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Homaletarhynchia, Simon & Owen, 2001 - a genus transferred to the Basiliolidae (Pugnacoidea, Rhynchonellida, Brachiopoda)
Motchurova-Dekova, N.; Simon, E. (2007). Homaletarhynchia, Simon & Owen, 2001 - a genus transferred to the Basiliolidae (Pugnacoidea, Rhynchonellida, Brachiopoda). Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 77: 117-129
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
Peer reviewed article  

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Keywords
    Cretaceous, Upper; Taxonomy; Brachiopoda [WoRMS]; Homaletarhynchia; Rhynchonellida [WoRMS]; Marine
Author keywords
    Upper Cretaceous, Brachiopoda, Rhynchonellida, Homaletarhynchia, subfalciform crura, shell ultrastructure.

Authors  Top 
  • Motchurova-Dekova, N.
  • Simon, E., more

Abstract
    The brachiopod rhynchonellide subgenus Cretirhynchia (Homaletarhynchia) SIMON & OWEN, 2001 is removed from the late Cretaceous genus Cretirhynchia PETTITT, 1950 and elevated to a genus level. On the basis of comprehensive revision of the internal morphology of the type species Terebratulites limbatus VON SCHLOTHEIM, 1813 by using serial sections, excavations of the umbonal part and investigations of the shell ultrastructure, Homaletarhynchia is now placed in the family Basiliolidae, superfamily Pugnacoidea. For the first time in rhynchonellide taxonomy the peculiarities of the shell ultrastructure were used to distinguish the representatives of a new genus, removed from another one, in which they were originally placed by the founder of the genus, when the serial sections were not informative enough and before revealing the internal morphology in detail by excavation.

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