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 © 2014-2025

IDNAME urn:idName:ifpni.org:species:1F52D20A-7444-3418-DAB7-C2D9B61EB792 species
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Anastrophyllum rovnoi

Anastrophyllum rovnoi Mamontov, Heinrichs, Váňa in Mamontov, Heinrichs, Váňa, Ignatov, Perkovsky Arctoa, 24(1): 45. 22 Jan 2015
Name
Anastrophyllum rovnoi
Rank
Species
Generic Name
[Genus] Anastrophyllum
Authors (Name)
Mamontov Yu. S. Heinrichs J. Váňa J.  
Authors (Pub.)
Mamontov Yu. S. Heinrichs J. Váňa J. Ignatov M. S. Perkovsky E. E.  
Publication
Hepatics from Rovno amber (Ukraine), 3 [2015/1]
Journal
Arctoa
Volume
24
Issue
1
Page number
45
Year
2015
Fossil Status
thallus
Stratigraphy
Priabonian
Strat. comment
35–37 Ma; in amber
Location
Klesov (Pugach quarry), Vladimirets District, Rovno Region, Ukraine
Paleoregion
Eurasia (Europe)
Data for Holotypus
Repository
Schmalhausen Institute of Zoology (SIZK)., National Academy of Sciences of Ukraine, Kyiv, Ukraine
Repository Number
SIZK-K-915-F
Diagnosis
Sterile, 2.2 mm long and up to 0.8 mm wide shoot. Stem 110–125 m wide, cortical cells rectangular, 9–1318–22(-29) m, walls moderately thickened. Rhizoids on lower portion of ventral stem surface, as long as leaves, colorless, scarce, spreading at right angle to stem; leaves remotely arranged, bilaterally inserted and oriented, thus distichous, alternating, succubous, in ventral half with obliquely arcuate insertion line, not decurrent ventrally. Lower two pairs of leaves larger than upper ones, 250–330425–60 m, obliquely inserted, plane or somewhat concave, perpendicularly spreading, elliptical, entire-margined, bilobed to 0.4 of leaf length, sinus obtuse to rounded, lobes sub-equal, triangular, 9–11 cells wide at base, apex obtuse to somewhat rounded. Subsequent two pairs of leaves transversely inserted, concave-conduplicate, lamina spreading from stem at right angle, but bases spreading at an angle of 40–45°. Upper three pairs of leaves decreasing in length towards shoot apex, 270 m to 110 m, thus substantially smaller than lowermost leaves, transversely inserted, somewhat concave to almost flat, erect spreading, with angle of leaf-stem divergence decreasing from 70° to 20° towards shoot apex, uppermost leaves therefore appressed to stem. Leaf cells arranged in irregular rows parallel to leaf margins, conspicuously elongated in basal and lower median portions of lamina, with distinctly incrassate walls and nodulose trigones. Cells of lobe apex and margins elongate to rounded-quadrate, 121515–22 m, central leaf cells larger, rounded-elongate, 12–1822–26 m. Cuticle smooth. Underleaves absent. Gemmae absent.

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