Species

Chondrites recurvus (Brongniart, 1823)

Taxon description

Fan, R. et al., 2021

Subhorizontal branching structure with most of the branches distributed on the convex side of a relatively long curved tunnel. Two orders of primary successive branching are observed and the branching angle is 26◦ − 56◦. The tunnels are about 1 mm wide

Baucon et al., 2020c

Chondrites recurvus (Brongniart, 1828) ) is characterized by branches only at one side of the master branch, all bent in one direction (Uchman, 1998, 1999; Seilacher, 2007); branching occurs up to the 3rd order (Fu, 1991).

Razzolini et al., 2016

Description. Endichnial, horizontal, branched tunnels. The second-order branches arise from the convex side of a strongly curved first-order branch. Short, third-order branches are very rare. The second-order branches are slightly winding, up to 40 mm long. All tunnels are about 1.5 mm wide. They are filled with dark grey argillaceous background sediment.

Remarks. For discussion of this ichnospecies see Fu (1991) and Uchman (1999).

Synonymy list

1823 Fucoides recurvus — Brongniart , pp. 309, fig. 19:4

1828 Fucoides recurvus — Brongniart , pp. 62, fig. 5:2

1833 Chondrites recurvus — Sternberg , pp. 26-27

1971 Chondrites recurvus ( Brongniart, 1823) — Chamberlain , pp. 236, fig. 31:10; Text-fig. 6C,D

1991 Chondrites recurvus ( Brongniart, 1823) — Fu , pp. 19, fig. 2:D-E

1998 Chondrites recurvus ( Brongniart, 1828) — Głuszek , pp. 525, fig. 4B,D; 5, 11B

1999 Chondrites recurvus ( Brongniart, 1823) — Uchman , pp. 93, fig. 5:5-6; 15:3

2004 Chondrites ?recurvus (Brongniart, 1823) — Leszczynski , fig. 16

2007 Chondrites recurvus ( Brongniart, 1823) — Uchman , pp. 987, fig. 3A

2011 Chondrites recurvus ( Brongniart, 1823) — Gaillard , pp. 213, fig. 3

Classification

Organism group	Biota
Ichnofossil group	Ichnofossils
	Soft-sediment trace fossils
Genus	Chondrites
Species	affinis
	bollensis
	caespitosus
	intricatus
	patulus
	recurvus
	stellaris
	targionii