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Azolla macrocephala
Azolla macrocephala V.P. Nikitin in V.P. Nikitin, Hval' Paleobot., 2: 66. 2011
- Name
- Azolla macrocephala
- Rank
- Species
- Generic Name
- [Genus] Azolla
- Authors (Name)
- Nikitin V. P.
- Authors (Pub.)
- Nikitin V. P.
Hval' A. V.
- Publication
- Reproduktivnye struktury Azolla v kajnozoe Zapadnoj Sibiri [2011]
- Journal
- Paleobotanika
- Volume
- 2
- Page number
- 66
- Year
- 2011
- Fossil Status
- sporae dispersae (megaspores)
- Stratigraphy
- Miocene
- Strat. comment
- Abrosimovian suite
- Location
- Kordon village, Novosibirsk region, Russian Federation
- Paleoregion
- Eurasia (W Siberia)
Data for Holotypus
- Repository
- Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
- Repository Number
- 200/Н2661
- Diagnosis
- Megaspore complexes medium-sized, 0,35—0,50 mm long. Supraspore usually longer than the infraspore, sometimes considerably so. Basic fl oats 9. Lower fl oats 1,5 times smaller than the upper ones or of comparable size. Cap partially covering the supraspore. Columella present. Collar relatively wide, narrow, or almost indistinct. Suprafi losum extensive. Infraspore surface fi nely granulate, even or covered with dense wide rounded tubercles, with occasional spherical or lobulated spherical outgrowths formed by merging or enlargement of adjacent grains, and with occasional elongated grains enlarged vertically or horizontally. Infrafilosum absent.
