Chromosomes of fossilized Metasequoia from early Oligocene of Siberia

Igor A. Ozerov, Nadezhda A. Zhinkina, Alla A. Torshilova, Eduard M. Machs, Alexander V. Rodionov

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We visualized the Feulgen-stained nuclei and chromosomes of fossilized leaves of Metasequoia occidentalis (syn. M. disticha) from West Siberia dated to 29–33 million years old. There are about 22 metacentric chromosomes in somatic anaphase cells. The karyotype of the fossil plant is similar to the modern species M. glyptostroboides. Metasequoia was widespread in middle and high latitudes of Eurasia and North America during the Cretaceous but is represented nowadays by the single relict species, M. glyptostroboides, in central China.

Original languageEnglish
Article number104365
JournalReview of Palaeobotany and Palynology
Volume287
DOIs
StatePublished - Apr 2021

Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Paleontology

Keywords

  • Chromosomes
  • Early Oligocene
  • Metasequoia
  • Nuclear structures

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