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Figure 1.

Stratigraphic and geographic location with details of the San Ramón section of the Lefipán Formation (right).

Modified from Scasso et al. [16].

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Figure 2.

Spore and pollen diagram shown as percent abundances per sample from the Lefipán Formation.

The CONISS cluster dendrogram at right determines distinct, stratigraphically ordered palynomorph groups. Note large Danian increase in Classopollis abundance.

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Figure 3.

Results of non-metric multidimensional scaling (NMDS) ordination of spore-pollen data from the Lefipán Formation.

Sample numbers and cluster groups as in Figure 2. Stress = 9.99.

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Figure 4.

Spore-pollen evenness (Pielou's J, left) and diversity (Shannon-Wiener Index, H', right), from the Lefipán Formation.

(Figure 1).

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Figure 5.

Rarefaction results from spore-pollen counts of selected samples from the Lefipán Formation (Figure 1).

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Figure 6.

Selected characteristic species from the Maastrichtian (A–H) and Danian (I–X) samples.

Scale bar equals 5 µm, except in figures A, E, F and G where scale bar is equal 10 µm. Authorities are given in Table S1. A, Grapnelispora evansii (MPEF–Palin 102c: V32–4); B, Arecipites minutiscabratus (MPEF–Palin 101b: Q31–1); C, Lewalanipollis senectus (MPEF–Palin 101a: S47); D, Liliacidites regularis (MPEF–Palin 101b: N24–1); E, Longapertites aff. vaneendenburgi (MPEF–Palin 102a: P29); F, Propylipollis ambiguus (MPEF–Palin 102a: K33–1); G, Azollopsis tormentosa (MPEF–Palin 102a: Q33–4); H, Quadraplanus brossus (MPEF–Palin 102d: N37–1); I, Classopollis sp. (MPEF–Palin 103a: D43–4); J, Haloragacidites harrisii (MPEF–Palin 107b: F49); K, Proteacidites sp. C (MPEF–Palin 107b: P39–1); L, cf. Cicotriporites sp. (MPEF–Palin 103b: D33–1); M, Neoraistrichia sp. A (MPEF–Palin 103a: N39–3); N, Senipites tercrassata (MPEF–Palin 103b: M29); O, Retritricolporites sp. 1 (MPEF–Palin 108b: Y26–3); P, Peninsulapollis gillii (MPEF–Palin 109b: N28–4); Q, Ulmoideipites patagonicus (MPEF–Palin 108 b: M49–3); R, Bombacacidites cf. isoreticulatus (MPEF–Palin 108 b: L51–2); S, Rousea microreticulata (MPEF–Palin 104b: Z35/Z36); T, Nothofagidites dorotensis (MPEF–Palin 107a: V37); U, Rosannia manika (MPEF–Palin 106 b: W45); V, Propylipollis reticuloscabratus (MPEF–Palin 110d: M36–1); W, Ericipites microtectatum (MPEF–Palin 110d: F38–3); X, Nothofagidites fuegiensis (MPEF–Palin 109 b: F23–4).

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Figure 7.

Ancient landscapes across the Cretaceous/Paleogene time interval in central Patagonia.

Main floristic types from the: Maastrichtian (left): Ferns, palms, conifers; earliest Danian (middle): Cheirolepidiaceae, shrubs and other low–diversity flora; and Danian (right): Podocarps, Cheirolepidiaceae, palms.

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