Ivnanguit (Cretaceous of Greenland)

Where: Greenland (69.4° N, 52.8° W: paleocoordinates 55.1° N, 16.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Skansen Member (Atane Formation), Middle Cenomanian (99.6 - 93.5 Ma)

• At its type locality, a mid-Cenomanian age seems most likely, with a maximum age range of Late Albian to Cenomanian for the palynomorph assemblages from this member.

• group of beds-level stratigraphic resolution

Environment/lithology: wet floodplain; lithified mudstone

• The carbonaceous mudstones, sandstones and coal seams are interpreted as freshwater lake or swamp deposits representing the vertical aggradation of a subaerial to shallow, limnic floodplain to upper delta plain. There are no indications – neither palynological evidence nor the presence of pyrite – to suggest marine or brackish-water conditions.

•As a result of the opening of the Labrador Sea in Late Mesozoic to Early Cenozoic times, a complex of linked rift basins stretching from the Labrador Sea to northern Baffin Bay developed along West Greenland. Two main episodes of regional rifting and basin development during this time have been documented in the area: an episode of Early Cretaceous rifting, and a Late Cretaceous – Early Paleocene rift episode prior to the start of sea-floor spreading in mid-Paleocene time.

Size class: macrofossils

Preservation: adpression

Collected by Steenstrup

• Repository: Specimens probably in the Mineralogical Museum, Copenhagen (Steenstrup collection)

Primary reference: O. Heer. 1883. Ueber die fossilen Insekten Grönlands. Flora Fossilis Grönlandica. Die Fossile Flora Grönlands 143-148 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152289: authorized by Matthew Clapham, entered by Matthew Clapham on 16.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Coleoptera -
"Elytridium multipunctatum n. sp." = Elytrulum multipunctatum
"Elytridium multipunctatum n. sp." = Elytrulum multipunctatum Heer 1883 beetle