"The Lutetian GSSP at meter 167.85 of the Gorrondatxe section in a dark marly level where the nanofossil Blackites inflatus first appears" (working group website 15 Nisan 2021 tarihinde Wayback Machine sitesinde arşivlendi.).
"The Lutetian GSSP at meter 167.85 of the Gorrondatxe section in a dark marly level where the nanofossil Blackites inflatus first appears" (working group website 15 Nisan 2021 tarihinde Wayback Machine sitesinde arşivlendi.).