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Bancroftiastrobus
Genus Bancroftiastrobus G.W. Rothwell, G.K. Mapes, Stockey, J. Hilton Int. J. Pl. Sci., 174(6): 938. 3 Jun 2013
- Name
- Bancroftiastrobus
- Rank
- Genus
- Authors (Pub.)
- Rothwell G. W.
Mapes G.
Stockey R. A.
Hilton J.
- Publication
- Diversity of ancient conifers: the Jurassic seed cone Bancroftiastrobus digitata gen. et sp. nov. (Coniferales) [2013/6]
- Journal
- International Journal of Plant Sciences
- Volume
- 174
- Issue
- 6
- Page number
- 938
- Year
- 2013
- Parent Taxon
- [Class] Pinopsida
- Fossil Status
- cones (ovuliferous)
- Type
- Bancroftiastrobus digitata
- Diagnosis
- Cylindrical conifer seed cone with large, helically arranged ovuliferous scales subtended by short bracts, bearing two inverted adaxial seeds per ovuliferous scale; bract free from scale at tip. Ovuliferous scales with abaxial
plications in midregion, dividing distally into free lobes. Cone axis continuous woody cylinder surrounding parenchymatous pith; numerous resin canals in cortex, extending into bract/scale complexes both abaxial and adaxial to vascular traces. Vascular tissue to bract diverging as prominent terete bundle, separating from stele immediately below large inverted-U-shaped scale trace; more distally, scale trace flattening and dividing into single row of C-shaped, adaxially convex woody bundles. Seeds oval, unwinged, with apparent 180 rotational symmetry, separated by massive interseminal ridge.
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