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Kerpina
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Atrypida
Suborder:
Atrypidina
Superfamily:
Atrypoidea
Family:
Atrypidae
Subfamily:
Invertininae
Formal Genus Name and Reference:
Kerpina STRUVE, 1961, p. 333
Type Species:
K. vineta vineta, OD
Images
(Click to enlarge in a new window)
Fig. 950, 2a-i. * K. vineta vineta, upper Eifelian, Germany, a-c, dorsal, ventral, lateral views, x2, d, enlarged detail ornament, x8, e, specimen fixed to alveolitid coral, x2, f-i, serial sections, x4 (Copper, 1967e).
Synonyms
Adaptatrypa
Geographic Distribution
western Europe, Urals (western slopes)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Beginning International Stage:
Emsian
Fraction Up In Beginning Stage:
66
Beginning Date:
399.81
Ending Stage in Treatise Usage:
Middle Devonian (Eifelian, ?lower Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
35
Ending Date:
383.06
Description
Small to medium, usually with asymmetric growth (commonly fixosessile), variable convexity from ventribiconvex-concavoconvex, proportionally large, very wide, sharp edged, often twisted, procline-orthocline area, large apical foramen, relatively wide deltidial plates, fine to medium tubular-imbricate ribs, overlapping, short growth lamellae, rectimarginate to weakly plicate commissure, pedicle collar conjunct to thick deltidial plates, teeth solid, lacking dental cavities, spiralia dorsomedial, with fewer than 8 whorls, jugal processes curved together in V-shape, tipped by jugal plates. [Possibly synonymous with Falsatrypa, but brachidia for Falsatrypa undescribed.]
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Atrypida
Suborder:
Atrypidina
Superfamily:
Atrypoidea
Family:
Atrypidae
Subfamily:
Invertininae
Formal Genus Name and Reference:
Kerpina STRUVE, 1961, p. 333
Type Species:
K. vineta vineta, OD
Images
(Click to enlarge in a new window)
Fig. 950, 2a-i. * K. vineta vineta, upper Eifelian, Germany, a-c, dorsal, ventral, lateral views, x2, d, enlarged detail ornament, x8, e, specimen fixed to alveolitid coral, x2, f-i, serial sections, x4 (Copper, 1967e).
Synonyms
Adaptatrypa
Geographic Distribution
western Europe, Urals (western slopes)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Beginning International Stage:
Emsian
Fraction Up In Beginning Stage:
66
Beginning Date:
399.81
Ending Stage in Treatise Usage:
Middle Devonian (Eifelian, ?lower Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
35
Ending Date:
383.06
Description
Small to medium, usually with asymmetric growth (commonly fixosessile), variable convexity from ventribiconvex-concavoconvex, proportionally large, very wide, sharp edged, often twisted, procline-orthocline area, large apical foramen, relatively wide deltidial plates, fine to medium tubular-imbricate ribs, overlapping, short growth lamellae, rectimarginate to weakly plicate commissure, pedicle collar conjunct to thick deltidial plates, teeth solid, lacking dental cavities, spiralia dorsomedial, with fewer than 8 whorls, jugal processes curved together in V-shape, tipped by jugal plates. [Possibly synonymous with Falsatrypa, but brachidia for Falsatrypa undescribed.]