Ittiri, facies A (Miocene of Italy)

Also known as Ittiri-A

Where: Sardinia, Italy (40.6° N, 8.5° E: paleocoordinates 42.5° N, 4.3° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Marne di Borutta Formation, Middle Miocene (16.0 - 11.6 Ma)

• "The Ittiri Section (Fig. 3B) consists of approximately 5 m of sandy sediments within the Marne di Borutta Formation."

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; sandstone

• "moderate- to low-energy sublittoral environment"
• "Facies Ittiri-A is composed of a meter of fine, massive sandstone with very abundant calcareous algae remains that form 30% of the rock. Macrofossils are very abundant and include the irregular echinoids Clypeaster and Echinolampas and densely packed pectinid and oyster shells, without preferred orientation. When overlain by Facies Ittiri-B, contact is sharp."

Size classes: macrofossils, mesofossils

Collection methods: bulk,

Primary reference: A. Mancosu and J. H. Nebelsick. 2015. The origin and paleoecology of clypeasteroid assemblages from different shelf settings of the Miocene of Sardinia, Italy. Palaios 30(5):373-387 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 187332: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 21.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only burrowing echinoids (mostly clypeasteroids) described.
 Ostreiformii -
Pectinida indet. Gray 1854 scallop
 Ostreida -
Ostreoidea indet. Rafinesque 1815 oyster
"oyster shells"
 Echinolampadoida - Echinolampadidae
Echinolampas sp. Gray 1825 sea urchin
 Clypeasteroida - Clypeasteridae
Clypeaster sp. Lamarck 1801 sand dollar