A new Y-shaped trace fossil attributed to upogebiid crustaceans from Early Pleistocene of Italy

Autor(en)

Peter Pervesler, Alfred Uchman

Abstrakt

Y−shaped trace fossil (U−shaped upper part with a basal shaft), Parmaichnus stironensis igen. nov. et isp. nov. penetrates

from a discontinuity surface cut in Early Quaternary mudstones in the Stirone Valley, Northern Italy. It is attributed to

upogebiid decapod crustaceans. Parmaichnus differs from Psilonichnus by the presence of turning chambers in the upper

part of the burrow. The turning chambers are considered to be an important taxonomic feature of upogebiid burrows. P.

stironensis occurs together with Thalassinoides cf. paradoxicus (produced probably by callianassid crustaceans) and

wide U−shaped pyritised cylinders (supposedly produced by balanoglossid hemichordates).

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Jagiellonian University in Krakow

Journal

Acta Palaeontologica Polonica

Band

54

Seiten

135-142

Anzahl der Seiten

8

ISSN

0567-7920

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

105118 Paläontologie

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