formality Formal Lower boundary definition FAD of the Graptolite Akidograptus ascensus Lower boundary GSSP Dob's Linn, Moffat, United Kingdom 55°26′24″N... 57 KB (5,666 words) - 09:06, 22 April 2024 |
was originally defined as the first appearance of the graptolite Akidograptus ascensus at Dob's Linn, but was later discovered to be imprecise. It is currently... 14 KB (1,245 words) - 20:04, 5 November 2023 |
formality Formal Lower boundary definition FAD of the graptolite Akidograptus ascensus Lower boundary GSSP Dob's Linn, Moffat, U.K. 55°26′24″N 3°16′12″W... 5 KB (340 words) - 22:01, 5 October 2021 |
2006 Upper boundary definition First appearance of the graptolite Akidograptus ascensus Upper boundary GSSP Dob's Linn, Moffat, U.K. 55°26′24″N 3°16′12″W... 18 KB (2,065 words) - 08:10, 10 January 2024 |
Moffat, Dumfries-shire, Scotland, U.K. Biologic: First appearance of Akidograptus ascensus and Parakidograptus acuminatus (Graptolite). 1.6 m above the base... 92 KB (3,982 words) - 15:30, 16 April 2024 |