Cyclasteropinae Poulsen 1965

Kornicker, Louis S., Van, Barry W. M., Bakel, Fraaije, René H. B. & Jagt, John W. M., 2006, Revision of Mesozoic Myodocopina (Ostracoda) and a new genus and species, Mesoleberis hollandica, from the Upper Cretaceous of Belgium and The Netherlands, Zootaxa 1246, pp. 15-54 : 22

Subfamily Cyclasteropinae Poulsen 1965

Composition

This subfamily contains three fossil genera: 1, Eocypridina Kesling & Ploch 1960 ( Kornicker & Sohn 2000:28, Wilkinson et al. 2004:191) with species in the Paleozoic; 2, Juraleberis Vannier & Siveter 1995, with a single species in the Upper Jurassic, and 3, the Late Cretaceous Mesoleberis , new genus, with the type species only. The subfamily also comprises six extant genera: Cyclasterope Brady 1897 , Cycloleberis Skogsberg 1920 , Leuroleberis Kornicker 1981 , Alphaleberis Kornicker 1981 , Tetraleberis Kornicker 1981 , and Amboleberis Kornicker 1981 , each genus containing several species. Extant genera are placed in three tribes: Cyclasteropini Poulsen 1965, Cycloleberidini Hartmann 1974, and Tetraleberidini Kornicker 1981. The tribes are defined by differences in the appendages.

Diagnosis

Carapace usually oval in adult females and juveniles, elongate in adult males; fairly deep incisure below rostrum; posterior margin evenly rounded; adductor muscle scars elongate, oval, and often forming a spiral; scars numerous and radiate in Mesozoic species. Gills present on body.

Range

Paleozoic to uppermost Cretaceous, and Recent (not reported from the Tertiary).