Ignatov M.S.1, Shcherbakov D.E.2 2009. A new fossil moss from the Lower Permian of the Russian Far East // Arctoa. Vol. 18: 201–212 [in English].

1 Tsitsin Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya 4, Moscow 127276 Russia; e-mail: misha_ignatov@list.ru

2 Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya 123, Moscow 117997 Russia, e-mail: dshh@narod.ru

KEYWORDS: Palaeocampylopus, Bryophyta, fossils, Permian, Russian Far East, Polytrichaceae, Dicranaceae.

ABSTRACT. A new genus and species Palaeocampylopus buragoae is described by imprints in the Lower Permian deposits from the Russky Island in the Sea of Japan, the Russian Far East. The plant size and the overall habit, orthotropic growth, narrow leaves, and especially terminal cup-like structures, resembling rosettes of perigonial leaves, indicate the most probable affinity with Dicranaceae (cf. Campylopus) or Polytrichaceae (cf. Polytrichum and Polytrichastrum). The costa is unseen in leaves and likely was very broad. Although the cell structure is not well seen, striation of abaxial costa surface allows to estimate the width of dorsal epidermal cells.

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doi 10.15298/arctoa.18.14