biostratigrapher التعريفات والمعاني == English == === Etymology === From biostratigraphy + -er. === Noun === biostratigrapher (plural biostratigraphers) An expert in biostratigraphy. شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة biostratigraphers biostratigraphie biostratigraphy biostratigraphic biostratigraphique biostratigraphisch biostratigraphically biostratigraphical biostratigraphischer