Thrissops formosus AGASSIZ, 1833

Taxonomy

Kingdom: Animalia
Phylum: Chordata
Class: Actinopteri Cope 1871
Order: Ichthyodectiformes Bardack and Sprinkle 1969
Family: Ichthyodectidae Crook 1892
Genus: Thrissops
Species: Thrissops formosus
Author Citation AGASSIZ, 1833

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Jurassic
Sub Period: None
Epoch: Late
International Age: Tithonian

Stratigraphy

Weissjura Group
Solnhofen Formation

Biostratigraphy

Hybonoticeras hybonotum Zone
Lithacoceras riedense Subzone

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 41 cm

Location

Bieswang
District of Eichstätt
Bavaria
Germany

• jurassic
• solnhofen
• tff-oilshale-ch11
• thrissops
• tithonian

Comments

Thrissops formosus, a member of the family Ichthyodectidae (literally "fish-biters"), was a swift-swimming predatory fish with streamlined body and deeply clefted caudal fin from the Lithographic Limestone deposits around Solnhofen, Germany. Dorsal and anal fins are broad based and attached behind the body's midpoint. The anal fin is diagonally attached slightly before the dorsal fin.

References:
L. Cavin, P. L. Forey, and S. Giersch (2013) Osteology of Eubiodectes libanicus (Pictet & Humbert, ) and some other ichthyodectiformes (Teleostei): phylogenetic implications. Journal of Systematic Palaeontology 11(2):115-177.