PBDB Collection

Río Zeballos (Paleocene to of Argentina)

Where: Santa Cruz, Argentina (46.8° S, 71.9° W: paleocoordinates 49.2° S, 62.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Ligorio Márquez Formation, Paleocene to Paleocene (66.0 - 33.9 Ma)

• The local exposure of the Ligorio Márquez Formation lies unconformably above the Cretaceous Rio Tarde Formation and is itself overlain unconformably by marine rocks of the Centinela Formation.

• bed-level stratigraphic resolution

Environment/lithology: mire or swamp; lithified, carbonaceous shale

• Probably a coastal swamp

• The material studied here was derived from a ~0.5 m thick carbonaceous shale bed containing abundant fossil leaves.

Size classes: macrofossils, microfossils

• For macrofloral and cuticle descriptions refer to

•

•R. J. Carpenter, A. Iglesias, and P. Wilf. 2018. Early Cenozoic Vegetation in Patagonia: New Insights from Organically Preserved Plant Fossils (Ligorio Márquez Formation, Argentina) . International Journal of Plant Sciences 179(2)

Preservation: original carbon, original sporopollenin, original cellulose

Collected in 3-4 2011

Collection methods: chemical, mechanical, hydrochloric, hydroflouric,

• Precise locality data are available on request from AI, PW, or Museo Padre Jesus Molina, Rio Gallegos, Santa Cruz, Argentina (MPM), where material is stored.

Primary reference: M. Macphail, R. J. Carpenter, A. Iglesias and P. Wilf. 2013. First Evidence for Wollemi Pine-type Pollen (Dilwynites: Araucariaceae) in South America. PLoS ONE 8(7):1-8 [C. Jaramillo/C. Suarez-Gomez]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 149172: authorized by Carlos Jaramillo, entered by Catalina Suarez-Gomez on 30.07.2013, edited by Elena Stiles

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Dacrydiumidites florinii, Phylocladidites mawsonii Dacrydiumidites florinii Phylocladidites mawsonii

Coniferales - Podocarpaceae	Coronelia molinae, Dacrycarpus chilensis, Dacrycarpites australiensis, Podosporites microsaccatus Coronelia molinae Florin 1940 podocarp Dacrycarpus chilensis podocarp Dacrycarpites australiensis Cookson and Pike 1953 podocarp Podosporites microsaccatus Dettmann 1963 podocarp
Angiospermae
-	"Dicotyledonae "sp. 6"" = Dicotyledoneae, "Dicotyledonae "sp. 7"" = Dicotyledoneae "Dicotyledonae "sp. 6"" = Dicotyledoneae "Dicotyledonae "sp. 7"" = Dicotyledoneae
Oxalidales - Cunoniaceae	Cunoniaceae "sp. 4", Cunoniaceae "sp. 5" Cunoniaceae "sp. 4" Brown 1814 Cunoniaceae "sp. 5" Brown 1814
Malvales - Bombacaceae	Bombacacidites sp. Bombacacidites sp. Couper 1960
Laurales - Lauraceae	Lauraceae "sp. 1", Lauraceae "sp. 2", Lauraceae "sp. 3" Lauraceae "sp. 1" Jussieu 1789 laurel Lauraceae "sp. 2" Jussieu 1789 laurel Lauraceae "sp. 3" Jussieu 1789 laurel
Mesangiosperms - Araceae	Proxapertites sp. Proxapertites sp. Van der Hammen 1956
Ginkgoites
-	Ginkgoites sp. Ginkgoites sp. Seward 1919
Equisetopsida
Pinidae - Pinidae	Dilwynites cf. tuberculatus Dilwynites cf. tuberculatus Harris 1965 slide MPM-PB-14715: Monad, apolar; inaperturate, spheroidal but usually flattened and/or folded; exine thin, less than 1 mm thick, densely ornamented with irregularly-spaced clavae c. 1–2 mm in diameter and height, areas between the sculptural elements apparently psilate; 36–(49)–52 mm in maximum diameter (10 specimens measured).