
An entirely new type of rhombic fish scales has been discovered by Dr. A. Martinsson, Uppsala, in the Middle Ludlovian Hemse Beds of Gotland. Their morphology, histology, and growth are described. The scale material is referred to a new genus and species, Andreolepis hedei. The majority of the morphological, histological, and morphogenetical characteristics match those of Devonian ganoid scales (Palaeonisciformes); however, the scales of the new genus have no ganoine layer. Some histological characteristics are reminiscent of the structure of the spines and scales of the Silurian acanthodian Nostolepis. Only with the discovery of more complete or intact specimens can the new genus be placed in its proper systematic position. Dr. A. Martinsson, Uppsala, entdeckte im oberen Silur Gotlands (Mittel Ludlow, Hemse-Schichten) bisher unbekannte, rhomboidische Fischschuppen, deren Morphologie, Histologic und Wachstum be-schrieben werden. Fur diese Schuppen wird die neue Gattung und Art Andreolepis hedei errichtet. Die Mehrzahl der morphologischen, histologischen und morphogenetischen Merkmale gleicht denen de-vonischer Ganoidschuppen (Palaeonisciformes), jedoch fehlt den Schuppen der neuen Gattung eine Ganoinschicht. Manche histologischen Merkmale erinnern an den Bau der Stacheln und Schuppen des silurischen Acanthodiers Nostolepis. Erst die Entdeckung zusammenhang-ender Reste oder intakter Fische kann die Frage klaren, welche Stellung im System der Fische die neue Gattung einzunehmen hat.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 65 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
