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Itajuba yansanae
Itajuba yansanae Ricardi-Branco, M. Torres, Tavares, de Souza Carvalho, P.G.E. Tavares, Arruda Campos in P. Ray Clim. Change & Reg./Loc. Resp. 191. 22 May 2013
- Name
- Itajuba yansanae
- Rank
- Species
- Generic Name
- [Genus] Itajuba
- Authors (Pub.)
- Ricardi-Branco F.
Torres M.
Tavares S. S.
de Souza Carvalho I.
Tavares P. G. E.
Arruda Campos A. C.
- Publication
- Itajuba yansanae gen and sp nov of Gnetales, Araripe Basin (Albian-Aptian) in Northeast Brazil [2013/5]
- Authors (Book)
- Ray P.
- Book
- Climate Change and Regional/Local Responses
- Page number
- 191
- Year
- 2013
- Fossil Status
- leafy stems (with reproductive organs)
- Stratigraphy
- Aptian
- Location
- Between the urban centres of Nova Olinda and Santana do Cariri, Pedra
Branca Quarry, state of Ceará, Brazil
- Paleoregion
- America (South)
Data for Holotypus
- Repository
- Paleontological Museum of Monte Alto “Prof. Antonio C. Arruda-Campos”, São Paulo, Brazil
- Repository Number
- MPMA 30-0042.03 A
- Diagnosis
- Sympodial branch system bearing terminal female cones with striate stem between all internodes with swollen nodes. Branches opposite-decussate. Xylem composed predominately of tracheids, with a few vessels (approximately 40 per mm2), both with helical thickenings; alternately distributed bordered pits. Long, thin fibre-tracheids. Uniseriate rows of
vascular rays composed of procumbent cells. Reproductive shoot with female cones in terminal branchlets, 1 ovule/seed per cone, surrounded by two pairs of connate bracts. Ovate seed with ornamented external surface.
