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Sieberella
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Pentamerida
Suborder:
Pentameridina
Superfamily:
Gypiduloidea
Family:
Gypidulidae
Subfamily:
Gypidulinae
Formal Genus Name and Reference:
Sieberella OEHLERT, 1887a, p. 1311
Type Species:
Pentamerus sieberi von Buch in BARRANDE, 1847, p. 465, OD
Images
(Click to enlarge in a new window)
Fig. 685, 3a-d. * S. sieberi (von Buch), Koneprusy Limestone, Prague region, Czech Republic, a-c, ventral, dorsal, anterior views, x1, d, serial section at 7.9 mm from ventral valve beak, x2 (Amsden, 1965).
Synonyms
Geographic Distribution
widespread in Europe, North America, North Africa, Kazakhstan, Tian Shan, Salair, Urals, Vietnam
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Medium size, ventribiconvex, costate shells, outline typically transverse, subellipsoidal, less commonly rounded, costae simple, strongly angular in cross section, covering entire shell or restricted to anterior half, V-shaped interspaces separating costae, inner hinge plates variably united to form cruralium or even low median septum, ventral median septum absent or low
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Pentamerida
Suborder:
Pentameridina
Superfamily:
Gypiduloidea
Family:
Gypidulidae
Subfamily:
Gypidulinae
Formal Genus Name and Reference:
Sieberella OEHLERT, 1887a, p. 1311
Type Species:
Pentamerus sieberi von Buch in BARRANDE, 1847, p. 465, OD
Images
(Click to enlarge in a new window)
Fig. 685, 3a-d. * S. sieberi (von Buch), Koneprusy Limestone, Prague region, Czech Republic, a-c, ventral, dorsal, anterior views, x1, d, serial section at 7.9 mm from ventral valve beak, x2 (Amsden, 1965).
Synonyms
Geographic Distribution
widespread in Europe, North America, North Africa, Kazakhstan, Tian Shan, Salair, Urals, Vietnam
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Medium size, ventribiconvex, costate shells, outline typically transverse, subellipsoidal, less commonly rounded, costae simple, strongly angular in cross section, covering entire shell or restricted to anterior half, V-shaped interspaces separating costae, inner hinge plates variably united to form cruralium or even low median septum, ventral median septum absent or low