|Upper Triassic to Lower Jura|
|215 to 164.7 million years|
|Leach , 1822|
William Elford Leach published the first description of the genus in 1822 with the type species D. politum from the early Lower Jurassic (lower Lias) by Lyme Regis ( Jurassic Coast ). In 1983 Tintori described the species D. raetium from the Upper Triassic of Lombardy .
The body is strongly flattened and stocky at the sides, the skin covered with thick, rhombic ganoid scales. Depending on the species, the animal can reach a length of 10 to 40 cm. The skull is armored with bumpy plates of bone, especially many-limbed in the orbital region . The pectoral and ventral fins are small, the dorsal and anal fins are long.
Habitat and way of life
Dapedium lived in the European Jurassic Sea , a shelf and marginal sea of the Tethys . The conical dentition suggests that dapedium is similar to the recent sea bream (Sparidae) , which has a similar body shape, from wired invertebrates , e.g. B. mussels or sea urchins, fed.
Dapedium is the best-researched species of the Dapedidae family, originally assigned to the Semionotiformes . Recently the family has been classified in its own order (Dapediiformes) at the base of the bone organoids (Holostei).
- Detlev Thies, Annette Herzog: New information on † Dapedium LEACH 1822 (Actinopterygii, † Semionotiformes). In: Gloria Arratia, Hans-Peter Schultze (Ed.): Mesozoic Fishes. Volume 2: Systematics and Fossil Record. Pfeil, Munich 1999, ISBN 3-931516-48-2 , pp. 143-152.
- Fiann M. Smithwick. Feeding ecology of the deep-bodied fish Dapedium (Actinopterygii, Neopterygii) from the Sinemurian of Dorset, England. Palaeontology, 2015; DOI: 10.1111 / pala.12145
- Adriana López-Arbarello, Emilia Sferco: Neopterygian phylogeny: the merger assay. Royal Society Open Science, 21 March 2018. DOI: 10.1098 / rsos.172337