300g Silurian Crown Worm Fossils from Western Hunan

Description

Crown beetles are ancient invertebrates, a genus of trilobites. There is a row of protruding small tumors on the edge of the head, resembling a crown, hence the name. The number of segments in the central axis of the tail is more than that in the rib leaves on both sides, with a complete length of 3-6cm.
Crown beetle, with a crescent to subtriangular head and long cheek spines. The head saddle is wide in front and narrow in the back, with a large anterior lobe that merges with the false saddle anterior area. The posterior part contracts significantly and appears rod-shaped, with the narrow part passing through three deep and wide transverse grooves; There are 9 dentate tumors on the edge of the movable cheek, thick tumors on the head nail, and 11 segments in the chest; The tail is triangular, with a narrow central axis, flat and convex, gradually narrowing backwards, divided into 35-45 segments. There are fewer rib segments, consisting of 14-15 simple rib segments without grooves, with no rib spines at the outer end. [1]
Chinese name
Crown worm
Latin name
Coronacephalus
circles
Animal kingdom
Class
Trilobota
order
Ophiognatha
Suborder
Handtail suborder
section
Cometidae
genus
Crown worm genus
Distribution area
Southern Sichuan, Northern Guizhou, Western Hubei, Southern Anhui