2001/12/01 by G.S. Odin, M.A. Lamaurelle · 3 citations
Earth and Planetary Sciences · Mathematics · #Paleontology and Stratigraphy of Fossils #Geological and Geophysical Studies #Geology #Stage (stratigraphy) #Boundary (topology) #Paleontology #Mathematics #Mathematical analysis
paper · pdf · doi:10.18814/epiiugs/2001/v24i4/002
openalex publication_date 2001/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The Campanian-Maastrichtian boundary has never been formally defined; in addition to a number of other less common uses two current practices exist: they consider the first occurrence (FO) of the boreal endemic key taxon Belemnella lanceolata (belemnite) and the last occurrence (LO) of the oceanic Radotruncana calcarata (planktonic foraminifera). Based on indirect correlation, the boreal FO is distinctly younger compared to the Tethyan LO.