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Otozamites patagonicus
Taxonomy
Otozamites patagonicus was named by Villar de Seoane (2001). It is not extant. It is considered to be a form taxon. Its type locality is Springhill- Estancia El Salitral, which is in a Hauterivian/Barremian terrestrial sandstone in the Springhill Formation of Argentina.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Otozamites patagonicus Villar de Seoane p. 465 figs. Fig. 3, 4a-c |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Otozamites patagonicus Villar de Seoane 2001
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Villar de Seoane 2001 | 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. |