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Fossils and especially fishes in the Upper Bunter Formation in Germany are quite rare. But occasionally you can find fish gatherings. In the mid '60ties, almost 60 of these Pericentrophorus minimus were found together with nearly 200 of these strange looking Dipteronotus aculeatus (JÖRG, 1969) in a small clay lens, just 10m in diameter and 30cm thick. Diagnosis from Jörg, 1969, p. 94 (translated from german by oilshale): "Body low spindle-shaped, with almost straight dorsum. Dorsal line slightly depressed below dorsalis. Fin position as in genus Acentrophorus TRAQUAIR. Maxillary shortened, but still extending far back under orbit almost to its posterior margin. Teeth pencil-shaped, small, parietalia proportionally long. Opercular apparatus well developed, with narrow, strongly curved and below somewhat anteriorly curved praeoperculum. Caudalis almost symmetrical, weakly indented. Along dorsum runs a row of short, bluntly domed ridge scales, posterior margins concave. Anterior flank scales twice as high as wide. Scaling of upper caudal lobe reduced posteriorly to a single row of scales covering lobe about half its length." Line drawing from Jörg 1969, p. 96: Identified by oilshale using Jörg 1969. References: Jörg, E. (1969) Fischfunde im Oberen Buntsandstein (Untertrias) von Karlsruhe-Durlach. Zeitschrift der Deutschen Geologischen Gesellschaft Band 121 (1969), p. 105 - 110. Jörg, E. (1969): Eine Fischfauna aus dem Oberen Buntsandstein Unter-Trias von Karlsruhe-Durlach Norbaden. Beitraege zur Naturkundlichen Forschung in Suedwestdeutschland, 28: 87-102. Gall, JC.; Grauvogel, L.; Lehman, JP.(1974): Faune du Buntsandstein. 5. Les poissons fossiles de la collection Grauvogel - Gall. Annales Paleont (Vert): 602: 127-168
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- tff-oilshale-ch1198
- pericentrophorus
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This fish was first described under the name Praesemionotus aculeatus JÖRG, 1969 Taxonomy from Fossilworks.org. Diagnosis for the genus from Tintori 1990, p. 194: "Small high-bodied fish with the dorsal crest made up by ll ridge scales; maximum height of the body (crest excluded) equal to 54% of the s.l.: head length equal to 36% of s.l.; dorsal fin consisting of 22 lepidotrichia, caudal of 26 (at least 6 of which are epaxial) and anal of 15 lepidotrichia; trunk scales with a backward directed spine at the center of their posterior edge." Reconstruction of D. olgiatii TINTORI, 1990 Identified by oilshale using Jörg 1969. References: Jörg, E. (1969) Fischfunde im Oberen Buntsandstein (Untertrias) von Karlsruhe-Durlach. Zeitschrift der Deutschen Geologischen Gesellschaft Band 121 (1969), p. 105 - 110. Jörg, E. (1969): Eine Fischfauna aus dem Oberen Buntsandstein Unter-Trias von Karlsruhe-Durlach Norbaden. Beitraege zur Naturkundlichen Forschung in Suedwestdeutschland, 28: 87-102 Gall, JC.; Grauvogel, L.; Lehman, JP.(1974): Faune du Buntsandstein. 5. Les poissons fossiles de la collection Grauvogel - Gall. Annales Paleont (Vert): 602: 127-168 Tintori, A. (1990): DIPTERONOTUS OLGIATII N. SP. (ACTINOPTERYGII, PERLEIDIFORMES) FROM THE KALKSCHIEFERZONE OF CA' DEL FRATE (N. ITALY) (Preliminary note). Atti. Tic. Sc. Terra, 33 (1990), 191-197,2figg., 1 pl.
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- dipteronotus
- bunter
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