|(CH 1903)||E 724913||N 96714||H 340.0|
|(WGS 84)||Long. 9.051||Lat. 46.010|
In 1964, paleontologist Giovanni Pinna discovered a fossil deposit in which special paleoenvironmental conditions had allowed a particular, almost perfect, fossilization of not only rigid structures (exoskeletons) but also of the soft body parts of many organisms. The stratigraphic level in question emerges near the Quaglietto Quarry of Osteno, and then crosses above the town and continues on to Porto Franco near three contiguous cavities. Made up of a six-metre-thick lens, the interior of the formation of Moltrasio Limestone (Early Jurassic – circa 190 million years ago) has attracted numerous excavations which have allowed the recognition and classification of different species of marine fauna (vertebrates and invertebrates) and many plants. The find which made this deposit famous was the discovery of complete specimens of a new class of Tilacocefali with characteristics similar to crustaceans and identified by paleontologists as the Ostenocaris Cypriformis in honor of the locality of its recognition.
The site is accessible only by boat. The former quarry area is very dangerous and is not recommended for access.
Museo val Sanagra
Museo Civico di Storia Naturale di Milano
Museo dei fossili intelvesi