A review of some Cretaceous and Tertiary serpulid polychaetes of the genera Cementula and Spiraserpula Regenhardt 1961,Laqueoserpula Lommerzheim 1979 andProtectoconorca JÄger 1983

Autor: T. Gottfried Pillai
Rok vydání: 1993
Předmět:
Zdroj: Paläontologische Zeitschrift. 67:69-88
ISSN: 1867-6812
0031-0220
DOI: 10.1007/bf02985871
Popis: The genus Cementula was proposed by Nielsen (1931) without designating a type species. Regenhardt (1961) made the name Cementula available by designating Cementula sphaerica Nielsen 1931 as its type. Regenhardt (1961) and Lommerzheim (1979) retain Cementula as a genus distinct from Spiraserpula Regenhardt 1961, while JAger (1983) synonymizes the latter with the former. Re-examination of their types, however, revealed an important additional character for retaining them as distinct genera, the presence of internal longitudinal ridges in Spiraserpula, which are absent in Cementula. Two other genera, Laqueoserpula Lommerzheim 1979 and Protectoconorca JAger 1983 were also examined, but they lack such internal tube structures. This study yielded an available name among fossil genera, namely, Spiraserpula Regenhardt 1961, for several living Serpula-like species with internal tube structures, to be described in a separate paper.
Databáze: OpenAIRE
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