ABSTRACT: Sphenolithus avis n. sp. is a new calcareous nannofossil species described in materials recovered from Ocean Drilling Program (ODP) sites in the equatorial region. Sphenolithus avis n. sp. is small to medium size with a short tapered apical spine and a large flaring proximal cycle. Its stratigraphic range spans Martini Zones NP23 to NP25, and it is widely distributed in three different equatorial regions, ranging from marginal to deep-sea locations. Because of its relatively short range and global distribution, S. avis n. sp. is a potential secondary Sphenolithus zonal marker in the upper Oligocene.
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|