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Pararaucaria delfueyoae
Pararaucaria delfueyoae Escapa, Cúneo, G.W. Rothwell, Stockey Int. J. Pl. Sci., 174(3): 460. Mar - Apr 2013
- Name
- Pararaucaria delfueyoae
- Rank
- Species
- Original spelling
- delfueyoi
- Generic Name
- [Genus] Pararaucaria
- Authors (Pub.)
- Escapa I. H.
Cúneo N. R.
Rothwell G. W.
Stockey R. A.
- Publication
- Pararaucaria delfueyoi sp. nov. from the Late Jurassic Cañadón Calcáreo Formation, Chubut, Argentina: Insights into the Evolution of the Cheirolepidiaceae [2013/3-4]
- Journal
- International Journal of Plant Sciences
- Volume
- 174
- Issue
- 3
- Page number
- 460
- Year
- 2013
- Fossil Status
- cones
- Stratigraphy
- Tithonian
- Strat. comment
- Cañadón Calcáreo Formation
- Location
- Estancia Vilán, Chubut Province, Patagonia, Argentina
- Paleoregion
- America (South)
Data for Holotypus
- Repository
- Museo Paleontologico Egidio Feruglio, Trelew, Argentina
- Repository Number
- MPEF-Pb 3627
- Diagnosis
- Cylindrical cones up to 8 cm long, 3–4 cm wide; slender axis with helically arranged bract/scale complexes consisting of large ovuliferous scale subtended by broad, flattened bract. Bract and ovuliferous scale separate near base. Scale trace accompanied by sclerenchyma bundle with reniform shape basally, separating to form two triangular bundles before terminating near level of seed micropyle. Pocket-forming tissue of ovuliferous scale overarching and enclosing seeds, thinning toward base of scale and terminating near level of seed micropyle. Ovuliferous scales bearing two inverted seeds ;11 mm long, oriented parallel to long axis of scale, with elongated micropyle curving toward lateral margin of scale. Integuments multilayered, with one or two layers of palisade below epidermis, several layers of elongated sinuous cells internally. Nucellus with cellular apex.
