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Lacustrine strata of the Los Rastros Formation (Middle to Upper Triassic) at …


Biology Articles » Paleobiology » Micropaleobiology » Miospores and chlorococcalean algae from the Los Rastros Formation, Middle to Upper Triassic of central-western Argentina » Figures

Figures
- Miospores and chlorococcalean algae from the Los Rastros Formation, Middle to Upper Triassic of central-western Argentina

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Figure 1. Location map of the Río Gualo section, Ischigualasto-Villa Unión Basin, La Rioja province, Argentina / mapa de ubicación de la sección de Río Gualo, Cuenca de Ischigualasto- Villa Unión, provincia de La Rioja, Argentina. Modified from Caselli (1998)/ modificado de Caselli (1998).

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Figure 2. Schematic section of the Los Rastros Formation in Río Gualo indicating palyniferous and other fossiliferous horizons / sección litológica de la Formación Los Rastros en Río Gualo incluyendo horizontes con palinomorfos y otros fósiles. Modified from Mancuso (2003) / modificado de Mancuso (2003).

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Figure 3. Stratigraphic distribution of palynomorphs in samples studied / distribución estratigráfica de los palinomorfos en los niveles estudiados.

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Figure 4. A-D, Variapollenites trisulcus Ottone; A, BAFC-Pl 1431(14) W42/2; B, BAFC-Pl 1431(10) R37/3; C, BAFC-Pl 1431(12) Z39/1; D, BAFC-Pl 1431(11) Y42/0. E-F, H, Variapollenites curviplicatus Ottone; E, BAFC-Pl 1431(11) C22/2, proximal view/ vista proximal ; F, BAFC-Pl 1431(13) T26/1; H, BAFC-Pl 1431(11) C22/2, distal view/ vista distal . G, I, Variapollenites rhombicus Ottone; G, BAFC-Pl 1431(8) Q30/4; I, BAFC-Pl 1431(3) Q36/4. J, L, Brachysaccus sp. A; J, BAFC-Pl 1431(11) T30/2; L, BAFC-Pl 1431(11) G41/4. K, Equisetosporites cacheutensis Jain BAFC-Pl 1431(11) Z26/2. Scale bar/ escala gráfica = 30 µm.

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Figure 5. A, D, Cycadopites sp. A; A, BAFC-Pl 1432(2) Q50/0; D, BAFC-Pl 1433(1) J39/3. B-C, Cycadopites sp. cf. C. follicularis Wilson and Webster; B, BAFC-Pl 1432(2) T41/4; C, BAFC-Pl 1432(2) K53/4. E-F, Plaesiodictyon mosellanum ssp. symmetricum Brenner and Foster; E, 1431(11) N35/2; F, 1431(11) Q24/0. G-H, J-K, Botryococcus sp.; G, BAFC-Pl 1437(1) U55/0, botryoidal colony/ colonia botroidal; H, BAFC-Pl 1437(1) Y52/0, compound colony showing branches/ colonia compuesta con ramas ; J, BAFC-Pl 1443(1) L51/3, botryoidal colony/ c olonia botroidal ; K, BAFC-Pl 1444(1) O41/3, structureless mass/ masa amorfa. I, Plaesiodictyon mosellanum ssp. Perforatum Wille 1970 BAFC-Pl 1431(12) S43/0. Scale bar/ escala gráfica = 30 µm.

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Figure 6. A-F, Pollen grains of extant Ginkgo biloba Linnaeus collected in situ from a microsporangiate organ in Buenos Aires. Specimens show variations in the shape of pollen grain and sulcus / granos de polen de Ginkgo biloba actual colectados in situ de un microsporangio en Buenos Aires. Los especímenes muestran variaciones en la forma del grano y del sulco. Scale bar/ escala gráfica = 30 µm.

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