Ostenoteuthidae is an extinct family of cephalopods from Lower

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

of Italy. They had ten arms with unusual structure. Both known species are from Lower

Sinemurian In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.3 ± 2 Ma and 190.8 ± 1.5 Ma (million years ago). The Sinemurian is preceded by the Hettangian and is ...

. The type locality for up to date known two species is near village

Osteno Claino con Osteno ( Comasco: ) is a ''comune'' (municipality) in the Province of Como in the Italian region of Lombardy, located about north of Milan and about north of Como. It is a small ''comune'' on Lake Lugano, composed of a series of sm ...

Lake Lugano __NOTOC__ Lake Lugano ( it, Lago di Lugano or , from la, Ceresius lacus; lmo, Lagh de Lugan) is a glacial lake which is situated on the border between southern Switzerland and northern Italy. The lake, named after the city of Lugano, is situated ...

Province of Como The Province of Como ( it, Provincia di Como; german: Provinz Como; Comasco: ) is a province in the north of the Lombardy region of Italy and borders the Swiss cantons of Ticino and Grigioni to the North, the Italian provinces of Sondrio and Le ...

northern Italy Northern Italy ( it, Italia settentrionale, it, Nord Italia, label=none, it, Alta Italia, label=none or just it, Nord, label=none) is a geographical and cultural region in the northern part of Italy. It consists of eight administrative regions ...

. Eight specimens from this family are stored in

Museo Civico di Storia Naturale di Milano The Museo Civico di Storia Naturale di Milano (Milan Natural History Museum) is a museum in Milan, Italy. It was founded in 1838 when naturalist Giuseppe de Cristoforis donated his collections to the city. Its first director was Giorgio Jan. ...

in Milan, Italy.

Genera

* '' Ostenoteuthis'' Garassino & Donovan, 2000 ** '' Ostenoteuthis siroi'' Garassino & Donovan, 2000 - from Lower

.
photo
* '' Uncinoteuthis'' Garassino & Donovan, 2000 ** '' Uncinoteuthis cuvieri'' Garassino & Donovan, 2000 - from Lower

References

Prehistoric cephalopod families Prehistoric animals of Europe Jurassic cephalopods Sinemurian first appearances Early Jurassic extinctions {{Paleo-cephalopod-stub