Winterswijk Quarry, layer 43 (Triassic of Netherlands)

Where: Netherlands (52.0° N, 6.8° E: paleocoordinates 16.6° N, 16.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Vossenveld Formation, Illyrian (247.2 - 242.0 Ma)

• Layer 43 is considered to be Illyrian in age (Hagdorn and Simon 2010; Maxwell et al. 2016). Although this Illyrian date for layer 43 is upheld in this publication, it should be noted that this implies a large sedimentation gap or a severely reduced sedimentation rate between layer 37 (Bithynian) and layer 43 (Illyrian), which seems discordant with the available stratigraphic evidence.

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified carbonate

• The strata at Winterswijk are thought to alternately document shallow marine environments and tidally influenced sabkha-like (hypersaline) mudflats with algal laminates, polygonal mudcracks and reptile trackways.
• Partially laminated micritic limestones which in turn consist of alternating marly limestones, dolomites, clayey marls and dolomitic clay layers

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Naturalis Biodiversity Center, Leiden, the Netherlands (RGM) and collection

•of Adam Haarhuis (AHWW)

Primary reference: T. van Eldijk, G. Goris, A. Haarhuis, J. Lankamp, H. Winkelhorst, J. Reumer, A. Nel and T. Wappler. 2017. New fossil insects from the Anisian (Lower to Middle Muschelkalk) from the Central European Basin (Germany and The Netherlands). PalZ 91:185-194 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186555: authorized by Matthew Clapham, entered by Matthew Clapham on 25.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Dicondylia -
Neoptera indet., "? Grylloblattida indet." = Grylloblattodea, Coleoptera indet.
Neoptera indet. Martynov 1923 winged insect
RGM-791779 (order undetermined, but pattern of venation observed in some Orthoptera)
"? Grylloblattida indet." = Grylloblattodea Walker 1914 ice crawler
Coleoptera indet. Linnaeus 1758 beetle