Todea amissa

Name

Todea amissa

Rank

Species

Generic Name

[Genus] Todea

Authors (Name)

Carvalho M. R.  

Authors (Pub.)

Carvalho M. R. Wilf P. Hermsen E. J. Gandolfo M. A. Cúneo N. R. Johnson K. R.  

Publication

First record of Todea (Osmundaceae) in South America, from the early Eocene paleorainforests of Laguna del Hunco (Patagonia, Argentina) [2013/9]

Journal

American Journal of Botany

Volume

100

Issue

9

Page number

1835

Year

2013

Fossil Status

foliage (fertile)

Stratigraphy

Ypresian

Strat. comment

52.2

Location

Tufolitas Laguna del Hunco, Chubut, Argentina

Paleoregion

America (South)

Data for Holotypus

Repository

Museo Paleontologico Egidio Feruglio, Trelew, Argentina

Repository Number

MPEF-Pb 5700

Num

Fig. 3C

Pub.

First record of Todea (Osmundaceae) in South America, from the early Eocene paleorainforests of Laguna del Hunco (Patagonia, Argentina) [2013/9]

Data for Paratypus

Repository

Museo Paleontologico Egidio Feruglio, Trelew, Argentina

Repository Number

MPEF-Pb 5701 ( Fig. 3B ), MPEF-Pb 5702 ( Fig. 3A ), MPEF-Pb 5703 ( Fig. 3D, E ), MPEF-Pb 5704 ( Fig. 4A ) , MPEF-Pb 5705 ( Fig. 4B ), MPEF-Pb 5706–5709

Num

Fig. 3B, Fig. 3A, Fig. 3D, E, Fig. 4A, Fig. 4B

Pub.

First record of Todea (Osmundaceae) in South America, from the early Eocene paleorainforests of Laguna del Hunco (Patagonia, Argentina) [2013/9]

Diagnosis

Detached pinnate to pinnatisect-pinnatifi d frond pinnae. Pinna costa grooved and slightly curved, bearing alternate pinnules attached at (sub)acute angles. Pinnules oblongfalcate, with serrate margin, cuneate apex, and completely attached base in sterile pinnules, or slightly rounded base in fertile pinnules. Pinnule venation catadromous, arising oppositely to suboppositely from the midrib, forking in close proximity to the pinnule midrib, with each branch terminating in a tooth apex. Fertile and sterile pinnae nearly monomorphic. Fertile pinnules slightly narrower and restricted to the basal portions of the pinnae. Distribution of sporangia acrostichoid. Sporangia borne along secondary veins, covering the basal portion to the full lamina of each fertile pinnule.