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Paleoazolla patagonica
Paleoazolla patagonica A. Archang., Carlie J. Phipps, T.N. Taylor, Ed.L. Taylor Amer. J. Bot., 86(8): 1201. 16 Aug 1999
- Name
- Paleoazolla patagonica
- Rank
- Species
- Generic Name
- [Genus] Paleoazolla
- Authors (Pub.)
- Archangelsky A.
Phipps C. J.
Taylor T. N.
Taylor E. L.
- Publication
- Paleoazolla, a new heterosporous fern from the Upper Cretaceous of Argentina [1999/8]
- Journal
- American Journal of Botany
- Volume
- 86
- Issue
- 8
- Page number
- 1201
- Year
- 1999
- Parent Taxon
- [Genus] Paleoazolla
- Fossil Status
- sporae dispersae (megaspores & microspores)
- Stratigraphy
- Maastrichtian
- Strat. comment
- La Colonia Formation
- Location
- Cerro Buitre, NE Chubut Province, Argentina
- Paleoregion
- America (South)
Data for Holotypus
- Repository
- Museo Paleontologico Egidio Feruglio, Trelew, Argentina
- Repository Number
- MPEF PALIN 1
- Diagnosis
- Megaspore apparatus up to 950 mm long, 700 mm wide, composed of an ellipsoidal, commonly flattened megaspore and a complex of three or four floats; megaspore up to 650 mm long, 350 mm wide, and 115 mm thick; floats nearly spherical, 200–350 mm in diameter and attached directly to one end of the megaspore; float divided into a smooth inner zone up to 6 mm thick and an irregularly alveolate outer zone up to 25 mm thick covered by multibarbed hairs (glochidia); megaspore wall up to 52 mm thick, divided into a 7–10 mm thick exine and a 28–42 mm thick perine; perine organized into a dense spongy endoperine 4–10 mm thick and a loosely organized, irregularly packed 18–20 mm thick exoperine covered by a 6–12 mm thick infrafilosum. Massulae irregular, 350–490 mm diameter, with a pseudocellular alveolar structure from which the glochidia arise as external projections; glochidia multibarbed, up to 60 mm long, and 5 mm wide, nonseptate, commonly with irregularly distributed anchor-shaped tips adpressed to the massula surface; numerous rounded, inaperturate microspores per massula, microspores 42–63 mm in diameter.
