Species

Trichophycus venosus Miller, 1879

Taxon description

Knaust, 2004

Flat, longitudinal, straight to slightly curved burrows preserved as endichnia and hypichnia at the interface of fine-grained sandstone and claystone. The horizontal to oblique, flattened, sand-filled, unlined burrows are up to 4 cm long, 0.5–1.0 cm wide with an abrupt and angular termination. Preservation of longitudinal sections is most common and these exhibit a poorly developed spreiten or a stuffed appearance. Complete burrow parts are rarely preserved. However, in some instances poorly developed parallel and transverse striae were observed on the lower surface of the burrows. The burrows occur in groups and cross-cut one another. T. venosus can be confused with Halopoa imbricata but lacks a lining, a vertical component, and is not organized as connected burrow systems.

Synonymy list
1925     Trichophycus venosum — Fritz , pp. 30-31, fig. 3:4
1997     Trichophycus venosus Miller, 1879 — Jensen , pp. 93, fig. 63
2004     Trichophycus venosus Miller, 1879 — Knaust , pp. 18, fig. 7.7
2011     Trichophycus venosus — Mángano & Buatois , pp. 10,16, fig. 15
Selection of related publications
Mángano, M. G., Buatois, L. A. 2011. Timing of infaunalization in shallow-marine early Paleozoic communities in Gondwanan settings: discriminating evolutionary and paleogeographic controls. Palaeontologia Electronica 14, 2, 1-21.
Knaust, D. 2004. Cambro-Ordovician trace fossils from the SW-Norwegian Caledonides. Geological Journal 39, 1, 1-24. DOI:10.1002/gj.941
Classification
References based on distribution