ABSTRACT: A new, morphologically distinctive, murornate prasinophyte phycoma, Dictyotidium senticogremium sp. nov., is described fromUpperDevonian strata of theGeirud Formation, AlborzMountains, northern Iran. It is characterized by a small, near-circular vesicle, the surface of which is regularly divided by low membranous muri into few relatively large polygonal lacunae; central parts of the latter bear prominent granulate sculpture. Dictyotidium senticogremium sp. nov. occurs in a relatively diverse acritarch, prasinophyte, and miospore assemblage collectively indicating an early Late Devonian (Frasnian) age. The species is persistent, relatively common and has a presumably short stratigraphic range; therefore it is a potentially useful biostratigraphic index fossil for inter-basinal correlation across Iran.
You are not registered as a current subscriber. If your institution has an active subscription, contact us to ask for help with your computer's IP address. If you have an active personal subscription, log in.
Subscribe to Micropaleontology
|Online only||Added print|