Laguna del Hunco: quarry LH4: 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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"Zamia" tertiaria leaf
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3 specimens | |||||||||
Engelhardt | ||||||||||
= Agathis zamunerae
Wilf et al. 2014
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Wilf et al. 2014 | |||||||||
unclassified
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Liliopsida informal cf. Arecaceae TY165 seed/fruit
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1 specimen | |||||||||
Pteridopsida
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Filicopsida informal TY162 leaf
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2 specimens | |||||||||
synonym of Pteridopsida | ||||||||||
Filicopsida informal TY168 leaf
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2 specimens | |||||||||
synonym of Pteridopsida | ||||||||||
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 | |||||||||
Cycadopsida
- Cycadales
- Zamiaceae
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Cycad (aff. Dioon) informal TY016 leaf
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1 specimen | |||||||||
= Austrozamia stockeyi
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Wilf et al. 2016 | |||||||||
Angiospermae
- Malvales
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Malvales informal cf. Sterculiaceae TY023 leaf
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50 specimens | |||||||||
Angiospermae
- Brassicales
- Akaniaceae
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Akania patagonica leaf
Gandolfo et al. 1988
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3 specimens | |||||||||
Gandolfo, Dibbern and Romero | ||||||||||
Angiospermae
- Malpighiales
- Euphorbiaceae
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Macaranga kirkjohnsonii n. sp.
Wilf et al. 2023
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Wilf et al. 2023 | 7 specimens | ||||||||
MPEF‐Pb 7993a,b (Holotype), MPEF‐Pb 195, 7992, and 7994–7997 | ||||||||||
Angiospermae
- Oxalidales
- Cunoniaceae
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cf. Cunoniaceae informal TY129 seed/fruit
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1 specimen | |||||||||
“five-winged helicopter” | ||||||||||
= 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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312 specimens | |||||||||
Berry | ||||||||||
= Castaneophyllum patagonicum
Wilf et al. 2019
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Wilf et al. 2019 | |||||||||
Angiospermae
- Myrtales
- Myrtaceae
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Myrtaceae informal "Myrcia" deltoidea leaf
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1 specimen | |||||||||
Engelhardt | ||||||||||
Myrtaceae informal TY157 leaf
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2 specimens | |||||||||
"Myrcia" chubutensis leaf
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15 specimens | |||||||||
Berry | ||||||||||
= Eucalyptus frenguelliana leaf
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Hermsen et al. 2012 | |||||||||
Gandolfo and Zamaloa | ||||||||||
Angiospermae
- Solanales
- Solanaceae
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Physalis infinemundi
Wilf et al. 2017
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Wilf et al. 2017 | |||||||||
Angiospermae
- Ranunculales
- Menispermaceae
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Menispermaceae informal TY118 leaf
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5 specimens | |||||||||
Angiospermae
- Proteales
- Proteaceae
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Lomatia occidentalis leaf
Frenguelli 1943
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28 specimens | |||||||||
(Berry) Frenguelli | ||||||||||
Angiospermae
- Laurales
- Lauraceae
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Lauraceae informal TY084 leaf
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34 specimens | |||||||||
Coniferales
- Podocarpaceae
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Podocarpaceae informal TY008 leaf
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3 specimens | |||||||||
= Retrophyllum spiralifolium
Wilf et al. 2017
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Wilf et al. 2017 | |||||||||
Magnoliopsida
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Magnoliopsida informal "Schmidelia" proedulis leaf
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108 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal "Celtis" ameghenoi Berry leaf
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351 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal TY022 leaf
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3 specimens | |||||||||
Magnoliopsida informal "Rhamnidium" leaf
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99 specimens | |||||||||
Magnoliopsida informal TY030 leaf
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3 specimens | |||||||||
Magnoliopsida informal TY032 leaf
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2 specimens | |||||||||
Magnoliopsida informal cf. Calophyllum TY034 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY038 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY039 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY045 leaf
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3 specimens | |||||||||
Magnoliopsida informal cf. Macaranga or Mallotus leaf
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4 specimens | |||||||||
Magnoliopsida informal TY050 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY054 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY056 leaf
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23 specimens | |||||||||
Magnoliopsida informal TY059 leaf
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3 specimens | |||||||||
Magnoliopsida informal "Myrica" mira leaf
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2 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal TY078 leaf
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6 specimens | |||||||||
Magnoliopsida informal TY100 seed/fruit
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4 specimens | |||||||||
Magnoliopsida informal TY106 leaf
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5 specimens | |||||||||
Magnoliopsida informal "Coprosma" incerta leaf
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97 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal TY111 leaf
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1 specimen | |||||||||
Magnoliopsida informal "Cupania" latifolioides leaf
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3 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal "Cassia" argentinensis leaf
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29 specimens | |||||||||
Berry | ||||||||||
Magnoliopsida informal TY122 leaf
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6 specimens | |||||||||
Magnoliopsida informal TY123 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY125 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY126 leaf
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7 specimens | |||||||||
Magnoliopsida informal TY132 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY133 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY134 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY136 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY155 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY158 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY159 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY160 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY161 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY163 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY164 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY166 leaf
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2 specimens | |||||||||
Magnoliopsida informal TY167 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY169 fertile axis
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1 specimen | |||||||||
Magnoliopsida informal TY170 leaf
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1 specimen | |||||||||
Magnoliopsida informal TY199 leaf
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1 specimen | |||||||||
Magnoliopsida informal cf. Banara prehernandiensis leaf
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13 specimens | |||||||||
as figured in Berry 1925 | ||||||||||
Magnoliopsida informal cf. Cochlospermum previtifolium leaf
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1 specimen | |||||||||
Berry | ||||||||||
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: | LH4 | ||
Database number: | 133045 | ||
Authorizer: | P. Wilf, E. Vlachos | Enterer: | M. Donovan, E. Stiles, F. Aspromonte |
Modifier: | E. Stiles | Research group: | paleobotany |
Created: | 2012-09-01 01:47:47 | Last modified: | 2018-11-02 09:16:38 |
Access level: | the public | Released: | 2012-09-01 01:47:47 |
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] | |
66159 | fossil record | N. A. Jud, A. Iglesias, P. Wilf and M. A. Gandolfo. 2018. Fossil moonseeds from the Paleogene of West Gondwana (Patagonia, Argentina). American Journal of Botany 105(5):927-942 [P. Wilf/E. Stiles/M. Uhen] |
66217 | P. Wilf, M. R. Carvahlo, M. A. Gandolfo and N. R. Cuneo. 2017. Eocene lantern fruits from Gondwanan Patagonia and the early origins of Solanaceae. Science 377(71) [P. Wilf/E. Stiles/E. Stiles] | |
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] | |
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] | |
66451 | P. Wilf, D. W. Stevenson, and N. R. Cuneo. 2016. The last Patagonian cycad, Austrozamia stockeyi gen. et sp. nov., early Eocene of Laguna del Hunco, Chubut, Argentina. Botany 94(999):817-829 [P. Wilf/E. Stiles/E. Stiles] |