Helcionelloida - Helcionellida - Coreospiridae

Alternative combination: Trenella merino

Full reference: B. Runnegar and P.A. Jell. 1976. Australian Middle Cambrian molluscs and their bearing on early molluscan evolution. Alcheringa 1(1/2):109-132

Belongs to Latouchella according to P. J. Wagner 2011

Sister taxa: Latouchella accordionata, Latouchella adunca, Latouchella aliciae, Latouchella aperta, Latouchella arcuata, Latouchella arguta, Latouchella burlingi, Latouchella costata, Latouchella dimicostata, Latouchella holmdalense, Latouchella huangshandongensis, Latouchella iacobinica, Latouchella jacobinica, Latouchella memorabilis, Latouchella orientalis, Latouchella ostenfeldense, Latouchella pearylandica, Latouchella pocatelloensis, Latouchella sanxiaensis, Oelandiella korobkovi, Oelandiella sibirica, Oelandiella aequa, Oelandiella bellus, Oelandiella maidipingensis, Archaeospira avalonensis, Hubeispira nitida, Cambroconus minimus, Uncinaspira squamosa

Type specimen: Its type locality is ANU Collection 10352, 16 km northeast of Mootwingee Aboriginal Site, which is in a Solvan carbonate limestone in the Coonigan Formation of Australia

Ecology: slow-moving low-level epifaunal detritivore