Record details

    Notes on the evolution and higher classification of the subclass Neritimorpha (Gastropoda) with the description of some new taxa
Statement of responsibility
    Klaus Bandel, Jiří Frýda
    Bandel, Klaus
    Frýda, Jiří
Source title - serial
    Geologica et palaeontologica
    Vol. 33
    p. 219-235
    3 obr., 3 pl., 3 s.bibl.
    Německé resumé
    Zkr. název ser.: Geologica et Palaeont.
Subject group
    nový taxon
    pražská pánev
Abstract (in english)
   Neritimorpha represent a subclass of the Gastropoda that regarding its anatomy is close to the Archaeogastropoda, regarding its ontogeny it resembles more the Caenogastropoda. Ontogenetic development includes a larval phase during which a planktonic veliger may produce a larval shell. The members of the new order Cycloneritimorpha have a larval shell that is tightly coiled and rounded. The representative of the other new order Cyrtoneritimorpha have a hook-like openly coiled protoconch. Recognition of these two new taxa splits seemmingly well established Palaeozoic gastropod groups, like the Platyceratoidea which apparently are polyphytelic. The protoconch shape is evidence for teleoconch convergence between a Carboniferous Orthonychia amd the Triassic Pseudorthonychia n.gen. Neritimorpha existed from Ordovician onward first with the Cyrtoneritimorpha and later the still extant Cycloneritimorpha witn an overlap in time of occurrence from the Devonian to the Permian
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    29. 10. 2007
Import date
    8. 8. 2012