A remarkably well-preserved terrestrial isopod (Peracarida: Isopoda: Armadillidiidae) from the upper Oligocene of Hungary, with remarks on the oniscidean taphonomy

作者：Hyzny Matus^*; David Arpad

来源：Palaeontologia Electronica, 2017, 20(1): 5A.

DOI：10.26879/615

• Armadillidium
• central Europe
• cuticle preservation
• Egerian
• fossil

Isopods rank among the more successful and diverse peracaridan crustaceans, the clade of oniscidean isopods (pill-bugs and wood-lice) being one of the few pancrustacean groups to have successfully invaded terrestrial habitats. Yet, the majority of fossil occurrences of oniscidean isopods stem from amber deposits and only under very special circumstances are they preserved in marine settings; such an occurrence is recorded herein. A single, specifically indeterminate, specimen of Armadillidium from upper Oligocene strata at Eger (Hungary) is interpreted as a drowned individual that found itself trapped on a piece of driftwood or was caught by waves while walking on the seashore. The animal was preserved virtually intact and close to a natural posture. A near-perfect preservation of the isopod's cuticular surface indicates their potential to be preserved in marine siliciclastic settings under specific conditions.

• 出版日期2017