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

Author(s)

Peter Pervesler, Alfred Uchman

Abstract

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(s)

Department of Palaeontology

External organisation(s)

Jagiellonian University in Krakow

Journal

Acta Palaeontologica Polonica

Volume

54

Pages

135-142

No. of pages

8

ISSN

0567-7920

Publication date

2009

Peer reviewed

Yes

Austrian Fields of Science 2012

105118 Palaeontology

Portal url