Zamaca (Miocene of Peru)

Where: Ica, Peru (14.6° S, 75.6° W: paleocoordinates 15.5° S, 71.5° W)

• coordinate stated in text

When: Chilcatay Formation, Burdigalian (20.4 - 16.0 Ma)

• Acosta Hospitaleche et al 2005 identify this locality as early Middle Miocene. Varas-Malca et al 2011 state it is late Oligocene to early middle Miocene.

•The age of the Ct1c facies association is constricted between 19.25 ± 0.08 Ma and 19.00 ± 0.28 Ma (early Burdigalian) on the basis of two volcanic ash layer samples dated by 40Ar/39Ar [89].

• formation-level stratigraphic resolution

Environment/lithology: coastal; lithology not reported

Size class: macrofossils

Primary reference: C. Acosta Hospitaleche and M. Stucchi. 2005. Nuevos restos terciarios de Spheniscidae (Aves, sphenisciformes) procedentes de la Costa del Peru. Revista española de paleontología 20(1):1-5 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 100330: authorized by Mark Uhen, entered by Mark Uhen on 08.12.2010, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Myliobatiformes -
 Myliobatiformes - Dasyatidae
Dasyatidae indet.4 Jordan 1888 whiptail stingray
 Odontaspidida - Jaekelotodontidae
Anotodus agassizii4 Le Hon 1871 elasmobranch
 Squatiniformes - Squatinidae
Squatina sp.4 Dumeril 1806 angel shark
 Rhinopristiformes - Pristidae
cf. Anoxypristis sp.4 White and Moy-Thomas 1941 sawfish
 Carcharhiniformes - Carcharhinidae
Negaprion brevirostris4 Poey 1868 lemon shark
Physogaleus contortus4 Gibbes 1847 requiem shark
Carcharhinus brachyurus4 Gunther 1870 requiem shark
Carcharhinus dicelmai n. sp.2 Collareta et al. 2022 requiem shark
MUSM 4697
Carcharhinus cf. leucas4 Valenciennes 1839 requiem shark
 Carcharhiniformes - Hemigaleidae
Hemipristis serra4 Agassiz 1835 ground shark
 Carcharhiniformes - Sphyrnidae
Sphyrna zygaena4 Linnaeus 1758 hammerhead shark
 Carcharhiniformes - Galeocerdidae
Galeocerdo aduncus4 Agassiz 1835 tiger shark
 Lamniformes - Carchariidae
Carcharias sp.4 Rafinesque 1810 sand shark
 Lamniformes - Lamnidae
Isurus oxyrinchus4, "Cosmopolitodus hastalis" = Carcharodon hastalis4, "Carcharocles chubutensis" = Carcharodon subauriculatus4, Cosmopolitodus plicatilis4
Isurus oxyrinchus4 Rafinesque 1810 mackerel shark
"Cosmopolitodus hastalis" = Carcharodon hastalis4 Agassiz 1838 white shark
"Carcharocles chubutensis" = Carcharodon subauriculatus4 Agassiz 1839 white shark
Cosmopolitodus plicatilis4 Agassiz 1843 mackerel shark
 Lamniformes - Alopiidae
Alopias superciliosus4 Lowe 1840 thresher shark
Alopias cf. vulpinus4 Bonnaterre 1788 thresher shark
 Lamniformes - Megachasmidae
Megachasma cf. applegatei4 Shimada et al. 2014 mackerel shark
 Lamniformes - Otodontidae
Parotodus benedeni4 Le Hon 1871 mackerel shark
Megalolamna paradoxodon4 Shimada et al. 2017 mackerel shark
Mammalia
 Cetacea - Eurhinodelphinidae
Eurhinodelphinidae indet.3 Abel 1901 toothed whale
MUSM 632
 Cetacea -
Platanidelphidi indet.1 Bianucci et al. 2020 toothed whale
 Cetacea - Squalodelphinidae
Notocetus vanbenedeni1 Moreno 1892 toothed whale
 Cetacea -
Ensidelphis riveroi n. gen. n. sp.1
Ensidelphis riveroi n. gen. n. sp.1 Bianucci et al. 2020 toothed whale
 Carnivora -
Pinnipedia indet.6 Illiger 1811 pinniped
Reptilia
 Crocodylia - Gavialidae
Sacacosuchus sp.5 Salas-Gismondi et al. 2022 crocodilian
MUSM 164
Aves
 Sphenisciformes -
Palaeospheniscus sp. Moreno and Mercerat 1891 penguin