On the likely palaeoelevation of the Turonian – Coniacian Arman Flora site (North-eastern Asia)
|Klíčová slova||CLAMP, angiosperms, palaeoaltitude, Late Cretaceous, Russian Far East|
|Citace||HERMAN, Alexei B.. On the likely palaeoelevation of the Turonian – Coniacian Arman Flora site (North-eastern Asia). Fossil Imprint / Acta Musei Nationalis Pragae, Series B – Historia Naturalis. Prague: National Museum, 2018, 74(1-2), 159-164. DOI: https://doi.org/10.2478/if-2018-0011. ISSN 2533-4050 (tisk), 2533-4069 (online). Also available from: https://publikace.nm.cz/periodicals/fiamnpsbhn/74-1-2/on-the-likely-palaeoelevation-of-the-turonian-coniacian-arman-flora-site-north-eastern-asia|
The Turonian – Coniacian (Late Cretaceous) Arman Flora (North-eastern Russia, Magadan District) exhibits a high diversity of fossil angiosperms (28 dicot species). Based on their physiognomy, palaeoclimate variables were estimated showing that the flora experienced a humid warm-temperate climate without any pronounced seasonality. Palaeoclimate variables estimated for the coastal plain floras (Penzhina, Kaivayam and Tylpegyrgynai floras, North-eastern Russia) are the same (within analytical errors) as those estimated for the Arman Flora that existed within uplands of the Okhotsk-Chukotka volcanogenic belt. This conclusion implies that the elevation of the intermontane basin of the Arman Flora biotope was not high, presumably not more than 600 m – and not sufficient to be reflected in palaeoclimate experienced by the Arman Flora.