Back
Gleditsioxylon riojanum
Gleditsioxylon riojanum L.C.A. Martínez in L.C.A. Martínez, Rodr.-Briz. Geobios (Lyon), 44(5): 463. 10 Nov 2011
- Name
- Gleditsioxylon riojanum
- Rank
- Species
- Original spelling
- Gleditisioxylon riojana
- Generic Name
- [Genus] Gleditsioxylon
- Authors (Name)
- Martínez L. C. A.
- Authors (Pub.)
- Martínez L. C. A.
Rodríguez-Brizuela R.
- Publication
- Gleditisioxylon riojana nov. sp. en el Neógeno de Argentina: sus relaciones paleoambientales y biogeográficas [2011/11]
- Journal
- Geobios
- Volume
- 44
- Issue
- 5
- Page number
- 463
- Year
- 2011
- Fossil Status
- stems (wood)
- Stratigraphy
- Miocene
- Strat. comment
- Formación Toro Negro
- Location
- Quebrada de la Troya, La Rioja, Argentina
- Paleoregion
- America (South)
Data for Holotypus
- Repository
- Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura, Chaco, Corrientes, Argentina
- Repository Number
- CTES PB-12371, PMP-3007, PMP-3008 & PMP-
3009
- Diagnosis
- Secondary wood. Growth rings boundaries
distinct. Semi-annular porosity. Vessels in diagonal or random
pattern. Vessels circular to subcircular in outline, solitary, in
clusters or radials multiples. Vessel elements short. Intervessel
pits small to medium, oval to circular, alternate and vestured.
Helical thickenings in vessel elements. Tyloses. Perforation
plates simple. Vessels ray-pits similar to intervessel pits. Rays
homocellular, procumbent cells, 2-6 seriate (Kribs Homogeneous
type II). Abundant axial parenchyma paratracheal
vasicentric, conuent to banded, in longitudinal section in
strands. Marginal parenchyma with prismatic crystals. Fibres
with simple pits from thin to thick-walled.