Bivio Macerino (dike C) (Jurassic of Italy)

Where: Central Italy , Italy (42.7° N, 12.6° E: paleocoordinates 30.1° N, 18.9° E)

• coordinate estimated from map

When: Stephanoceras humphriesianum ammonoid zone, Bajocian (170.3 - 168.3 Ma)

Environment/lithology: marine; lithified, coarse-grained breccia and lithified limestone

• The "C" dike shows an upward coarsening breccia

•at the base besides fossiliferous limestones.

•Some recrystallized stromatolites are interfingered

•within the fossiliferous limestones and the fossils,

•mainly the gastropods, are frequently covered by

•stromatolites.

Size class: macrofossils

Preservation: recrystallized

Collection methods: mechanical, peel or thin section,

Primary reference: M. A. Conti, S. Monari, and G. Pallini. 1986. A middle Jurassic bivalve and gastropod fauna from Umbria (Central Italy). Geologica Romana 23:175-215 [M. Aberhan/D. Wellmanns/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123682: authorized by Martin Aberhan, entered by Daniel Wellmanns on 27.01.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neritoina - Neritopsidae
 Murchisoniina - Zygopleuridae
 Murchisoniina - Phymatopleuridae
 Patellida - Acmaeidae
Scurriopsis (Scurriopsis) sp. Gemellaro 1879 limpet
 Neritoidea - Neridomidae
"Neritoma (Neridomus) riettii" = Neridomus
"Neritoma (Neridomus) riettii" = Neridomus snail
 Sorbeoconcha - Aporrhaidae
Pietteia trispinigera Szabo 1983 snail
 Trochoidea - Colloniidae
"Paleocollonia angeli" = Palaeocollonia, Crossostoma macerinoi
"Paleocollonia angeli" = Palaeocollonia snail
 Trochoidea - Turbinidae
 Trochoidea - Ataphridae
Zircia zircensis Szabo 1981 snail
 Vetigastropoda - Discohelicidae
 Turbinoidea - Proconulidae
Bivalvia
 Arcida - Parallelodontidae
"Parallelodon caterinae" = Catella caterinae
"Parallelodon caterinae" = Catella caterinae Parona 1894 clam
Cephalopoda
 Phylloceratida - Phylloceratidae
 Ammonitida - Lytoceratidae
Nannolytoceras pygmaeum d'Orbigny 1846 ammonite