Contribution
Sinemurian ammonites from Male Karpaty Mts, Western Carpathians, Slovakia. Part 3: Asteroceratinae, Eoderoceratidae, Oxynoticeratidae and rare taxa
Meister, Christian; Schlögl, Jan
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 294 Heft 1 (2019), p. 1 - 69
114 références bibliographiques
publié: Oct 25, 2019
manuscrit accepté: Jul 19, 2019
manuscrit reçu: Jan 22, 2019
ArtNo. ESP155029401000, Prix: 29.00 €
Abstract
Third study of the extremely rich ammonite fauna from the Chtelnica condensed section mainly includes numerous representatives of families Asteroceratinae and Eoderoceratidae. These are accompanied by far less numerous Oxynoticeratidae, Echioceratidae and Hypasteroceratinae. Ammonites of the subfamily Asteroceratinae are relatively scarce in Bed 4 but are the essential part of the association of Bed 5. Asteroceratinae of the Bed 4 include Caenisites and Carpathiceras gen. nov. Bed 5 contains Asteroceras, Eparietites and Epophioceras. Eoderoceratidae are represented by Microderoceras, Xipheroceras and Promicroceras. Echioceratidae include Tmaegophioceras, Hypasteroceratinae are represented by Hypasteroceras and Oxynoticeratidae by Oxynoticeras. For a peculiar form with an intermediate morphology between Arietitidae and Oxynoticeratidae, Chtelnicaceras nov. gen. is introduced here. The age range of the condensed Bed 4 is from the middle–late Bucklandi Chronozone to Turneri Chronozone. The age range of Bed 5 is emended here, representing the Obtusum to early Raricostatum Chronozone.
Mots-clefs
Ammonites • taxonomy • Lower Jurassic • Sinemurian • Western Carpathians • Slovakia