Willwerath (Mainz collection) (Devonian of Germany)

Where: Germany (50.3° N, 6.5° E: paleocoordinates 26.7° S, 4.6° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Klerf Formation, Early/Lower Emsian (409.1 - 402.5 Ma)

• The fossil-bearing sequence is approximately 1.5 m thick and comprises muds and siltstones intercalated with thin, sandy laminae.

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified, gray siltstone

• Fine, hard silt with a blocky fracture. The sediment is grey, but weathers to an orange-brown colour.

Size class: macrofossils

Preservation: mold/impression

Collected by M. Poschmann

• Repository: Landessammlung fur Naturkunde, Rheinland-Pfalz at Mainz

Primary reference: J. A. Dunlop and M. Poschmann. 1997. On the Emsian (Lower Devonian) arthropods of the Rhenish Schiefergebirge: 1. Xenarachne, an enigmatic arachnid from Willwerath, Germany. Palaeontologische Zeitschrift 71:231-236 [D. Smith/A. Kinchloe/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 155775: authorized by Matthew Clapham, entered by Matthew Clapham on 30.04.2014, edited by April Kinchloe and Roy Plotnick

Creative Commons license: CC BY (attribution)

Taxonomic list

Arachnida
 Tetrapulmonata -
Xenarachne willwerathensis n. gen. n. sp. Dunlop and Poschmann 1997
PWL1997/1-LS
 Phalangiotarbida - Devonotarbidae
Devonotarbus hombachensis2 Poschmann et al. 2005 phalangiotarbid
PWL2011/5668-LS (ex coll. E. Braun)
Euchelicerata
 Eurypterida - Rhenopteridae
Rhenopterus dientsi3 Størmer 1936 eurypterid
 Eurypterida - Pterygotidae
Jaekelopterus rhenaniae3 Jaekel 1914 eurypterid
 Eurypterida - Adelophthalmidae
Pruemopterus salgadoi1 Poschmann 2021 eurypterid
Adelophthalmus sievertsi3 Poschmann 2006 eurypterid
Parahughmilleria hefteri3 Stormer 1973 eurypterid
 Eurypterida - Erieopteridae
Erieopterus sp.3 eurypterid