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Nothofagidites americanus

Angiospermae - Fagales

Taxonomy
Nothofagidites americanus was named by Zamaloa (1992) [Botanical affinity: Fagaceae (Fagaceae (Nothofagus (tipo menziessi)]. It is a 3D fossil preserving soft parts.

Sister species lacking formal opinion data
N. deminutus, N. emarcidus, N. matauraensis, N. vansteenisii

Synonymy list
YearName and author
1992Nothofagidites americanus Zamaloa

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RankNameAuthor
kingdomPlantae
phylumSpermatophyta
classAngiospermae
—Rosids
—Eurosids
RankNameAuthor
—Fabid
orderFagales
genusNothofagiditesPotonié 1960
speciesamericanusZamaloa 1992

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.

†Nothofagidites americanus Zamaloa 1992
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Diagnosis
ReferenceDiagnosis
Zamaloa 1992Pollen grain free, oblate, isopolar, angulaperturate, spinulate. Arab polygonal, 38 50 um in diameter, sides straight to slightly convex. Apertures 5-9 as narrow gaps 14-23 un long, with v-shaped ends, margins unthickened. Exine thin, about 0.5 un, stratification unresolved. Spinulate sculpture, small conical spinules, about 0.5 um high and 0.4 un in basal diameter, uniformly arranged with high density, slightly protruding past outline of grain in optical section (15 specimens measured). Holotype description: Pollen grain oblate, situated in polar view, isopolar, angulaperturate. Amb polygonal, 44 um in diameter, with straight sides. Apertures comprising 7 longitudinally aligned colpi that extend about 8 lain in average towards each pole; pointed ends, margins unthickened, colpi length/equatorial diameter (l/E) ratio 0.37. Exine about 0.5 um thick, with spinulate sculpture; spinules about 0.5 un high and 0.3 0.4 um in basal diameter and spacing 0.5(0.9)1.8 un apart. Small spinules randomly aligned along apertural margins.
Measurements
No measurements are available
Diet: "photoautotroph"p
Created: 2011-07-22 00:04:15
Modified: 2011-07-21 09:04:15
Source: p = phylum
Reference: Kiessling 2009

Age range: base of the Late/Upper Eocene to the top of the Middle Miocene or 37.20000 to 11.60800 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Eocene - Oligocene56.0 - 23.03Argentina (Santa Cruz) Nothofagidites americanus (143493)
Late/Upper Eocene37.2 - 33.9Argentina (Tierra del Fuego) Nothofagidites americanus (153449)
Late/Upper Eocene - Early/Lower Miocene37.2 - 15.97Argentina (Santa Cruz) Nothofagidites americanus (143492)
Late/Upper Oligocene28.4 - 23.03Argentina (Santa Cruz) Nothofagidites americanus (151587)
Late/Upper Oligocene - Middle Miocene28.4 - 11.608Argentina (Tierra del Fuego) Nothofagidites americanus (169381)
Late/Upper Oligocene - Miocene28.4 - 5.333Argentina Nothofagidites americanus (169468)
Middle Miocene - Early/Lower Pliocene15.97 - 3.6South Atlantic (Falkland Islands) Nothofagidites americanus (169355 169356)