PBDB Collection

Palacio de los Loros 2 (Paleocene of Argentina)

Also known as PL2

Where: Chubut, Argentina (45.9° S, 69.2° W: paleocoordinates 48.4° S, 58.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Salamanca Formation, Danian (66.0 - 61.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lithified, fine-grained, gray, muddy, sandy siliciclastic sediments

• The uppermost Salamanca Formation contains mudstones and poorly sorted, fine grey sandstones on top of an erosive base, with infilled concave lenses and large lateral accretion sets. These rocks represent a meandering fluvial environment of low energy, with high sinuosity channels.

Size classes: macrofossils, mesofossils, microfossils

Preservation: adpression

Reposited in the MEF

Collection methods: bulk, quarrying, mechanical,

Primary reference: A. Iglesias, P. Wilf, K. R. Johnson, A. B. Zamuner, N. R. Cúneo and S. D. Matheos. 2007. A Paleocene lowland macroflora from Patagonia reveals signifcantly greater richness than North American analogs. Geology 35(10):947-950 [P. Wilf/M. Donovan/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 133753: authorized by Peter Wilf, entered by Mike Donovan on 27.09.2012, edited by Elena Stiles and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	? Cochlospermaceae "SA 019" ? Cochlospermaceae "SA 019"
Polypodiopsida
Salviniales - Polypodiidae	Azolla keuja² Azolla keuja² Hermsen et al. 2019
Angiospermae
Laurales - Lauraceae	Laurophyllum chubutensis, Laurophyllum piatnitzkyi Laurophyllum chubutensis Berry 1937 laurel Laurophyllum piatnitzkyi Berry 1937 laurel
Ranunculales - Menispermaceae	Stephania psittaca⁴ Stephania psittaca⁴ Jud et al. 2018
Violales - Flacourtiaceae	Banaraphyllum ovatum Banaraphyllum ovatum Berry 1937
-	"Dicotyledonae "SA 002"" = Dicotyledoneae, "Dicotyledonae "SA 005"" = Dicotyledoneae, "Dicotyledonae "SA 016"" = Dicotyledoneae, "Dicotyledonae "SA 020"" = Dicotyledoneae, "Dicotyledonae "SA 035"" = Dicotyledoneae, "Dicotyledonae "SA 040"" = Dicotyledoneae, "Dicotyledonae "SA 041"" = Dicotyledoneae, "Dicotyledonae "SA 044"" = Dicotyledoneae, "Dicotyledonae "SA 047"" = Dicotyledoneae, "Dicotyledonae "SA 050"" = Dicotyledoneae, "Dicotyledonae "SA 054"" = Dicotyledoneae, "Dicotyledonae "SA 055"" = Dicotyledoneae, "Dicotyledonae "SA 056"" = Dicotyledoneae, "Dicotyledonae "SA 057"" = Dicotyledoneae, "Dicotyledonae "SA 059"" = Dicotyledoneae "Dicotyledonae "SA 002"" = Dicotyledoneae "Dicotyledonae "SA 005"" = Dicotyledoneae "Dicotyledonae "SA 016"" = Dicotyledoneae "Dicotyledonae "SA 020"" = Dicotyledoneae "Dicotyledonae "SA 035"" = Dicotyledoneae "Dicotyledonae "SA 040"" = Dicotyledoneae "Dicotyledonae "SA 041"" = Dicotyledoneae "Dicotyledonae "SA 044"" = Dicotyledoneae "Dicotyledonae "SA 047"" = Dicotyledoneae "Dicotyledonae "SA 050"" = Dicotyledoneae "Dicotyledonae "SA 054"" = Dicotyledoneae "Dicotyledonae "SA 055"" = Dicotyledoneae "Dicotyledonae "SA 056"" = Dicotyledoneae "Dicotyledonae "SA 057"" = Dicotyledoneae "Dicotyledonae "SA 059"" = Dicotyledoneae
Brassicales - Akaniaceae	Akania sp. Akania sp. Hook
Sapindales - Sapindaceae	Sapindaceae "SA 043" Sapindaceae "SA 043" de Jussieu 1789 soapberry
Malvales - Malvaceae	Malvaceae "SA 058", "Sterculia" acuminataloba Malvaceae "SA 058" de Jussieu 1789 mallow "Sterculia" acuminataloba Berry 1937 tropical chestnut
Rosales - Urticaceae	Urticaceae "SA 051" Urticaceae "SA 051" de Jussieu 1789 nettle
Rosales - Rosaceae	Rosaceae "SA 008" Rosaceae "SA 008" Jussieu 1789 rose
Oxalidales - Cunoniaceae	Lacinipetalum spectabilum³ Lacinipetalum spectabilum³ Jud et al. 2017
Fagales - Fagaceae	Fagophyllum duseni Fagophyllum duseni Berry 1937
Fagales - Nothofagaceae	Dryophyllum australis Dryophyllum australis Berry 1937
Fagales - Myricaceae	"Myrica" premira "Myrica" premira Berry 1937 bayberry
Vitales - Vitaceae	Cissites patagonicum Cissites patagonicum
Insecta
Hymenoptera - Braconidae	Agathis immortalis n. sp.¹ Agathis immortalis n. sp.¹ Escapa et al. 2018 wasp MPEF-Pb-5867 (Museo Paleontológico Egidio Feruglio, Paleobotanical Collection. Fig. 8E). A number of additional specimens including ovuliferous com- plexes, isolated seeds, pollen cones, leaves and branches are referred to Agathis immortalis. Vegetative remains: MPEF-Pb 5866, 5875, 5954, 5959–5963, 5968–5970, 5972, 5973, 5975, 5976, 5978–5992, 5994, 5997–6013, 6016–6031, 6033–6046, 6048, 6050–6071, 6073– 6092, 6094–6113, 6115–6120, 6137, 6141, 6151, 6152, 6160–6162. Ovuliferous complexes: MPEF-Pb 5851–5858, 5861, 5862, 5864, 5865, 5867–5874, 5877, 5878, 5942, 5944, 5945, 5948, 5950–5953, 5955, 5957, 5965, 5971, 5974, 6093, 6114. Seeds: MPEF-Pb 5859, 5860, 5863, 5876, 5941, 5946–5947, 5949, 5956. Pollen cones: MPEF-Pb 5982, 6049, 6121, 6122, 6124, 6125, 6131, 6132, 6134, 6135, 6139, 6140, 6142–6150, 6153–6158.

¹Escapa et al. 2018; ²Hermsen et al. 2019; ³Jud et al. 2017; ⁴Jud et al. 2018