Ostenoteuthidae

Ostenoteuthidae is an extinct family of cephalopods from Lower Jurassic of Italy. They had ten arms with unusual structure.^[1]

Ostenoteuthidae Temporal range: Sinemurian PreꞒ Ꞓ O S D C P T J K Pg N
The holotype of Ostenoteuthis siroi. Visible features include 10 arms, jaw, gladius, gills, displaced ink sac and lateral wing. (See notes on the image.)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Coleoidea
Order:	incertae sedis
Family:	†Ostenoteuthidae Garassino & Donovan, 2000[1]

Artist's reconstructions of Uncinoteuthis cuvieri and Ostenoteuthis siroi.

Both known species are from Lower Sinemurian.^[1]

The type locality for up to date known two species is near village Osteno, Lake Lugano, Province of Como, northern Italy.^[1] Eight specimens from this family are stored in Museo Civico di Storia Naturale di Milano in Milan, Italy.^[1]

Genera

• Ostenoteuthis Garassino & Donovan, 2000^[1]
  • Ostenoteuthis siroi Garassino & Donovan, 2000^[1] - from Lower Sinemurian.^[1] (photo)
• Uncinoteuthis Garassino & Donovan, 2000^[1]
  • Uncinoteuthis cuvieri Garassino & Donovan, 2000^[1] - from Lower Sinemurian.^[1]