The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2024

IDNAME urn:idName:ifpni.org:species:76D6284A-E4CE-4D65-A915-6DB0F44AE380 species
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Azolla aculeata

Azolla aculeata V.P. Nikitin in V.P. Nikitin, Hval' Paleobot., 2: 44. 2011
Name
Azolla aculeata
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
44
Year
2011
Fossil Status
sporae dispersae (megaspores)
Stratigraphy
Eocene
Strat. comment
Tavdinian suite
Location
NE Tomsk, Tomsk region, Russian Federation
Paleoregion
Eurasia (W Siberia)
Data for Holotypus
Repository
Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
Repository Number
210/Н4347
Diagnosis
Megaspore complexes medium-sized, 0,42—0,57 mm long. Supraspore approximately as high as the infraspore or shorter. Basic fl oats 9. Lower fl oats 1,5 times smaller than the upper ones. Cap partially covering the supraspore. Columella present. Collar narrow to almost indistinct. Suprafi losum extensive. Infraspore surface fi nely granulate with dense conical to elongated rugged outgrowths formed by merging and vertical enlargement of adjacent grains. Infrafi losum absent or present. Massulae distinctly compressed, medium-sized, 0,10—0,13 mm in diameter, with short, 0,04—0,06 mm, nonseptate glochidia. Massula comprising less than 10 microspores.

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