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Araucaria huncoensis
Araucaria huncoensis Ross.-Harris in Ross.-Harris, Wilf, Escapa, Andr.-Colombo Amer. J. Bot., 107(5): 11 [816]. 25 May 2020
- Name
- Araucaria huncoensis
- Rank
- Species
- Generic Name
- [Genus] Araucaria
- Authors (Name)
- Rossetto-Harris G.
- Authors (Pub.)
- Rossetto-Harris G.
Wilf P.
Escapa I. H.
Andruchow-Colombo A.
- Publication
- Eocene Araucaria Sect. Eutacta from Patagonia and floristic turnover during the initial isolation of South America [2020/5]
- Journal
- American Journal of Botany
- Volume
- 107
- Issue
- 5
- Page number
- 11 [816]
- Year
- 2020
- Fossil Status
- strobili (ovuliferous)
- Stratigraphy
- Ypresian
- Strat. comment
- La Huitrera Formation
- Location
- quarry LH27, Laguna del Hunco, Tufolitas Laguna del Hunco, northwest Chubut Province, Argentina
- Paleoregion
- America (South)
Data for Holotypus
- Repository
- Museo Paleontologico Egidio Feruglio, Trelew, Argentina
- Repository Number
- MPEF-Pb 10556
Data for Paratypus
- Repository
- Museo Paleontologico Egidio Feruglio, Trelew, Argentina
- Repository Number
- Leafy branch segments with acicular falcate foliage:
MPEF-Pb 10587–10590, 10592–10594, 10596–10599 (quarry
LH13); 10600, 10604 (LH15); 10607, 10608 (LH27); 10609 (LH25);
10630 (LH13); 10633 (LH27); 10640 (LH13). Leafy branch segments
with ovate imbricate foliage: MPEF-Pb 10580 (LH6); 10581
(LH13); 10582 (LH25); 10583–10586 (LH27); 10591 (LH6); 10595
(LH13); 10601 (float specimen); 10602 (LH6); 10603 (LH22); 10605
(LH13); 10606 (LH25), 10610–10613 (LH27); 10626 (LH31), 10629
(LH29). Ovuliferous complexes: MPEF-Pb 10510 (LH6); 10511,
10512 (LH2); 10513, 10514 (LH13); 10515 (LH6); 10516 (LH2);
10517–10520 (LH13); 10521 (LH22); 10522 (LH13); 10523 (LH6);
10524–10529 (LH13); 10530 (LH20); 10531 (float specimen);
10532–10534 (LH13); 10535 (LH25); 10536, 10537 (LH27); 10538–
10540 (LH13); 10541 (LH6); 10542 (LH27); 10543, 10544 (LH13);
10545 (LH27); 10546 (LH20); 10547 (LH13); 10548 (LH15); 10549
(LH13); 10550 (LH15); 10551 (LH27); 10552 (LH25); 10553
(LH27); 10554 (LH13); 10555 (LH6); 10556, 10557 (LH27); 10558
(LH6); 10559 (LH2); 10560 (LH13); 10561 (LH22); 10562 (LH2);
10563 (LH27); 10564 (LH2); 10565, 10566 (LH13); 10567–10574
(LH27); 10575–10579, 10621–10623 (AL1); 10624 (LH31); 10625
(LH29); 10627, 10628 (LH29); 10631 (LH13); 10632, 10634 (LH27);
10635, 10636 (LH13); 10637 (LH29); 10638 (LH27); 10639 (LH29);
10640 (LH13); 10641 (LH27); 10642 (LH29); 10643 (LH13); 10644
(LH29); 10645 (LH13); 10646, 10647 (LH13); 10648, 10649 (LH28);
10650 (LH13); 10651 (LH29); 10652, 10653 (LH13). Pollen cones:
MPEF-Pb 10614 (LH27); 10615 (LH6); 10616 (LH27); 10617
(LH13); 10618, 10619 (LH27).
- Diagnosis
- Ovuliferous complexes are narrowly flabellate-cuneate, with narrow, angular lateral extensions and ratios of maximum length to width close to one. Ovuliferous complex apophysis rounded, ligule short, broad triangle. Leafy branches dimorphic with acicular falcate and ovate imbricate foliage types,
stomata perpendicularly oriented to the long axis of the leaf.