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Classopollis patagonicus

Equisetopsida - Cheirolepidiaceae

Discussion

Etymology: The epithet patagonicus refers to the Patagonian region

Taxonomy
Classopollis patagonicus was named by De Benedetti et al. (2023). Its type specimen is MPEF-PA 472 (Plate I, 10), a microspore (Pollen grain), and it is a 3D body fossil. Its type locality is Cerro Bosta (La Colonia paleobotany), which is in a Maastrichtian marginal marine horizon in the La Colonia Formation of Argentina.

Sister species lacking formal opinion data
C. chateaunovi, C. harrisii

Synonymy list
YearName and author
2023Classopollis patagonicus De Benedetti et al. p. 3 figs. Plate I, figs. 10–16

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RankNameAuthor
kingdomPlantae
phylumTracheophyta(Sinnott 1935)
—Pteridobiotina
superphylumPteridophytanae
phylumEquisetophytaScott 1900
RankNameAuthor
classEquisetopsidaAgardh 1825
subclassPinidae
familyCheirolepidiaceaeTurutanova-Ketova 1963
genusClassopollisPflug 1953
speciespatagonicus

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.

†Classopollis patagonicus De Benedetti et al. 2023
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Diagnosis
ReferenceDiagnosis
F. De Benedetti et al. 2023Pollen grain oblate, equatorial outline circular. Distal pole with a subcircular cryptopore ca. 7–16 μm diameter. Proximal pole sometimes with a triradiate scar and a thin triangular area. Subequatorial circular furrow ca. 1–2 μm wide. Equatorial thickening with 5–11 striations, often anastomosed. Exine two layered; sexine with a vermiculate to pseudoreticulate structure and a microechinate sculpture; microechinae ca. 0.1–0.4 μm long.
Measurements
No measurements are available
No ecological data are available

Age range: Maastrichtian or 72.10000 to 66.00000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Cretaceous - Early/Lower Paleocene100.5 - 61.7Argentina (Chubut) Classopollis patagonicus (195707)
Maastrichtian72.1 - 66.0Argentina (Chubut) Classopollis patagonicus (31653 type locality: 199410)