Leptolepis gregarious Woodward, 1895.Late Jurassic.Merrygoen Ironstone, Purlawaugh Formation. Farrs Hill, Uarbry. New South Wales.Australia

Leptolepis gregarious is now understood to be a juvenile Cavenderichthys

On 1/16/2021 at 8:37 AM, rodrex said:

Leptolepis gregarious is now understood to be a juvenile Cavenderichthys

 

No it isn't ,sorry it's a real high grade specialist ID ,no doubt on it 

On 1/15/2021 at 11:37 PM, rodrex said:

Leptolepis gregarious is now understood to be a juvenile Cavenderichthys

 

Correct.

Further examination during the current study of the bones of L. gregarius demonstrates it is just a schooling, juvenile form of talbragarensis. Woodward describes L. gregarius as having a different proportion of the head, and the anal fin being slightly more anterior, but these characteristics are not supported by a statistical analysis of the dimensions...

...The leptolepids represent a population with a preponderance of young individuals, but also with a representative sample of older individuals. Woodward's Leptolepis gregarius is the juvenile form of C. talbragarensis, while L. lowei, in which the head appears to be elongated, is an artefact of preservation.

Bean, L.B. 2006. The leptolepid fish Cavenderichthys talbragarensis (Woodward, 1895) from the Talbragar Fish Bed (Late Jurassic) near Gulgong, New South Wales.

Records of the Western Australian Museum, 23(1)43-76  PDF LINK