TY - RPRT TI - Apertural features and surface texture of upper Paleogene biserial planktonic foraminifers: links between Chiloguembelina and Streptochilus. AU - R.Z. Poore AU - L.B. Gosnell PY - 1985 DO - 10.2113/gsjfr.15.1.1 UR - https://pubs.usgs.gov/publication/70013135 ID - 70013135 ER -