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Kerpina

Classification

    Phylum:  
Brachiopoda
    Class:  
Rhynchonellata
    Order:  
Atrypida
    Superfamily:  
Atrypoidea
    Family:  
Atrypidae
    Formal Genus Name and Reference:  
Kerpina STRUVE, 1961, p. 333
    Type Species:  
K. vineta vineta, OD


Images

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Fossil Image
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

Copper, 1967