Hombach railway excavation (Devonian of Germany)

Where: Germany (50.6° N, 7.5° E: paleocoordinates 25.7° S, 2.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Siegen Formation, Pragian (410.8 - 407.6 Ma)

• Four main fossiliferous layers; arthropods restricted to layers 1 and 4. Arthropod-bearing strata represent the uppermost lower Siegen Formation (or "Tonschiefer-Schichten").

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; lithified shale

• Deltaic to marginal marine shallow water setting under tidal influence

Size class: macrofossils

Preservation: mold/impression

Collected in 1999

• Repository: Landessammlung fur Naturkunde Rheinland-Pfalz, housed at the Naturhistorisches Museum Mainz

Primary reference: M. Poschmann, L. I. Anderson, and J. A. Dunlop. 2005. Chelicerate arthropods, including the oldest phalangiotarbid arachnid, from the Early Devonian (Siegenian) of the Rhenish Massif, Germany. Journal of Paleontology 79:110-124 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152107: authorized by Matthew Clapham, entered by Matthew Clapham on 07.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Arachnida
 Phalangiotarbida - Devonotarbidae
Devonotarbus hombachensis n. gen. n. sp. Poschmann et al. 2005 phalangiotarbid
PWL 2002/5012-LS (ex. 542D), 5013-LS (ex. M 1832), 5014-LS (ex 543-D), 5015-LS (ex 544-D), M1834, M1835
 Trigonotarbida -
Trigonotarbida indet. Petrunkevitch 1949
PWL 2002/5016-LS (ex 538-D), 5017 (ex 539-D), 5018-LS (ex 540-D), 5019-LS (ex 541-D)
Xiphosura
 Xiphosurida - Diploaspididae
Diploaspis muelleri n. sp. Poschmann et al. 2005
PWL 202/5020-LS (ex M 1830), 5021-LS (ex M. 1831), 5022-LS (ex 545-D), 5023-LS (ex 546-D)