Species
Sulcolithos variabilis Knaust, 2020
Taxon description
Knaust, 2020a
Diagnosis. Grooves unbranched or with short acorn-, bulbor lance-shaped side-branches. Description. The holotype and paratypes occur on the upper bedding plane of a micritic limestone bed (ca. 10 cm thick) with an area of ca. 430 cm2 . The bedding plane contains various sharply outlined burrows that document frm- to hardground conditions and displays over a dozen of grooves assignable to S. variabilis. The grooves are associated with several shallow pits with irregular elliptical outline and with similar dimensions. Moreover, numerous smaller pits with an elongate, elliptical or curved outline are scattered on the surface. Some circular apertures belong to tubular shafts ca. 2 mm in diameter as parts of Trypanites weisei Mägdefrau, 1932.
Type specimen data
Synonymy list
2010 non Sulcolithus variabilis — Vinn & Wilson , fig. Fig. 3
2014 Sulcolithus variabilis — Vinn et al.
2019 non Sulcolithus variabilis — Toom et al. , fig. fig. 6a
2019 Sulcolithus variabilis — Toom et al. , fig. Figs 6C,I
2020 Sulcolithos variabilis isp. nov. — Knaust , fig. Fig. 2
Selection of related publications
Knaust, D. 2020. Sulcolithos variabilis igen. et isp. nov.: grooves on firm and hard bedding surfaces. Paläontologische Zeitschrift 94, 1, 195-206. DOI:10.1007/s12542-019-00464-z
Knaust, D., Dorador, J., Rodríguez-Tovar, F. J. 2020. Burrowed matrix powering dual porosity systems – A case study from the Maastrichtian chalk of the Gullfaks Field, Norwegian North Sea. Marine and Petroleum Geology 113, 104158. DOI:10.1016/j.marpetgeo.2019.104158
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Classification
| Organism group | Biota |
| Ichnofossil group | Ichnofossils |
| Bioerosional trace fossils | |
| Genus | Sulcolithos |
| Species | variabilis |
References based on distribution
- Knaust, 2020a Engelhardt Quarry Middle Triassic
- Knaust, 2020a Saxby shore Vormsi Stage
- Knaust, 2020a Aluvere quarry Haljala Stage
- Knaust, 2020a Tosna River, Leningrad Oblast Volkhov Stage