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Torleyiscutellum herwigorum n. gen., n. sp. (Trilobita) from the Upper Honsel Beds of the north-western Sauerland (Lower Givetian, Rhenohercinian Zone), with a contribution to the scutelluid systematic Basse, M., Koch, L. & U. Lemke Abstract: The Oege
Beds (Upper Honsel Beds) of the gelogical mapsheets 4610 Hagen and 4611
Hohenlimburg, Remscheid-Altena Anticline, are intercalated between the
mainly soliciclastic Lower Honsel Beds and the reefal Massenkalk. They
belong to the Lower Givetian Upper hermiansatus Biozone. They bear reefal limestones, carbonatic siltstones and claystones yielding a largely
little known fauna of the neretic biofacies including anthozoans, brachiopods,
bivalves, bryozoans, chaetetids, crinoids, gastropods, stromatoporids, and
trilobites. The trilobites are represented by one species of the subfamily
Scutelluinae and two species of the subfamily Dechenellinae. Torleyiscutellum
herwigorum n. gen., n. sp. is a representative of a group of scutelluids
formerly assigned to Scutellum costatum. In Brontes flabellifer,
type species of Goldius, the cranidial posterior border furrow is in
contact with the ledge accompanying postpalpebral parts of the facial suture
(primitive condition), whereas in Torleyiscutellum torleyi the two
units are separated by a branch of the posterior fixigena protruring
abaxially (derived condition). Scutellum costatum, type species of Scutellum,
is restricted to its neotype. Finds of Dechenella burmeisteri in the
north-western Sauerland suggest for the base of the Oege Beds a position
close to the Rodert Formation-Kerpen Formation boundery of the Standard
Division of the Eifel Synclines. This is a suggestion for a new biostratigraphic concept on a macrofaunal
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