Author Affiliation, Ana.
Geography and Geology; Faculty of Pure and Applied Sciences
Jamaican Cretaceous echinoidea
Geological Society of America. Memoirs
Date of Publication
Special issue: Biostratigraphy of Jamaica. Raymond Wright and Edward Robinson, editors.
Twelve species of fossil echinoid have been recognized from the Jamaican Cretaceous. Only two taxa, the cidaroid Phyllacanthus leoni (Lambert and Sánchez Roig), and the arbacioid Goniopygus supremus Hawkins, are known from the Cretaceous of both Jamaica and Cuba. They are also the two most common echinoids in the Jamaican Cretaceous. Two other cidaroid species, including Temnocidaris? (Stereocidaris) sp., have been identified from disarticulated radioles only. Two other species of regular echinoid, the acrosaleniid Heterosalenia occidentalis Hawkins and the temnopleuroid Scoliechinus axiologus Arnold and Clark, have been described. The late Cretaceous age of S. axiologus is uncertain. Irregular echinoids are less common. Only Hemiaster? sp. (or spp.) is abundant, although it is usually poorly preserved. Other irregular echinoid species include the unique holectypoid Metholectypus trechmanni Hawkins, the cassiduloid Pygopistes? rudistarum (Hawkins), and a cassiduloid sp. indet. Two taxa, Orthopsis sp. and a nucleolitid sp. nov., are awaiting description. Most of these taxa are of Campanian and/or Maastrichtian age. Jamaican Cretaceous echinoids are best known from the Marchmont and Central inliers.....