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

Tomiopsis

Classification

    Phylum:  
Brachiopoda
    Subphylum:  
Rhynchonelliformea
    Class:  
Rhynchonellata
    Order:  
Spiriferida
    Suborder:  
Spiriferina
    Superfamily:  
Martinioidea
    Family:  
Ingelarellidae
    Subfamily:  
Ingelarellinae
    Formal Genus Name and Reference:  
Tomiopsis Benediktova, 1956, p. 169, nom. conserv. ICZN Opinion 1395, 1986, p. 146, non Tomiopsis COPE, 1893, p. 317
    Type Species:  
Brachythyris kumpani YANISHEVSKY, 1935, p. 68, OD


Images

(Click to enlarge in a new window)

Fossil Image
Fig. 1158, 3a-c. * T. kumpani (Yanishevsky), upper Visean or Namurian, Kuznets basin, a-b, spalled ventral exterior and dorsal internal mold showing median septum, X1, c, microornament of external mold, X10"


Synonyms

Danzania


Geographic Distribution

Russia, Asia


Age Range

    Beginning Stage in Treatise Usage:  
Carboniferous (Visean)
    Beginning International Stage:  
Visean
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
346.73
    Ending Stage in Treatise Usage:  
Permian (Lopingian)
    Ending International Stage:  
Changhsingian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
251.9


Description

Small to medium size, outline transversely to longitudinally rounded, fold and sulcus usually developed, sulcus, when present, rounded or sometimes with 1 or 2 weak plicae, lateral slopes smooth or more commonly with several low, wide, simple plications, anterior commissure rectimarginate to uniplicate, rarely parasulcate, ventral interior with subparallel dental adminicula enclosing moderately impressed muscle field, dorsal interior with short to long subparallel dorsal adminicula and short to moderately long, stout median septum, microornament consisting of fine, simple, elongate, narrow grooves crudely to symmetrically arranged in quincunx.




References



Museum or Author Information

T