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Otozamites patagonicus
Otozamites patagonicus Villar-Seoane Cretac. Res., 22(4): 463. Aug 2001
- Name
- Otozamites patagonicus
- Rank
- Species
- Generic Name
- [Genus] Otozamites
- Authors (Pub.)
- de Seoane L. V.
- Publication
- Cuticular study of Bennettitales from the Springhill Formation, Lower Cretaceous of Patagonia, Argentina [2001/8]
- Journal
- Cretaceous Research
- Volume
- 22
- Issue
- 4
- Page number
- 463
- Year
- 2001
- Fossil Status
- leaves
- Stratigraphy
- Lower Cretaceous
- Strat. comment
- Springhill Formation
- Location
- Estancia El Salitral, Santa Cruz Province, Argentina
- Paleoregion
- Gondwana (S America)
Data for Holotypus
- Repository
- Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Buenos Aires, Argentina
- Repository Number
- BA Pb 11660; BA Pb Pm 394, 395, 396, 397, 398; BA Pb MEB 75; and BA Pb MET 171
- Diagnosis
- Leaves imparipinnate. Pinnae alternate, elongated, up to 1.2 cm long and 0.4 cm wide, with entire margins and rounded apex. Veins radiate asymmetrically from region of attachment. Adaxial epidermis smooth with rectangular to isodiametric cells 69 m long and 39 m wide. Abaxial epidermis densely ornamented with compound and simple papillae. Epidermal cells 74 m long and 37 m wide, rectangular to isodiametric with very sinuous walls. Leaves hypostomatic. Paracytic stomatal apparatus
up to 70 m long and 55 m wide; each subsidiary cell with two marginal papillae. Ultrastructurally, cuticular membrane formed by an upper layer
0.50 m thick; a middle layer 4.50 m thick; and a lower layer 0.25 m thick.
