defining a W. crosbyi zone. Notwithstanding the weakness of a firstappearancedatum as a definition for the base of a period, the species has been proposed
correlation, and chronostratigraphy—overcoming deficiencies of the firstappearancedatum (FAD) concept. Earth-Science Reviews (journal),123. 133-172 Brasier
abnormal tusk from Lisbon, the Miocene record in Portugal and the firstappearancedatum. Evidence from Lisbon, Portugal" (PDF). Ciencias da Terra. 15: 173–190
Danhara, Yugo; Aziz, Fachroel (10 January 2020). "Age control of the firstappearancedatum for Javanese Homo erectus in the Sangiran area". Science. 367 (6474):
Taxon FirstAppearanceDatum Last Appearance Datum Previous Estimates Image Abyssosaurus nataliae Late Hauterivian Late Hauterivian Late Hauterivian Albertonectes
vertebrate faunachron (LVF) is a time interval that is defined by the firstappearancedatum (FAD), or first occurrence, of a tetrapod index fossil and is commonly
include specimens of the planktonic Globoquadrina dehiscens with a firstappearancedatum at the start of the Waitakian stage, indicating that OU 22126 is
trilobites is published by Holmes & Budd (2022), who argue that the firstappearancedatum of trilobites in the fossil record closely reflects their evolutionary
Masafumi Sudo; Yugo Danhara; Fachroel Aziz (2020). "Age control of the firstappearancedatum for Javanese Homo erectus in the Sangiran area". Science. 367 (6474):
Masafumi; Danhara, Yugo; Aziz, Fachroel (2020). "Age control of the firstappearancedatum for Javanese Homo erectus in the Sangiran area". Science. 367 (6474):