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Rhoipites baculatus
Taxonomy
Rhoipites baculatus was named by Archangelsky (1973). It is considered to be a form taxon. Its type specimen is Holotype: p.m. 1009; coord. 39.1/95.9. Stored at Museo de La Plata, Paleobotanical division., a microspore (Tricolporate pollen), and it is a 3D fossil preserving soft parts. Its type locality is Cerro Abigarrado, which is in a Danian terrestrial shale in the Salamanca Formation of Argentina.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Rhoipites baculatus Archangelsky |
| 2002 | Rhoipites baculatus Mautino and Anzótegui |
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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.
†Rhoipites baculatus Archangelsky 1973
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Archangelsky 1973 | Grano prolado a subprolado. Colpos llegando cerca de los polos, con visible engrosamiento o margo, más desarrollado en el sector ecuatorial. Poros aparentemente algo lalongados, de contornos poco nítidos. Exina compuesta por dos capas, tectada. Capa interna del mismo espesor o algo más delgada que la externa. Columelas uniformemente distribuidas, formando en general un microretículo con mallas de 0,5 µ, o menos, de diámetro. Tectum liso. Exina normalmente de grosor parejo, a veces levemente más gruesa en los polos, donde las columelas son algo más largas. | |
| L. R. Mautino and L. M. Anzótegui 2002 | Pollen grain prolate to sub-spheroidal. Colpi almost reaching the poles with ridges more developed in the equatorial region. Ora lalongate (2-5μm X 3.5-7.5 μm), sometimes obscured. Exine tectate formed by two layers. Nexine of the same thickness or thiner than sexine. Columellae forming an homogeneous microreticulum with lumina of approximately 0.5 μm or less in diameter. Smooth tectum. Exine of uniform thickness (1-1.5 μm) or slightly thicker at poles, where the columellae are slightly higher. |
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| Pollen grain diameter | 1 | 0.026 |
No ecological data are available
Age range: base of the Maastrichtian to the top of the Late/Upper Miocene or 72.10000 to 5.33300 Ma
Collections (33 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Cretaceous - Early/Lower Paleocene | Argentina (Chubut) | Rhoipites baculatus (195707) | |
| Maastrichtian | Argentina (Santa Cruz) | Rhoipites baculatus (168708 168710) | |
| Maastrichtian | Argentina (Chubut) | Rhoipites baculatus (31653 199410) | |
| Danian | Argentina (Chubut) | Rhoipites baculatus (type locality: 136508 167922 172887) | |
| Danian | Argentina (Buenos Aires) | Rhoipites baculatus (168419 168420 168421 168422 168423 168424 168425 168426 168427 168428 168431 168432 168541) | |
| Early/Lower Paleocene - Danian | Antarctica (Seymour Island) | Rhoipites baculatus (167469) | |
| Early/Lower Eocene | Argentina (Neuquén) | Rhoipites baculatus (171385) | |
| Middle Eocene - Late/Upper Eocene | Argentina (Neuquén) | Rhoipites baculatus (136911) | |
| Late/Upper Eocene | Argentina (Tierra del Fuego) | Rhoipites baculatus (153448) | |
| Late/Upper Oligocene | Argentina (Santa Cruz) | Rhoipites baculatus (151587) | |
| Late/Upper Oligocene - Early/Lower Miocene | Argentina (Chubut) | Rhoipites baculatus (143211 143212 143213 143214) | |
| Late/Upper Oligocene - Miocene | Argentina | Rhoipites baculatus (169468) | |
| Middle Miocene | Argentina (San Juan) | Rhoipites baculatus (144061) | |
| Late/Upper Miocene | Argentina (Catamarca) | Rhoipites baculatus (137142) |