Laguna del Hunco: quarry LH6: Ypresian, Argentina
collected by P. Wilf, N.R. Cuneo, K.R. Johnson, P. Puerta, M. A. Gandolfo 1999, 2002, 2004
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Equisetopsida
- Araucariaceae
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Araucariaceae informal TY012 fertile axis
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1 specimen | |||||||||
(pollen cone) | ||||||||||
Araucaria pichileufensis leaf
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3 specimens | |||||||||
Berry | ||||||||||
Araucaria informal TY0013 seed/fruit
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5 specimens | |||||||||
(seed and cone scale) | ||||||||||
"Zamia" tertiaria leaf
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47 specimens | |||||||||
Engelhardt | ||||||||||
= Agathis zamunerae
Wilf et al. 2014
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Wilf et al. 2014 | |||||||||
Araucaria informal TY014 seed/fruit
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1 specimen | |||||||||
"wide" cone scale | ||||||||||
= Agathis zamunerae
Wilf et al. 2014
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Wilf et al. 2014 | |||||||||
unclassified
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Liliopsida informal Monocotyledonae TY098 seed/fruit
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1 specimen | |||||||||
Unknown dicot sp. Arecaceae sp. | ||||||||||
Liliopsida informal Monocotyledonae TY130 leaf
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4 specimens | |||||||||
Pteridopsida
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Filicopsida informal TY002 leaf
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1 specimen | |||||||||
synonym of Pteridopsida | ||||||||||
Polypodiopsida
- Dicksoniaceae
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Filicopsida informal TY154 leaf
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1 specimen | |||||||||
= Dicksonia patagonica
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Carvalho et al. 2013 | |||||||||
Berry | ||||||||||
Polypodiopsida
- Osmundaceae
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Filicopsida informal TY001 leaf
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1 specimen | |||||||||
= Todea amissa
Carvalho et al. 2013
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Carvalho et al. 2013 | |||||||||
unclassified
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Ginkgo patagonica leaf
Berry 1935
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19 specimens | |||||||||
Berry 1935 | ||||||||||
= Ginkgoites patagonicus
Villar de Seoane et al. 2015
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Villar de Seoane et al. 2015 | |||||||||
Angiospermae
- Malvales
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Malvales informal cf. Sterculiaceae TY023 leaf
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19 specimens | |||||||||
Angiospermae
- Brassicales
- Akaniaceae
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Akania patagonica leaf
Gandolfo et al. 1988
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2 specimens | |||||||||
Gandolfo, Dibbern and Romero | ||||||||||
Angiospermae
- Malpighiales
- Euphorbiaceae
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Macaranga kirkjohnsonii
Wilf et al. 2023
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Wilf et al. 2023 | 1 specimen | ||||||||
MPEF‐Pb 7998 | ||||||||||
Angiospermae
- Oxalidales
- Cunoniaceae
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Magnoliopsida informal TY145 seed/fruit
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1 specimen | |||||||||
= Ceratopetalum edgardoromeroi
Gandolfo and Hermsen 2017
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Gandolfo and Hermsen 2017 | |||||||||
Angiospermae
- Fagales
- Fagaceae
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Magnoliopsida informal "Tetracera" patagonica leaf
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11 specimens | |||||||||
Berry | ||||||||||
= Castaneophyllum patagonicum
Wilf et al. 2019
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Wilf et al. 2019 | |||||||||
Angiospermae
- Fagales
- Casuarinaceae
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Gymnostoma informal TY051 seed/fruit
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8 specimens | |||||||||
= Gymnostoma spp. seed/fruit
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Zamaloa et al. 2006 | |||||||||
Gymnostoma informal TY052 leaf
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14 specimens | |||||||||
= Gymnostoma sp. leaf
Johnson 1980
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Zamaloa et al. 2006 | |||||||||
Angiospermae
- Fagales
- Juglandaceae
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Magnoliopsida informal TY088 fertile axis
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3 specimens | |||||||||
= Alatonucula ignis
Hermsen and Gandolfo 2016
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Hermsen and Gandolfo 2016 | |||||||||
Magnoliopsida informal TY099 seed/fruit
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1 specimen | |||||||||
= Alatonucula ignis
Hermsen and Gandolfo 2016
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Hermsen and Gandolfo 2016 | |||||||||
fertile | ||||||||||
Angiospermae
- Myrtales
- Myrtaceae
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Myrtaceae informal "Myrcia" deltoidea leaf
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9 specimens | |||||||||
Engelhardt | ||||||||||
Myrtaceae informal TY157 leaf
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1 specimen | |||||||||
"Myrcia" chubutensis leaf
|
185 specimens | |||||||||
Berry | ||||||||||
= Eucalyptus frenguelliana leaf
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Hermsen et al. 2012 | |||||||||
Gandolfo and Zamaloa | ||||||||||
Myrtaceae informal TY086 fertile axis
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4 specimens | |||||||||
= Eucalyptus caldericola fertile axis
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Hermsen et al. 2012 | |||||||||
Hermsen, Gandolfo & Zamaloa | ||||||||||
Angiospermae
- Laurales
- Lauraceae
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Lauraceae informal TY084 leaf
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6 specimens | |||||||||
Coniferales
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? Coniferales informal TY097 seed/fruit
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1 specimen | |||||||||
Coniferales
- Cupressaceae
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"Libocedrus" prechilensis leaf
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3 specimens | |||||||||
Berry | ||||||||||
= Papuacedrus prechilensis leaf
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Wilf et al. 2009 | |||||||||
(Berry) Wilf et al. | ||||||||||
Coniferales
- Podocarpaceae
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Podocarpaceae informal TY007 leaf
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3 specimens | |||||||||
(planated foliage) | ||||||||||
= Acmopyle engelhardti
Florin 1940
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Wilf 2012 | |||||||||
Podocarpus andiniformis leaf
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12 specimens | |||||||||
Berry | ||||||||||
Podocarpaceae informal TY121 leaf
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4 specimens | |||||||||
small planated leaves | ||||||||||
= Dacrycarpus puertae
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Wilf 2012 | |||||||||
Podocarpaceae informal TY008 leaf
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13 specimens | |||||||||
= Retrophyllum spiralifolium
Wilf et al. 2017
|
Wilf et al. 2017 | |||||||||
Podocarpaceae informal TY176 leaf
|
1 specimen | |||||||||
= Retrophyllum spiralifolium
Wilf et al. 2017
|
Wilf et al. 2017 | |||||||||
Magnoliopsida
|
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Magnoliopsida informal "Schmidelia" proedulis leaf
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44 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal "Celtis" ameghenoi leaf
|
21 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal "Rhamnidium" leaf
|
4 specimens | |||||||||
Magnoliopsida informal TY030 leaf
|
6 specimens | |||||||||
Magnoliopsida informal cf. "Banara" prehernandiensis leaf
|
6 specimens | |||||||||
as figured in Berry 1925 | ||||||||||
Magnoliopsida informal TY039 leaf
|
1 specimen | |||||||||
Magnoliopsida informal cf. Macaranga or Mallotus leaf
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1 specimen | |||||||||
Magnoliopsida informal TY053 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY054 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY055 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY056 leaf
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8 specimens | |||||||||
Magnoliopsida informal "Myrica" mira leaf
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103 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal TY067 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY069 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY079 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY085 fertile axis
|
1 specimen | |||||||||
Magnoliopsida informal TY093 seed/fruit
|
9 specimens | |||||||||
Magnoliopsida informal cf. Cunoniaceae TY094 seed/fruit
|
3 specimens | |||||||||
“4-winged helicopter” | ||||||||||
Magnoliopsida informal TY100 seed/fruit
|
2 specimens | |||||||||
Magnoliopsida informal "Cupania" grosseserrata leaf
|
19 specimens | |||||||||
(Engelhardt) Berry | ||||||||||
Magnoliopsida informal TY109 leaf
|
2 specimens | |||||||||
Magnoliopsida informal TY112 leaf
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7 specimens | |||||||||
Magnoliopsida informal TY113 leaf
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4 specimens | |||||||||
Magnoliopsida informal "Cupania" latifolioides leaf
|
15 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal "Cassia" argentinensis leaf
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5 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal cf. Allophylus eduliformis seed/fruit
|
1 specimen | |||||||||
(Berry) Berry | ||||||||||
Magnoliopsida informal TY122 leaf
|
13 specimens | |||||||||
Magnoliopsida informal TY124 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY134 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY140 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY141 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY142 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY144 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY146 seed/fruit
|
1 specimen | |||||||||
Magnoliopsida informal TY147 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY148 leaf
|
2 specimens | |||||||||
Magnoliopsida informal TY150 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY151 leaf
|
2 specimens | |||||||||
Magnoliopsida informal TY152 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY153 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY191 leaf
|
1 specimen | |||||||||
Magnoliopsida informal TY200 leaf
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1 specimen | |||||||||
see common names |
Geography
Country: | Argentina | State/province: | Chubut |
Coordinates: | 42.5° South, 70.0° West (view map) | ||
Paleocoordinates: | 45.0° South, 60.0° West | ||
Basis of coordinate: | stated in text | ||
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
Key time interval: | Ypresian | ||
Age range of interval: | 56.00000 - 47.80000 m.y. ago | ||
Age estimate: | 52.22 ± 0.22 Ma (Ar/Ar) |
Stratigraphy
Formation: | Huitrera | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: See P. Wilf et al. 2003, Science suppl., for detailed lithostratigraphy, paleomagnetic stratigraphy, and first Ar-Ar ages. See P. Wilf et al. 2012 (American Journal of Botany) for the revised Ar-Ar age given above. |
Lithology and environment
Primary lithology: | fine,tuffaceous,gray lithified silty,sandy "siliciclastic" | ||
Includes fossils? | Y | ||
Lithology description: See Wilf et al. 2003, Science suppl., for complete lithologic summary. | |||
Environment: | crater lake | Tectonic setting: | volcanic basin |
Geology comments: Large caldera-lake, embedded in the Eocene middle Chubut River volcanic pyroclastic complex. See E. Aragon and M.M. Mazzon, Rev. Asoc. Geol. Argent. 52(3):243-256 (1997). |
Taphonomy
Modes of preservation: | adpression,original silica,original carbon,replaced with silica |
Size of fossils: | macrofossils,mesofossils,microfossils |
Spatial orientation: | random |
Preservation of anatomical detail: | very poor |
Abundance in sediment: | abundant |
Size sorting: | medium |
Fragmentation: | frequent |
Bioerosion: | none |
Feeding/predation traces: | punctures,external foliage feeding,arthropod mining,arthropod galling,arthropod boring,piercing/sucking,oviposition |
Temporal resolution: | time-averaged |
Spatial resolution: | allochthonous |
Collection methods and comments
Collection excludes: | all microfossils,some macrofossils | ||
Collection methods: | bulk,selective quarrying,mechanical,field collection | ||
Reason for describing collection: | paleoecologic analysis | ||
Museum repositories: | MEF | ||
Collectors: | P. Wilf, N.R. Cuneo, K.R. Johnson, P. Puerta, M. A. Gandolfo | Collection dates: | 1999, 2002, 2004 |
Metadata
Also known as: | LH6 | ||
Database number: | 133047 | ||
Authorizer: | P. Wilf, E. Vlachos | Enterer: | M. Donovan, E. Stiles, F. Aspromonte |
Modifier: | E. Stiles | Research group: | paleobotany |
Created: | 2012-09-01 01:48:34 | Last modified: | 2018-11-02 09:17:03 |
Access level: | the public | Released: | 2012-09-01 01:48:34 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
42725. | P. Wilf, K. R. Johnson, N. R. Cúneo, M. E. Smith, B. S. Singer and M. A. Gandolfo. 2005. Eocene Plant Diversity at Laguna del Hunco and Río Pichileufú, Patagonia, Argentina. The American Naturalist 165(6):634-650 [P. Wilf/M. Donovan] |
Secondary references:
55786 | M. R. Carvalho, P. Wilf, E. J. Hermsen, M. A. Gandolfo, N. R. Cúneo and K. R. Johnson. 2013. First record of Todea (Osmundaceae) in South America, from the early Eocene paleorainforests of Laguna del Hunco (Patagonia, Argentina). American Journal of Botany 100:1831-1848 [C. Jaramillo/C. Jaramillo] | |
66203 | M. A. Gandolfo and E. Hermsen. 2017. Ceratopetalum (Cunoniaceae) fruits of Australasian affinity from the early Eocene Laguna del Hunco flora, Patagonia, Argentina. Annals of Botany 119:507-516 [P. Wilf/E. Stiles] | |
43002 | E. J. Hermsen, M. A. Gandolfo, and M. C. Zamaloa. 2012. The fossil record of Eucalyptus in Patagonia. American Journal of Botany 99:1356-1374 [P. Wilf/M. Donovan] | |
66449 | E. J. Hermsen and M. A. Gandolfo. 2016. Fruits of Juglandaceae from the Eocene of South America. Systematic Botany 41(2):316-328 [P. Wilf/E. Stiles] | |
66453 | L. Villar de Seoane, N. R. Cuneo, I. E. Escapa, P. Wilf, and M. A. Gandolfo. 2015. Ginkgoites patagonicus (Berry) comb. nov. from the Eocene of Patagonia, last ginkgoalean record in South America. International Journal of Plant Sciences 176(4):346-363 [P. Wilf/E. Stiles/E. Stiles] | |
43004 | P. Wilf. 2012. Rainforest conifers of Eocene Patagonia: attached cones and foliage of the extant southeast-Asian and Australasian genus Dacrycarpus (Podocarpaceae). American Journal of Botany 99:562-584 [P. Wilf/M. Donovan] | |
66216 | P. Wilf, M. P. Donovan, N. R. Cuneo and M. A. Gandolfo. 2017. The fossil flip-leaves (Retrophyllum, Podocarpaceae) of southern South America. American Journal of Botany 104(9):1-26 [P. Wilf/E. Stiles] | |
55856 | P. Wilf, I. H. Escapa, N. R. Cúneo, R. M. Kooyman, K. R. Johnson and A. Iglesias. 2014. First South American Agathis (Araucariaceae), Eocene of Patagonia. American Journal of Botany 101(1):156-179 [C. Jaramillo/C. Jaramillo] | |
87948 | P. Wilf, A. Iglesias, and M. A. Gandolfo. 2023. The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga‐Mallotus clade. American Journal of Botany 110(5):1-20 [E. Vlachos/F. Aspromonte] | |
43000 | P. Wilf, S. A. Little, A. Iglesias, M. C. Zamaloa, M. A. Gandolfo, N. R. Cúneo, and K. R. Johnson. 2009. Papuacedrus (Cupressaceae) in Eocene Patagonia, a new fossil link to Australasian rainforests. American Journal of Botany 96:2031-2047 [P. Wilf/M. Donovan] | |
69525 | P. Wilf, K. C. Nixon, M. A. Gandolfo and N. R. Cúneo. 2019. Eocene Fagaceae from Patagonia and Gondwanan legacy in Asian rainforests. Science 364(6444):eaaw5139 [P. Wilf/E. Stiles] | |
43003 | M. C. Zamaloa, M. A. Gandolfo, C. C. González, E. J. Romero, N. R. Cúneo and P. Wilf. 2006. Casuarinaceae from the Eocene of Patagonia, Argentina. International Journal of Plant Sciences 167:1279-1289 [P. Wilf/M. Donovan] |