0000000000349005
AUTHOR
Aaron W. Hunter
Preliminary report on new echinoderm Lagerstatten from the Upper Ordovician of the eastern Anti-Atlas, Morocco.
8 pages (p.23-30); International audience; Four distinct echinoderm Lagerstatten have recently been discovered in the Upper Ordovician of the eastern Anti-Atlas, Morocco. They have yielded hundreds of exquisitely preserved specimens. Their taphonomy and associated lithology both suggest rapid, in situ burial. Here we discuss the diverse range of assemblages represented and their significance to the diversity of echinoderms in the Lower Palaeozoic. The oldest assemblage (Izegguirene Formation, lowermost Caradoc) is dominated by eocrinoids, large ophiuroids, and mitrate stylophorans associated with rare crinoids. It shows strong similarities with slightly older faunas described from the under…
Review of “Marine Hard Substrates: Colonization and Evolution,” a Thematic Session at the Geological Society of America Annual Meeting, Denver, USA, November 7–10, 2004
A theme session, jointly sponsored by the Paleontological Society and the Geological Society of America Sedimentary Geology division, and entitled “Marine Hard Substrates: Colonization and Evolutio...