Les Crinoïdes pédonculés (Echinodermes) photographiés sur les dorsales océaniques de l'Atlantique et du Pacifique. Implications biogéographiques

Deep sea photographs of mid oceanic ridges taken by Famous and Cyamex expeditions show frequent stalked crinoids (Echinodermata, Crinoidea, families Hyocrinidae and Bathycrinidae). Several new species are observed. Mid oceanic ridges are important in biogeography as migration axis, and as ways for colonization of abyssal plains. [NOT CONTROLLED OCR]