Fossil Record 5(1): 105-120, doi: 10.1002/mmng.20020050108
Atractocybeloides, eine kleinwüchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden
H.-H. Krueger‡‡ Institut für Paläontologie, Museum für Naturkunde der Humboldt-Universität zu Berlin, Invalidenstraße 43, 10115 Berlin, Germany
© H.-H. Krueger. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Citation:
Krueger H-H (2002) Atractocybeloides, eine kleinwüchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden. Fossil Record 5(1): 105-120. https://doi.org/10.1002/mmng.20020050108 |  |
Abstract
Aus mittel- bis oberordovizischen Geschieben werden fünf Taxa der kleinwüchsigen Trilobitengattung Atractocybeloides vorgestellt, davon die beiden neuen Arten Atractocybeloides nebeni n. sp. und Atractocybeloides oepiki n. sp. Die Gattung wurde 1991 an Fragmenten aufgestellt. Sie hat sich in der Aseri-Stufe aus Cybele entwickelt. Neue Funde und das reichhaltige Material aus der Sammlung Rhebergen, in der auch fast vollständige Panzerhemden von A. berneri enthalten sind, ermöglichten eine Rekonstruktion. Weiterhin wird die aus Norwegen beschriebene Art Atractopyge gracilis der Gattung Atractocybeloides zugeordnet. Große Ähnlichkeiten bestehen zur ungefähr gleichaltrigen nordamerikanischen kleinwüchsigen Gattung Cybeloides.
Five taxa of the small trilobite genus Atractocybeloides are presented from Middle to Late Ordovician erratic boulders, including the new species Atractocybeloides nebeni n. sp. and Atractocybeloides oepiki n. sp. The genus was errected in 1991 on the basis of fragmentary material. It evolved from Cybele during Aseri-zone times. A reconstruction is made possible due to new finds and the rich material from the Rhebergen collection, including nearly complete cuticles of A. berneri. Furthermore, Atractopyge gracilis from Norway is assigned to Atractocybeloides. Strong similarities exist to the roughly coeval, small trilobite genus Cybeloides, which is known from North America.
doi:10.1002/mmng.20020050108
Five taxa of the small trilobite genus Atractocybeloides are presented from Middle to Late Ordovician erratic boulders, including the new species Atractocybeloides nebeni n. sp. and Atractocybeloides oepiki n. sp. The genus was errected in 1991 on the basis of fragmentary material. It evolved from Cybele during Aseri-zone times. A reconstruction is made possible due to new finds and the rich material from the Rhebergen collection, including nearly complete cuticles of A. berneri. Furthermore, Atractopyge gracilis from Norway is assigned to Atractocybeloides. Strong similarities exist to the roughly coeval, small trilobite genus Cybeloides, which is known from North America.
doi:10.1002/mmng.20020050108