Ichnofossils

Conichnus conicus Männil, 1966

Taxon description

Desai & Saklani, 2015

Tracemaker. Conichnus has been attributed to the activity of sea anemones (modern ceriantharid anemones) or similar animals (Shinn, 1968; Radwanski et al., 1975; Curran and Frey, 1977; Frey and Howard, 1981; Howard and Frey, 1984; Pemberton et al., 1992; MacEachern and Pemberton, 1992; Pollard et al., 1993; Savrda, 2002). The present structures (up to 1.8 m in length and 0.14 m in width) are large compared to  most other Conichnus. Very few examples of large Conichnus have been reported previously. Savrda (2002) described specimens up to 1.4 m long and 13-14 cm wide from Upper Cretaceous  Eutaw Formation of Alabama (USA), and Curran and  Frey (1977) noted specimens that are »3 m long and 24 cm in diameter from Pleistocene deposits of North Carolina (USA).

Type specimen data
: GIT GIT 107-4 , ,
Synonymy list
1966     Conichnus conicus — Ralf Männil, pp. 201, fig. 1: 4-6; 2: 1, 4
1975     Conichnus conicus — Häntzschel, pp. W52, fig. 31.3.
1975     Conichnus conicus Männil, 1966 — Hantzschel, pp. W52, fig. 31.3
1979     Amphorichnus sp. — Hurst, fig. 14D,E
1981     Conichnus conicus Myannil, 1966 — Frey & Howard, pp. 800, fig. text fig. 1A, 2A-E
1984     Conichnus conicus Myannil, 1966 — Howard & Frey, pp. 203, fig. 7
1992     Conichnus conicus — Pickerill et al., fig. 2c,d
2002     Conichnus conicus Männil, 1966 — Mangano et al., pp. 29, fig. 28A-B
2006     Conichnus conicus Männil, 1966 — Ershova et al., pp. 417
2007     Conichnus conicus — Landing et al., pp. 288
2010     Conichnus cf. conicus, Männil — Paczesna, fig. text fig. 3Ab
2011     Conichnus conicus Männil, 1966 — Metz, pp. 72, fig. 2A-B
2013     Conichnus conicus Männil, 1966 — Rajkonwar et al., pp. 23, fig. 2d
2015     Conichnus conicus Männil, 1966 — Vinn et al., pp. 272, fig. 3C-E; 4B-C
2015     Conichnus conicus Männil, 1966 — Desai & Saklani, pp. 47
2016     Conichnus conicus Männil, 1966b — Hanken et al., pp. 198, fig. 6A-D
2018     Conichnus conicus Männil, 1966b — Hammersburg et al., pp. 12, fig. Figure 8.2–8.4
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
Vinn, O., Wilson, M. A., Toom, U. 2015. Distribution of Conichnus and Amphorichnus in the Lower Paleozoic of Estonia (Baltica). Carnets de Géologie 15, 19, 269-278. DOI:10.4267/2042/58180
Landing, E., Peng, S., Babcock, L. E., Geyer, G., Moczydlowska-Vidal, M. 2007. Global standard names for the Lowermost Cambrian Series and Stage. Episodes 30, 4, 287-289. DOI:10.18814/epiiugs/2007/v30i4/004
Männil, Ralf 1966. Vertical burrows in Ordovician limestones of the Baltic. The organism and environment in the geological past. Ed: Hecker, R. F., pp. 200-207.