TY - JOUR A1 - Lundin, R. F. A1 - Petersen, L. E. A1 - Siveter, D. J. T1 - Nonpalaeocope ostracod biostratigraphy of the type Wenlock Series, Silurian, of the Welsh Borderland JO - J. Micropalaeontol. J1 - JM VL - 9 IS - 2 SP - 173 EP - 187 Y1 - 1991/03/01 PB - GSL Publishing SN - 2041-4978 UR - https://jm.copernicus.org/articles/9/173/1991/ L1 - https://jm.copernicus.org/articles/9/173/1991/jm-9-173-1991.pdf DO - 10.1144/jm.9.2.173 ER -