Aguada de Lomas (Miocene of Peru)

Where: Arequipa, Peru (15.5° S, 74.8° W: paleocoordinates 15.9° S, 72.7° W)

• coordinate stated in text

• local area-level geographic resolution

When: Pisco Formation, Tortonian (11.6 - 7.2 Ma)

• 7-8.8 Ma (Stucchi & Urbina, 2004), Huayquerian, ca. 8 Ma (Muizon & DeVries, 1985), between 7.3 and 7.46 (Ehret et al 2012).

•The Pisco Formation at Agua de Lomas has been dated to 8.0–7.0 Ma based on K-Ar dating [74, 75]. (Marx & Fordyce, 2015).

• bed-level stratigraphic resolution

Environment/lithology: foreshore; diatomaceous siltstone

• AGL horizon, shore environment containing protected beaches and reefs. The protected beaches and reefs are exposed to marine currents. There is a high sedimentation rate, with a shallow-to-deep shelf and upwelling.

Size class: macrofossils

Preservation: original phosphate

Primary reference: C. Muizon and T. J. DeVries. 1985. Geology and paleontology of late Cenozoic marine deposits in the Sacaco area (Peru). Geologische Rundschau 74(3):547-563 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45485: authorized by Mark Uhen, entered by Nick Pyenson on 25.10.2004, edited by Mark Uhen and Carlos Peredo

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Odontaspidida - Carcharodontidae
"Isurus hastalis" = Cosmopolitodus hastalis7
"Isurus hastalis" = Cosmopolitodus hastalis7 Agassiz 1843 elasmobranch
 Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816 eagle ray
 Lamniformes - Otodontidae
"Procarcharodon megalodon" = Otodus megalodon
"Procarcharodon megalodon" = Otodus megalodon Agassiz 1843 megalodon
 Lamniformes - Lamnidae
"Isurus cf. oxyrhynchus" = Isurus oxyrinchus
"Isurus cf. oxyrhynchus" = Isurus oxyrinchus Rafinesque 1810 mako shark
Actinopteri
 Acanthomorphata - Sphyraenidae
 Clupeiformes - Clupeoidei
 Siluriformes - Ariidae
Ariidae indet. Berg 1958 Ariid catfish
Aves
 Ornithurae - Pelagornithidae
Pelagornis sp.3 Lartet 1857 bird
 Sphenisciformes - Spheniscidae
Spheniscidae indet. Bonaparte 1831 penguin
form 2
Spheniscus urbinai15 Stucchi 2002 penguin
 Suliformes - Phalacrocoracidae
cf. Phalacrocorax sp. Brisson 1760 cormorant
 Suliformes - Sulidae
cf. Sula sp. Brisson 1760 booby
Sula aff. variegata16 Tschudi 1843 Peruvian booby
Reptilia
 Loricata -
Eusuchia indet. Huxley 1875 crocodilian
Mammalia
 Sirenia - Dugongidae
? Nanosiren sp.5 Domning and Aguilera 2008 dugong
 Ferae -
Carnivora indet. Bowditch 1821 carnivoran
terrestrial
 Carnivora - Phocidae
Monachinae indet. Trouessart 1897 seal
form 2 & form 4
Acrophoca sp. Muizon 1981 seal
n. sp.
Australophoca changorum n. gen. n. sp.17 Valenzuela-Toro et al. 2016 seal
 Xenarthra - Megatheriidae
Megatheriidae indet.7 Gray 1821 edentate
Thalassocnus antiquus n. sp.11 Muizon et al. 2003 edentate
 Cetacea - Balaenopteridae
Balaenopteridae indet.7 Gray 1864 rorqual
sp. 2
Balaenoptera siberi n. sp.12 Pilleri 1989 rorqual
Incakujira anillodefuego n. gen. n. sp.8 Marx and Kohno 2016 rorqual
 Cetacea - Cetotheriidae
Cetotheriidae indet.7 Brandt 1872 whale
Miocaperea pulchra n. gen. n. sp.1 Bisconti 2012 pygmy right whale
Piscobalaena nana2 Pilleri and Siber 1989 whale
 Cetacea - Kogiidae
Koristocetus pescei n. gen. n. sp.4, Scaphokogia cochlearis n. gen. n. sp.10
Koristocetus pescei n. gen. n. sp.4 Collareta et al. 2017 pygmy sperm whale
Scaphokogia cochlearis n. gen. n. sp.10 Muizon 1988 pygmy sperm whale
 Cetacea - Phocoenidae
Phocoenidae indet.7, Lomacetus ginsburgi n. gen. n. sp.9, cf. Piscolithax sp., "Piscorhynchus aenigmaticus n. gen. n. sp." = Piscolithax aenigmaticus14
Phocoenidae indet.7 Gray 1825 porpoise
Lomacetus ginsburgi n. gen. n. sp.9 Muizon 1986 porpoise
cf. Piscolithax sp. Muizon 1983 porpoise
"Piscorhynchus aenigmaticus n. gen. n. sp." = Piscolithax aenigmaticus14 Pilleri and Siber 1989 porpoise
 Cetacea - Pontoporiidae
Brachydelphis jahuayensis6 Lambert and Muizon 2013 toothed whale
 Cetacea - Eurhinodelphinidae
"Eurhinodelphidae indet." = Eurhinodelphinidae13
"Eurhinodelphidae indet." = Eurhinodelphinidae13 Abel 1901 toothed whale