocerida - Superfamily and Family uncertain
Formal Genus Name and Reference:
Protobactrites Hyatt in ZITTEL, 1900, p. 518
Type Species:
Orthoceras styloideum BARRANDE, 1866, pl. 365, OD
Images
(Click to enlarge in a new window)
Fig. 186, 1. *P. styloideum (Barrande), M.Sil., Czech., 1a,b, lat. view, transv. sec., x1 (5)
Synonyms
Protobactolites
Geographic Distribution
USA (Ohio), Eu. (Czech. - Sweden), USSR (Pskov)
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Long slender orthocones or faintly curved longicones of circular or subcircular cross section, Surface with transverse and in some species longitudinal striae, Siphuncle eccentric, structure unknown but possibly cylindrical in shape, Aperture oblique to long axis, natural truncation of shell may have taken place. [Genus is unrecognizable until internal information is available.]