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pro vyhledávání: '"Stefan Gräbenstein"'
Publikováno v:
Volumina Jurassica. 19:95-108
New material of the enigmatic cosmopolitan ammonite genus Tmaegoceras Hyatt, 1889 is reported from the upper Lower Sinemurian (Bucklandi Zone, ‛cf. pinguisʼ Biohorizon) of SW Germany. It is better preserved than previously described material. All
Publikováno v:
Volumina Jurassica. :37-46
The coarse-ribbed and big-sized Arietites solarium (Quenstedt, 1883) is one of the largest-grown and most iconic ammonite taxa in the entire Swabian Lower Jurassic; however, despite previous revisions including the designation of a lectotype, there h
Publikováno v:
Palaeodiversity. 14
The lithostratigraphy and ammonite biostratigraphy of the Middle Jurassic Opalinuston Formation in the Teufelsloch gorge at Bad Boll (middle Swabian Alb), which is the type locality of this formation and that of its lower member, the Teufelsloch Memb