Biology:Ticoa
| Ticoa | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae
|
| (unranked): | |
| (unranked): | |
| Order: | |
| Genus: | †Ticoa S.Archang.[1]
|
| Species | |
| |
Ticoa is an extinct genus originally assigned to the Cycadales[1] from the Early Cretaceous of Argentina , Chile , and Antarctica. Other authors view this genus as a member of the polyphyletic "seed ferns".[2]
Taxonomy
The genus was erected by Sergio Archangelsky based on material from the Anfiteatro de Ticó formation.[1] The genus first comprised two species, T. harrisii and T. magnipinnulata, with T. lamellata being described from the Bajo Grande locality in Patagonia, Argentina.[3] The species T. magallanica was described from the Springhill formation in Chile.[4] T. jeffersonii was described from Hope Bay in Antarctica.[5] T. lanceolata was described much later from the Anfiteatro de Ticó formation .[6]
Description
Ticoa includes large, bipinnate or tripinnate leaves with pecopteroid pinnules and a robust rachis. The cuticle, either hypostomatous or amphistomatous, presents large stomata sunken in a pit formed by multiple subsidiary and encircling cells.
References
- ↑ 1.0 1.1 1.2 Archangelsky, Sergio (1963). "A new Mesozoic flora from Ticó, Santa Cruz Province, Argentina.". Bulletin of the British Museum (Natural History), Geology 8 (2): 45–62. doi:10.5962/p.313876.
- ↑ McLoughlin, Stephen (2001). "The breakup history of Gondwana and its impact on pre-Cenozoic floristic provincialism" (in en). Australian Journal of Botany 49 (3): 271–300. doi:10.1071/bt00023. ISSN 1444-9862. https://www.publish.csiro.au/bt/bt00023.
- ↑ Archangelsky, Sergio (1966). "New gymnosperms from the Tico Flora, Santa Cruz Province, Argentina". Bulletin of the British Museum (Natural History), Geology 13 (5): 259–295. doi:10.5962/p.313841.
- ↑ Archangelsky, Sergio (1976). "VEGETALES FOSILES DE LA FORMACION SPRINGHILL, CRETACICO, EN EL SUBSUELO DE LA CUENCA MAGALLANICA, CHILE" (in es). Ameghiniana 13 (2): 141–158. ISSN 1851-8044. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1490.
- ↑ Gee, Carole T. (May 1987). Revision of the early Cretaceous flora from Hope Bay, Antarctica. https://repositories.lib.utexas.edu/handle/2152/19377.
- ↑ Villar De Seoane, Liliana (2005-08-01). "New cycadalean leaves from the Anfiteatro de Ticó Formation, Early Aptian, Patagonia, Argentina" (in en). Cretaceous Research 26 (4): 540–550. doi:10.1016/j.cretres.2005.02.004. ISSN 0195-6671. https://www.sciencedirect.com/science/article/abs/pii/S0195667105000650.
Wikidata ☰ Q106696145 entry
 |  |
