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Retitricolporites chubutensis

Magnoliopsida

Taxonomy
Retitricolporites chubutensis was named by Archangelsky (1973). It is considered to be a form taxon. Its type specimen is Holotype: p.m. 1006; coord. 55/94.2. Stored at Museo de La Plata, Paleobotanical division., a microspore (Pollen grain), and it is a compression preserving soft parts. Its type locality is Puerto Visser, which is in a Danian terrestrial horizon in the Salamanca Formation of Argentina.

Synonymy list
YearName and author
1973Retitricolporites chubutensis Archangelsky

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RankNameAuthor
kingdomPlantae
phylumSpermatophyta
classMagnoliopsidaCronquist et al. 1996
RankNameAuthor
genusRetitricolporitesVan der Hammen and Wymstra 1964
specieschubutensis

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.

†Retitricolporites chubutensis Archangelsky 1973
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Diagnosis
ReferenceDiagnosis
Archangelsky 1973Grano subprolado; colpos llegando cerca de los polos, engrosados en la región ecuatorial donde delimitan poros lalongados. Exina semitectada, perreticulada, compuesta por una capa basal y una capa externa, a veces más gruesa en el ecuador; columelas de base circular que distalmente se ensanchan y fusionan formando un retículo; tectum a veces presente. Retículo de mallas poligonales, más desarrolladas en el ecuador, en los mesocolpios, disminuyendo muy gradualmente hacia los colpos y los polos.
Measurements
partNmeanminimummaximummedians.d.
Exine diameter10.002----
Lumens diameter10.002----
Pollen grain diameter20.0240.0200.0290.0250.006

No ecological data are available

Age range: base of the Maastrichtian to the top of the Late/Upper Eocene or 72.10000 to 33.90000 Ma

Collections (31 total)


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.1 - 66.0Argentina (Chubut) Retitricolporites chubutensis (31653 151452 199410)
Danian66.0 - 61.6Argentina (Salta) Retitricolporites chubutensis (153433)
Danian66.0 - 61.6Argentina (Chubut) Retitricolporites chubutensis (136505 136508 151454 151455 151456 151457 151459 type locality: 167921 167922)
Danian66.0 - 61.6Argentina (Buenos Aires) Retitricolporites chubutensis (168419 168420 168421 168422 168423 168424 168425 168426 168427 168430 168431 168432 168433 168541 168547)
Paleocene66.0 - 56.0Argentina (Chubut) Retitricolporites chubutensis (136506)
Early/Lower Eocene55.8 - 48.6Argentina (Neuquén) Retitricolporites chubutensis (171385)
Middle Eocene - Late/Upper Eocene47.8 - 33.9Argentina (Neuquén) Retitricolporites chubutensis (136911)