Several specimens assigned to A. merga have less than 8 appendages. These forms are assigned to A. merga because of similar overall shape and presence of simple to bifurcating appendages and the very distinctive collarette. In the Nevada study area the species is restricted to the Asgill. In the Hanson Creek Formation Ancyrochitina merga is common, but rarely encountered in the Eureka Quartzite. Ancyrochitina merga can be distinguished from other members of the genus Ancyrochitina in the Nevada study area by the very distinctive collarette and their commonly bifurcating appendages.
Spores belong to the plant kingdom.
Most palynologists agree that these forms represent ancient fruiting body elements of plants long extinct. This species of spore pictured is new and in the process of being formally described.