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Girtypecten

Classification

    Phylum:  
Mollusca
    Class:  
Bivalvia
    Subclass:  
Pteriomorphia
    Order:  
Pterioida
    Suborder:  
Pteriina
    Superfamily:  
Pectinacea (scallops and relatives)
    Family:  
Aviculopectinidae
    Subfamily:  
Aviculopectininae
    Formal Genus Name and Reference:  
Girtypecten NEWELL, 1938, p. 77
    Type Species:  
*Aviculopecten sublaqueatus GIRTY, 1908, p. 440, OD


Images

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Fossil Image
Fig. C61,6. *G. sublaqueatus (Girty), Tex., LV ext., X2 (Newell, n)


Synonyms



Geographic Distribution

USA(Tex.-Wyo.)


Age Range

    Beginning Stage in Treatise Usage:  
Perm.(Guadalup.)
    Beginning International Stage:  
Roadian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
274.37
    Ending Stage in Treatise Usage:  
Perm.(Guadalup.)
    Ending International Stage:  
Capitanian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
259.55


Description

Suborbicular shells ornamented with coarse, widely spaced costae intersected by similarly spaced concentric ridges, cylindrical, erect spines from intersections of radial and concentric ornamentation




References



Museum or Author Information