| Scanilepis Temporal range: Rhaetian-Hettangian~ | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Scanilepiformes |
| Family: | †ScanilepididaeAldinger, 1935 |
| Genus: | †ScanilepisAldinger, 1935 |
| Type species | |
| †Gyrolepis dubius Woodward, 1893 | |
| Other species | |
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| Synonyms | |
Scanilepis is an extinctgenus of prehistoric bony fish that lived during the Rhaetian-?Hettangianages (Late Triassic-?Lower Jurassic boundary). The type species, S. dubia, is known from the Rhaetian freshwater deposits of the Bjuv member of the Höganäs Formation, southwestern Sweden.[3] A second species, S. spitzbergensis was mentioned from the Hettangian of the Festning section of the Grøfjorden area in Spitsbergen, Norway[4][5] but was never described.[1]
The original material of this genus, described by Aldinger in 1937, was destroyed during WW2 in Germany. Latter, new material was recovered from Bjuv locality, including skull and postcraneal material.[3] This taxon represents a relatively large fish, up to 110 cm, with an isolated isolated caudal suggesting a fish of at least 2 m. The head presents unusual relative small eyes and a correlative maxilla with very large posterior plate and bony craneal top.[3] This taxon presents a relatively elongated bodyplan with an odd dorsal fin, exceptionally long, beginning behind the head and reaching the caudal. Pectoral fins weren't found, and are assumed to be small and only played a reduced role.[3]
この魚は当初、 Gyrolepis dubiusとしてGyrolepis属の一員として同定されましたが、後に独自の属 ( Scanilepis ) および科( Scanilepididae ) に割り当てられ、[ 4 ] Palaeonisciformesの一員として分類されました。[ 5 ]後期の研究では、 Amiidae科の起源に近い分類群として位置づけられましたが、後に独自の目であるScanilepiformesに属し、 Evenkia属と近縁であることが判明しました。[ 6 ]鱗の微細構造に関して、Scanilepis は他のどの属よりもPolypterusまたはErpetoichthysの状態に近いです。 [ 7 ]