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Crassiorites australis
Taxonomy
Crassiorites australis was named by Zamaloa and Romero (1990). It is considered to be a form taxon. Its type specimen is Pollen grain (Triporate pollen grains) and is a 3D body fossil. Its type locality is Alfa dell, which is in an Eocene estuary/bay sandstone in the Cullen Formation of Argentina. It is the type species of Crassiorites.
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Crassiorites australis Zamaloa and Romero p. 127 figs. Pl. 2, figs 11-16 |
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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.
†Crassiorites australis Zamaloa and Romero 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. C. Zamaloa and E. J. Romero 1990 | Description. Triporate pollen grains, oblate, triangular to subtriangular amb, with straight sides and rounded angles. Pores equatorially elongated, approximately 8 gm long. Exine psilate, scabrate around the pores and in polar areas. External layer of the exine thin (less than 1 gm). Internal layer of the exine strongly thickened around the pores, with lateral (equatorial) thickening or ridge. The polar area is subcircular to subtriangular in shape and has a thinner wall. Viscin threads present in the surface of the pollen grain. Equatorial diameter 34-38 gm (15 specimens measured). |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: base of the Late/Upper Eocene to the top of the Middle Miocene or 37.71000 to 11.63000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eocene | Argentina (Tierra del Fuego) | Crassiorites australis (type locality: 153448) | |
| Late/Upper Oligocene - Middle Miocene | Argentina (Tierra del Fuego) | Crassiorites australis (169381) |