Species

Archaeonassa fossulata Fenton et Fenton, 1937

Taxon description

Mángano et al., 2005b

Description. Straight to sinuous traces having a median groove flanked by rounded ridges. The flanking ridges are very well developed, and locally display an undulating morphology. In cross-sectional view the median groove commonly displays a V-shaped morphology. Trace width is 6.2-11.6 mm. Maximum length observed is 91.2 mm. Preserved as positive epirelief in fine- to very fine-grained sandstone.
Remarks. The ichnotaxonomic status of Archaeonassa is still uncertain (see discussion in Buckman, 1994; Yochelson and Fedonkin, 1997). A single ichnospecies, Archaeonassa fossulata , is known. It is interpreted as a grazing trace (pascichnion) produced by a wide variety of invertebrates, including arthropods and mollusks (Buckman, 1994; Yochelson and Fedonkin, 1997).

Synonymy list
1937     Archaeonassa fossulata sp. nov. — Fenton & Fenton , pp. 455
1994     Archaeonassa fossulata Fenton and Fenton, 1937 — Buckman , pp. 186, fig. 2,3
1997     Archaeonassa fossulata Fenton and Fenton, 1937 — Yochelson & Fedonkin , pp. 1214, fig. 1,2,4-7
2005     Archaeonassa fossulata Fenton and Fenton, 1937 — Mángano et al. , fig. 2A-B
2012     Archaeonassa fossulata Fenton and Fenton, 1937 — Hofmann et al. , pp. 937
2016     Archaeonassa fossulata Fenton and Fenton, 1937a — Hanken et al. , pp. 196, fig. 4A-C
2018     Archaeonassa fossulata Fenton and Fenton, 1937 — Hammersburg et al. , pp. 7, fig. 6.1
Selection of related publications
Hanken, N.-M., Uchman, A., Nielsen, J. K., Olaussen, S., Eggebø, T., Steinsland, R. 2016. Late Ordovician trace fossils from offshore to shallow water mixed siliciclastic and carbonate facies in the Ringerike Area, Oslo Region, Norway. Ichnos 23, 3-4, 189-221. DOI:10.1080/10420940.2016.1199427
Classification
Organism groupBiota
Ichnofossil groupIchnofossils
Bioturbation trace fossils
GenusArchaeonassa
Speciesfossulata
jamisoni
References based on distribution