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Araucaria lefipanensis

Equisetopsida - Araucariaceae

Discussion

The specific epithet refers to the Lefipán Formation where the type material of this species was collected.

Taxonomy
Araucaria lefipanensis was named by Andruchow-Colombo et al. (2018). Its type specimen is MPEF-Pb 8297, a multi organs (Leafy branch), and it is a 3D body fossil. Its type locality is Cañadón del Loro , which is in a Maastrichtian terrestrial siltstone in the Lefipan Formation of Argentina.

Synonymy list
YearName and author
2018Araucaria lefipanensis Andruchow-Colombo et al.
2020Araucaria lefipanensis Stiles et al.

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RankNameAuthor
kingdomPlantae
phylumTracheophyta(Sinnott 1935)
—Pteridobiotina
superphylumPteridophytanae
phylumEquisetophytaScott 1900
RankNameAuthor
classEquisetopsidaAgardh 1825
subclassPinidae
familyAraucariaceaeHenckel and Hochstetter 1865
genusAraucariade Jussieu 1789
specieslefipanensis

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.

†Araucaria lefipanensis Andruchow-Colombo et al. 2018
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Diagnosis
ReferenceDiagnosis
A. Andruchow-Colombo et al. 2018Shoots bearing helically arranged, imbricated leaves; leaves dimorphic, multiveined, sessile, with entire margin and acute apex, lanceolate to ovate-lanceolate, abaxially keeled, 11.3–35.3 mm long, 4.7–12.4 mm wide. Stomata arranged in parallel discontinuous rows aligned with major axis of the leaf; stomatal apparatuses with ovate contour, four to five subsidiary cells. Cone scale complexes heart-shaped, length 14.9–18.3 mm, maximum width 11.5–20.0 mm, ligulate, with a bract tip; central body of complex cuneate in outline, woody in appearance and with longitudinal striations; lateral wings thin and slightly asymmetric; each complex bearing a single central inverted seed; seed 8.7–10.9 mm long, 4.2–5.9 mm wide.
Measurements
No measurements are available
No ecological data are available

Age range: Late/Upper Maastrichtian or 72.20000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Maastrichtian72.2 - 66.0Argentina (Chubut) Araucaria lefipanensis (type locality: 197638)