The genus Birisia (Dicksoniaceae) in Cretaceous flora of Siberia and North-East of Russia

Grabovskiy, A. A.; Golovneva, L. B.

doi:10.31111/palaeobotany/2018.9.32

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…Of particular scientific interest is the existence of rich ancient floras that inhabited the high latitude areas of the Arctic, up to palaeolatitude of 85 • N [1], during the global "hothouse" climate of the Cretaceous [2][3][4]. The Cretaceous polar vegetation possessed a relatively large number of endemic plants, mainly among ferns such as Arctopteris [5,6], Birisia [7,8], Chaunia [9], Kolymella [9], Ochotopteris [10] and Penzhinopteris [11], and examples of endemic angiosperms include Anadyricarpa [12], Arthollia [13], Barykovia [14], Caricopsis [15], Chachlovia [16], Crataegites [15], Dalembia [17], Disanthophyllum [18], Grebenkia [19], Kenella [20], Palaeotrapa [21], Paraprotophyllum [22], Pseudoprotophyllum [23], Penzhinia [24], Platimelis [25], Ranunculaecarpus [15], Rarytkinia [18], Soninia [16], Sorbites [26], Terechovia [27] and Scheffleraephyllum [28].…”

Section: Introductionmentioning

confidence: 99%

Ochotopteris—An Endemic Fern of the Mid-Cretaceous Arctic

Herman,

Domogatskaya

2023

Geosciences

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Three species belonging to the fern genus Ochotopteris E. Lebedev, including the new species O. lebedevii Herman et Domogatskaya, are revised, described and illustrated in this paper. The fossils come from Albian, Cenomanian, Turonian and Coniacian beds exposed at seven sites in North-Eastern Asia and Northern Alaska. These sites are located in the Cretaceous Arctic, with their palaeolatitudes ranging from 60° N to 80° N. The high endemism characteristic of the mid-Cretaceous Arctic flora is most probably due to adaptations in the globally distinctive Arctic conditions: the unique combination of temperatures, precipitation and the highly seasonal polar light regime. Being an endemic plant of the mid-Cretaceous Arctic, Ochotopteris ferns were adapted to a regional wet temperate to a wet warm temperate palaeoclimate accompanied by marked sunlight seasonality with a prolonged—up to several weeks—winter darkness and continuous summer daylight, also lasting for several weeks. The majority of the mid-Cretaceous Arctic plants were deciduous. Their predominant deciduousness was most probably due to the polar light seasonality: at the end of the growing season, some plants dropped their leaves or leafy shoots, whereas others—including Ochotopteris ferns—died back to rhizome systems.

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Section: Introductionmentioning

confidence: 99%

Ochotopteris—An Endemic Fern of the Mid-Cretaceous Arctic

Herman,

Domogatskaya

2023

Geosciences

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The Early Cretaceous tree fern Acanthopteris (Dicksoniaceae): New insight into fossil records, species diversity, palaeogeography and palaeoclimate

Yuan,

Wang,

Zhou

et al. 2024

Cretaceous Research

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The Chingandzha flora of the Okhotsk-Chukotka volcanic belt

Golovneva

2019

Palaeobotany

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The Chingandzha flora comes from the volcanic-sedimentary deposits of the Chingandzha Formation (the Okhotsk-Chukotka volcanic belt, North-East of Russia). The main localities of the Chingandzha flora are situated in the Omsukchan district of the Magadan Region: on the Tap River (basin of the middle course of the Viliga River), on the Kananyga River, near the mouth of the Rond Creek, and in the middle reaches of the Chingandzha River (basin of the Tumany River). The Chingandzha flora includes 23 genera and 33 species. Two new species (Taxodium viligense Golovn. and Cupressinocladus shelikhovii Golovn.) are described, and two new combinations (Arctopteris ochotica (Samyl.) Golovn. and Dalembia kryshtofovichii (Samyl.) Golovn.) are created. The Chingandzha flora consists of liverworts, horsetails, ferns, seed ferns, ginkgoaleans, conifers, and angiosperms. The main genera are Arctop teris, Osmunda, Coniopteris, Cladophlebis, Ginkgo, Sagenoptepis, Sequoia, Taxodium, Metasequoia, Cupressinocladus, Protophyllocladus, Pseudoprotophyllum, Trochodendroides, Dalembia, Menispermites, Araliaephyllum, Quereuxia. The Chingandzha flora is distinct from other floras of the Okhotsk-Chukotka volcanic belt (OCVB) in predominance of flowering plants and in absence of the Early Cretaceous relicts such as Podozamites, Phoenicopsis and cycadophytes. According to its systematic composition and palaeoecological features, the Chingandzha flora is similar to the Coniacian Kaivayam and Tylpegyrgynay floras of the North-East of Russia, which were distributed at coastal lowlands east of the mountain ridges of the OCVB. Therefore, the age of the Chingandzha flora is determined as the Coniacian. This flora is assigned to the Kaivayam phase of the flora evolution and to the Anadyr Province of the Siberian-Canadian floristic realm. The Chingandzha flora is correlated with the Coniacian Aleeky flora from the Viliga-Tumany interfluve area and with other Coniacian floras of the OCVB: the Chaun flora of the Central Chukotka, the Kholchan flora of the Magadan Region and the Ul’ya flora of the Ul’ya Depression.

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The genus Birisia (Dicksoniaceae) in Cretaceous flora of Siberia and North-East of Russia

Cited by 5 publications

References 12 publications

Ochotopteris—An Endemic Fern of the Mid-Cretaceous Arctic

Ochotopteris—An Endemic Fern of the Mid-Cretaceous Arctic

The Early Cretaceous tree fern Acanthopteris (Dicksoniaceae): New insight into fossil records, species diversity, palaeogeography and palaeoclimate

The Chingandzha flora of the Okhotsk-Chukotka volcanic belt

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