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 Stage
and Class
and Order

Aksarinaia

Classification

    Phylum:  
Brachiopoda
    Class:  
Lingulata
    Order:  
Lingulida
    Superfamily:  
Linguloidea
    Family:  
Obolidae
    Formal Genus Name and Reference:  
Aksarinaia KONEVA, 1992, p. 92
    Type Species:  
A. triquetra, OD


Images

(Click to enlarge in a new window)

Fossil ImageFossil Image
Fig. 13, 3a-f. *A*. triquetra, Amgaian, Kyrshabakty River, $a$, ventral valve exterior, x13.8$, $b$, lateral view, x16.7$, $c$, larval shell, RMS Br 136344, x50$, d, oblique view of ventral interior, RMS Br 136345, x75$, e, dorsal valve interior, x3 3 . 3, } f$, oblique view of dorsal interior, RMS Br 136347, X66.7 (new)."


Synonyms



Geographic Distribution

Kazakhstan (Malyi Karatau), Russia (eastern Siberia)


Age Range

    Beginning Stage in Treatise Usage:  
Middle Cambrian
    Beginning International Stage:  
Wuliuan
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
509
    Ending Stage in Treatise Usage:  
Middle Cambrian
    Ending International Stage:  
Guzhangian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
497


Description

Shell subtriangular, flatly biconvex, pseudointerareas of both valves with flexure lines, ventral pseudointerarea orthocline with deep, subtriangular pedicle groove and strongly raised, narrow propareas, dorsal pseudointerarea moderately high, with broad median groove and narrow, elevated propareas, dorsal visceral area slightly thickened, extending anterior to midvalve, dorsal vascula media marginal, arcuate. Middle Cambrian: Kazakhstan (Malyi Karatau), Russia (eastern Siberia).




References



Museum or Author Information