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D’Alessandro & Bromley, 1986

Trace fossils in Pleistocene sandy deposits from Gravina area, southern Italy

D’Alessandro, A., Bromley, R. G.
Aasta1986
AjakiriRivista Italiana di Paleontologia e Stratigrafia
Köide92
Number1
Leheküljed67-102
Tüüpartikkel ajakirjas
Keelinglise
Id28197

Abstrakt

The ichnology of the Pleistocene sand sequence of Gravina is described. The trace fossils provide evidence for marine coastal environments, ranging from the lower infralittoral to intertidal. The study is based on two sections, at Lama La Noce and at Notargiacomo's Quarry respectively. Meniscate backfill structures produced by echinoids (Schizaster canaliferus) occur in thin clay horizons. Sand substrates are dominated by Ophiomorpha, Thalassinoides, Cylindrichnus and vertical equilibrium traces. Two new ichnospecies are erected: Cylindrichnus errans, which has lateral spreite—like displacement of the shaft: and Dactyloidites peniculus for finely branched, radiating spreite structures.

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