THE HOLASTEROID ECHINOID ECHINOCORYS FROM THE MAASTRICHTIAN OF WESTERN AUSTRALIA

WA Museum Records and Supplements | Updated 1 decade ago

Abstract
Echinocorys stomias sp. novo is described from Maastrichtian strata of the Giralia Range, Western Australia. This represents the first description of any holasteroid genus from the Cretaceous of Australia. The species is large and can be distinguished from all other described species of the genus on the basis of its large peristome. This is considered to be a paedomorphic character, resulting from changes to growth allometry of the peristome.