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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Malvacipollis argentina
Taxonomy
Malvacipollis argentina was named by Zamaloa and Romero (1990) [Botanical affinity: Malvaceae]. It is considered to be a form taxon. It is a 3D fossil preserving soft parts. Its type locality is Alfa dell, which is in an Eocene estuary/bay sandstone in the Cullen Formation of Argentina.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1990 | Malvacipollis argentina Zamaloa and Romero |
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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.
†Malvacipollis argentina Zamaloa and Romero 1990
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Diagnosis
Reference | Diagnosis | |
---|---|---|
Zamaloa and Romero 1990 | Pollen grain subspherical, isopolar, amb circular, triporate. Exine tectate, equinate. Nexine ca. 1 Igm thick, up to 3.5 gm thick around the pores. Sexine about 1 gm or slightly thicker, with densely packed columellae. Spines are 2-3.5 gm long, and 1.5-2.5 gm in basal diame- ter. Spines have a convex-cylindrical base, a constriction in the middle, and pointed, occasionally curved, tips. Pores circular, non-aspidate. Equatorial diameter exclusive of spines 30-42 jm (12 specimens measured). |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Late/Upper Eocene to the top of the Late/Upper Miocene or 37.20000 to 5.33300 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Eocene | Argentina (Tierra del Fuego) | Malvacipollis argentina (type locality: 153448) | |
Late/Upper Miocene | Argentina (Catamarca) | Malvacipollis argentina (137142) |