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Allicospermum uzbekistanicum
Allicospermum uzbekistanicum Nosova in Nosova, Hval' Rev. Palaeobot. Palynol., 247: 27. 10 Aug 2017
- Name
- Allicospermum uzbekistanicum
- Rank
- Species
- Generic Name
- [Genus] Allicospermum
- Authors (Name)
- Nosova N. V.
- Authors (Pub.)
- Nosova N. V.
Hval' A. V.
- Publication
- New findings of the seeds Allicospermum Harris (gymnosperms) from the Middle Jurassic of Angren, Uzbekistan [2017/8]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 247
- Page number
- 27
- Year
- 2017
- Fossil Status
- seeds
- Stratigraphy
- Middle Jurassic
- Strat. comment
- Angren Formation
- Location
- Angren, Tashkent viloyat, Uzbekistan
- Paleoregion
- Eurasia (Central Asia)
Data for Holotypus
- Repository
- Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
- Repository Number
- spec. 821/16
- Diagnosis
- Seeds ovate in longitudinal outline, with rounded base
and mucronate apex. Seed coat comprising a sarcotesta and a
sclerotesta. Cuticle of outer epidermis thick. Cells of outer epidermis
generally isodiametric with rounded angles, more elongated near the
seed apex; anticlinal walls straight and thick; periclinal walls smooth,
sometimes convex; stomata lacking. Nucellar cells elongated, tetragonal,
with rounded corners. Megaspore membrane comprising a patterned
layer and a foot layer. Patterned layer composed of generally
unbranching sinuous bacula, arranged parallel to the foot layer.
