Upper Cretaceous – Lower Tertiary decapod crustaceans from West Greenland

Abstract

Upper Cretaceous and Paleocene decapod crustaceans are described from Nûgssuaq, West Greenland; 14 genera, 3 of them new, contain 2 new macrurans, 13 new brachyurans and a galathaeid, referable to a previously described species. They form a mixed assemblage, although 7 of the brachyuran taxa and one of the macrurans are of burrowing species. Homolopsis dispar Roberts 1962 is transferred to Eohomola gen. nov. and a new genus, Metahomola, is proposed.

Exploring the preservation of a parasitic trace in decapod crustaceans using finite elements analysis

“…Seven specimens of recent and fossil decapod crustacean specimens with swellings attributable to K . crusta were studied through institutional loans: three Recent specimens of Munida valida [ 37 ] from the Gulf of Mexico preserved in 70% ethanol ( Fig 1A–1C ), three complete fossil specimens of Macroacaena rosenkrantzi [ 38 ] in siderite concretions from the Maastrichtian of Greenland, from a site referred to as the oyster-ammonite locality ( Fig 1D–1F ), and one isolated fossil carapace of Panopeus nanus [ 39 ] in lower Miocene limestone from the Duncans Quarry, Trelawny Parish, Jamaica (FLMNH-IP locality XJ015) ( Fig 1G ). These specimens were studied through institutional loans from Texas A&M University in College Station, Texas, USA (TAMU), the Natural History Museum of Denmark in Copenhagen, Denmark (NHMD) stored in the Type and Illustrated Paleontology Collection, and the University of Florida, Florida Museum of Natural History, Invertebrate Paleontology in Gainesville, Florida, USA (UF-FLMNH-IP), respectively.…”

Exploring the preservation of a parasitic trace in decapod crustaceans using finite elements analysis

“…Seven specimens of recent and fossil decapod specimens with swellings attributable to K. crusta were studied through institutional loans: three Recent specimens of Munida valida [37] from the Gulf of Mexico preserved in 70% ethanol (Fig 1 A-C), three complete fossil specimens of Macroacaena rosenkrantzi [38] in siderite concretions from the Maastrichtian of Greenland (Fig 1 D-F), and one isolated fossil carapace of Panopeus nanus [39] in lower Miocene limestone from the Duncans Quarry, Trelawny Parish, Jamaica (FLMNH-IP locality XJ015) (Fig 1 G). These specimens were studied through institutional loans from Texas A&M University (TAMU), the Natural History Museum of Denmark (NHMD), and the University of Florida, Florida Museum of Natural History, Invertebrate Paleontology (UF-FLMNH-IP), respectively.…”

New decapod crustaceans (Thalassinidea, Galatheoidea, Brachyura) from the Middle Oligocene of Patagonia, Argentina

“…Asthenognathus is one of the oldest known pinnotherid genera in the fossil record, with Oligocene records in Washington, USA (Schweitzer and Feldmann, 1999) and the new occunence herein. Other, older pinnotherid occurrences include Viapinnixa Schweitzer and Feldmann, 200 1 a, from the Danian of Greenland (Collins and Rasmussen, 1992) and the Eocene of Mexico (Vega et ah, 2001). The Eocene occurrence of Pinnixa White, 1846, reported by Glaessner (1969 has since been refened to the Hexapodidae (Schweitzer et ah, 2000).…”