Home Plot Diversity Curves Tree of Life About Admin Login

Welcome to the Treatise on Invertebrate Paleontology!

Please enter a genera name to retrieve more information.

Search By:
and Class
and Order

Undispirifer

Classification

    Phylum:  
Brachiopoda
    Class:  
Rhynchonellata
    Order:  
Spiriferida
    Superfamily:  
Reticularioidea
    Family:  
Reticulariidae
    Formal Genus Name and Reference:  
Undispirifer HAVLÍCEK , 1957b, p. 439. [The genus Undispirifer is here accepted with a broad definition, awaiting revision of the undispiriferoid stock(s), especially interiors, in Germany and immediate environs. ?Gerolsteinites STRUVE , 1990, was diagnosed as having stronger ribs and a narrower ventral interarea than Undispirifer. After revision it might be revived as a subgenus of Undispirifer, or it could be a synonym of the genus Corylispirifer GOURVENNEC, 1989, to which it is also similar.]
    Type Species:  
Spirifer undiferus ROEMER, 1844, p. 73; OD


Images

(Click to enlarge in a new window)
Fig. 1230a–f. *U. undiferus (R OEMER ); dorsal, ventral, anterior, lateral views, lower Givetian, Moravia, Czech Republic, ×1.8 (new); e, posterior view of internal mold, Givetian, Eifel, Germany, ×1.5; f, ornament, Givetian, Eifel, Germany, ×5 (Johnson, 1974).


Synonyms

Nakazatothyris, ?Gerolsteinites


Geographic Distribution

Cosmopolitan


Age Range

    Beginning Stage in Treatise Usage:  
Lower Devonian (upper Pragian)
    Beginning International Stage:  
Pragian
    Fraction Up In Beginning Stage:  
50
    Beginning Date:  
411.46
    Ending Stage in Treatise Usage:  
Upper Devonian (Frasnian)
    Ending International Stage:  
Frasnian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
371.1


Description

Medium to large size, transverse, with catacline to apsacline interarea and rounded cardinal extremities; narrow, well-developed fold and sulcus; flanks with 5 to 8 low plications; microornament of concentric growth lamellae and marginal spines; dental plates long; crural plates short or lacking; ctenophoridium present.




References



Museum or Author Information