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Krassilovia
Genus Krassilovia F. Herrera, G. Shi, A.B. Leslie, P. Knopf, Ichinn., Mas. Takah., P.R. Crane, Herendeen Int. J. Pl. Sci., 176(8): 793. Oct 2015
- Name
- Krassilovia
- Rank
- Genus
- Authors (Pub.)
- Herrera F.
Shi G.-L.
Leslie A. B.
Knopf P.
Ichinnorov N.
Takahashi M.
Crane P. R.
Herendeen P. S.
- Publication
- A new Voltzian seed sone from the Early Cretaceous of Mongolia and its implications for the evolution of ancient conifers [2015/10]
- Journal
- International Journal of Plant Sciences
- Volume
- 176
- Issue
- 8
- Page number
- 793
- Year
- 2015
- Parent Taxon
- [Order] Voltziales
- Fossil Status
- cones (female)
- Type
- Krassilovia mongolica
- Diagnosis
- Seed cone with helically arranged, imbricated, and tightly interlocked bract-scale complexes on a slender central axis. Central axis of the cone fusiform with prominent abscission scars. Each bract-scale complex consists of an inconspicuous bract partially fused to the stalk of an ovuliferous scale. Ovuliferous scale with five conspicuous spinetipped lobes. In well developed specimens, three of the lobes are distal on the ovuliferous scale (always pointing away from the cone base), while the other two are proximal (always pointing toward the cone base). Five to three seed scars are arranged in an irregular arc with respect to each of the lobes of the ovuliferous scale on the adaxial surface. Seeds inverted and winged, symmetrical to asymmetrical with a short micropyle. Seed wing formed from the integument.
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