An angiosperm dominated herbaceous community from the early – middle Albian of Primorye, Far East of Russia
|Klíčová slova||early angiosperms, palaeoecology, Early Cretaceous, Albian, Far East, Russia|
|Citace||GOLOVNEVA, Lina, ALEKSEEV, Pavel, BUGDAEVA, Eugenia a VOLYNETS, Elena. An angiosperm dominated herbaceous community from the early – middle Albian of Primorye, Far East of Russia. Fossil Imprint / Acta Musei Nationalis Pragae, Series B – Historia Naturalis. Prague: National Museum, 2018, 74(1-2), 165-178. DOI: https://doi.org/10.2478/if-2018-0012. ISSN 2533-4050 (tisk), 2533-4069 (online). Also available from: https://publikace.nm.cz/periodicals/fiamnpsbhn/74-1-2/an-angiosperm-dominated-herbaceous-community-from-the-early-middle-albian-of-primorye-far-east-of-russia|
An extraordinarily well-preserved autochthonous angiosperm herbaceous community is described from the Lower Cretaceous deposits of the Frentsevka Formation, southern Primorye, Far East of Russia. The locality Bolshoy Kuvshin is situated on the coast of the Ussuri Bay on the Bolshoy Kuvshin Cape near the town of Bolshoy Kamen. The plant-bearing layer was determined to be early – middle Albian in age. The angiosperm assemblage includes six species: Achaenocarpites capitellatus Krassilov et volynets, Ternaricarpites floribundus Krassilov et volynets, Jixia pinnatipartita S.X.Guo et G.sun, Asiatifolium elegans G.sun, S.X.Guo et shao L.ZhenG and two new undetermined species. The majority of specimens are represented by fragments of branching stems with attached leaves or fruits or by almost complete plants. Two species (Jixia pinnatipartita and Asiatifolium elegans) are also in the angiosperm assemblage from the Chengzihe Formation (eastern Heilongjiang, China). The angiosperm remains are accompanied by the fern Onychiopsis psilotoides which is represented by almost entire young plants. The plant fossils were buried during a single flooding event and remained very close to their original location. They formed a pioneer open herbaceous community, consisting of ferns and angiosperms with a predominance of the latter and adapted to colonize fresh sediments in periodically flooded areas.