Calcari ad aptici e Saccocoma Formation

The Calcari ad aptici e Saccocoma Formation,^[1] also known as the Saccocoma Formation (known in English as the Haptic limestones and Saccocoma Formation), is a geologic formation in Camponocecchio, Italy that dates back to the Tithonian (152 Ma) - it was first identified in 1976/1980,^[2][3] and was named in 2002.^[1] It was probably a marine shale due to the fossil content.^[4] Fossils found there include ammonites, cnidarians and the ichthyosaur Gengasaurus, discovered in 1976.^[5] Many of the fossils found in this formation are housed at the Spaelaeo-Palaeontologic Museum in Genga.

Calcari ad aptici e Saccocoma Formation
Stratigraphic range: Tithonian, 152 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Group
Unit of	'Calcari Diasprigni'
Thickness	Up to 30 metres (98 ft)
Lithology
Primary	Limestone and sandstone
Other	Chert
Location
Region	Marche
Country	Italy
Extent	Camponocecchio and Genga
Type section
Named by	Fabio Galluzzo & Massimo Santantonio (2002)[1]
Location	Camponocecchio
Year defined	1976/1980[2]

Paleofauna

Indeterminate ammonites and cnidarians are known from the formation.^[5]

• Gengasaurus nicosiai^[5]
• Kobya monteneronensis^[6]