Sud Sacaco, Montemar: Messinian, Peru

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816
Muizon and DeVries 1985
Chondrichthyes - Lamniformes - Lamnidae
Chondrichthyes - Lamniformes - Otodontidae
Muizon and DeVries 1985
Also studied in Pimiento and Balk
Reptilia - Charadriiformes - Scolopacidae
Cheneval 1993
Reptilia - Odontopterygiformes - Pelagornithidae
Pelagornithidae indet. Fürbringer 1888
Chavez et al. 2007 1 specimen
Reptilia - Suliformes - Sulidae
Stucchi 2003 1 specimen
cf. Sula sp. Brisson 1760
Muizon and DeVries 1985
Stucchi 2003 1 specimen
Sula aff. variegata (Tschudi 1843)
Stucchi 2003 7 specimens
Stucchi 2003 1 specimen
Reptilia - Suliformes - Phalacrocoracidae
Muizon and DeVries 1985
Reptilia - Spheniscidae
Spheniscidae indet. Bonaparte 1831
Muizon and DeVries 1985
form 2
Stucchi 2002 1 specimen
Stucchi et al. 2003 5 specimens
Reptilia - Cathartiformes - Cathartidae
Stucchi and Emslie 2005
Reptilia
Eusuchia indet. Huxley 1875
Muizon and DeVries 1985
Reptilia - Gavialidae
Kraus 1998
SMNK 1282 PAL - holotype (skull, mandible and postcranial material); referred material: MUSM 1001 and 1909
Mammalia - Nothrotheriidae
Muizon and McDonald 1995 1 specimen
Muizon & McDonald 1995 stated this taxon was from the SAS horizon, but this was later changed to the MTM horizon in later publications (McDonald & Muizon, 2002)
Mammalia - Megatheriidae
Mammalia - Cetacea - Phocoenidae
Muizon and DeVries 1985
Mammalia - Cetacea - Kogiidae
Benites-Palomino et al. 2020 1 specimen
MUSM 973
Mammalia - Cetacea - Physeteridae
Muizon 1988
form 2
Mammalia - Cetacea
Lambert et al. 2017 1 specimen
(1 measurement)
Mammalia - Cetacea - Balaenopteridae
Muizon and DeVries 1985
form 2
Mammalia - Carnivora
Muizon and DeVries 1985
terrestrial
Mammalia - Carnivora - Procyonidae
Tarquini et al. 2020
MNHN PPI 262
Mammalia - Carnivora - Phocidae
Muizon and DeVries 1985
form 2
Muizon and DeVries 1985
Actinopteri - Clupeiformes - Clupeoidei
Alosinae indet. (Svetovidov 1952)
Muizon and DeVries 1985
see common names

Geography
Country:Peru State/province:Caraveli County:Arequipa
Coordinates: 15.6° South, 74.8° West (view map)
Paleocoordinates:15.2° South, 73.2° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Neogene Epoch: Miocene
Stage: Messinian 10 m.y. bin: Cenozoic 6
Key time interval: Messinian
Age range of interval: 7.246 - 5.333 m.y. ago
Stratigraphy
Formation:Pisco
Local section:Pisco Local bed:MTM
Local order:no particular order
Stratigraphic resolution:group of beds
Stratigraphy comments: 4.5-6 Ma (Stucchi & Urbina, 2004); 7.3 - 7.0 Ma (Ehret et al 2012)
MTM horizon at Montemar, Sacaco Area, Caraveli Province, Arequipa, Peru (Fig. 1A). This horizon ranges from 7.3 to 7.0 Ma (latest Tortonian–earliest Messinian, late Miocene).
Ar dating of tephra layers within the Pisco Fm. with results suggesting P1 age between 9.5 and 8.6 Ma, and that of P2 between 8.4 and 6.7 Ma (Bosio et al. 2019)
Strontium isotope stratigraphy suggests Langhian–Serravallian age (14.8–12.4 Ma) for the P0 sequence of the Pisco Formation (see Fig. 9). Overlying P1 and P2 layers (including SAO horizon) reflects cooling from the late Serravallian–Messinian onwards. (Bosio et al. 2020)
"The Sud-Sacaco West locality is late Messinian in age, with Sr isotopes ranging from 6.15 ± 0.15 to 5.85 ± 0.15 Ma and U–Pb maximum depositional ages of 6.28 ± 0.05 Ma (MG4-25; Figs. 4D) and 6.62 ± 0.10 Ma (MG4-01; Fig. 4D)." (Ochoa et al. 2022)
Lithology and environment
Primary lithology:diatomaceous siltstone
Includes fossils?Y
Environment:paralic indet.
Geology comments: "a littoral paleoenviroment with protected beaches and reefs exposed to marine sediments" (Stucchi and Emslie 2005), high sedimentation rate, shallow-to-deep shelf, upwelling
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Preservation of anatomical detail:excellent
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:MTM
Database number:46084
Authorizer:M. Uhen, P. Mannion, J. Alroy Enterer:M. Uhen, J. Alroy, P. Mannion
Modifier:B. Allen Research group:vertebrate
Created:2005-01-01 15:27:52 Last modified:2025-04-06 05:06:32
Access level:the public Released:2005-01-01 15:27:52
Creative Commons license:CC0
Reference information

Primary reference:
12182. R. Marocco and C. d.e. Muizon. 1988. Los vertebrados del Neogeno de La Costa Sur del Perú: Ambiente sedimentario y condiciones de fosilización. Bulletin de l'Institut Frances d'Etudes Andines 17(2):105-117 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

72147 A. Benites-Palomino, J. Vélez-Juarbe, R. Salas-Gismondi and M. Urbina. 2020. Scaphokogia totajpe, sp. nov., a new bulky-faced pygmy sperm whale (Kogiidae) from the late Miocene of Peru. Journal of Vertebrate Paleontology e1728538 [M. Uhen/M. Uhen]
34370 M. Chavez, M. Stucchi, and M. Urbina. 2007. El registro de Pelagornithidae (Aves: Pelecaniformes) y la avifauna neogena del Pacifico sudeste. Bulletin de l'Institut Francais d'Etudes Andines 36(2):175-197 [M. Uhen/M. Uhen]
40374 J. Cheneval. 1993. L'avifaune Mio-Pliocene de la Formation Pisco (Perou) etude prliminaire. Document Labratorie Geologique Lyon 125:85-95 [M. Uhen/M. Uhen]
28038 R. Kraus. 1998. The cranium of Piscogavialis jugalipeforatus n. nen., n. sp. (Gavialidae, Crocodylia) from the Miocene of Peru. Palaeontologische Zeischrift 72(3/4):389-406 [M. Uhen/M. Uhen]
60319 O. Lambert, G. Bianucci, and C. Muizon. 2017. Macroraptorial sperm whales (Cetacea, Odontoceti, Physeteroidea) from the Miocene of Peru. Zoological Journal of the Linnean Society 179:404-474 [M. Uhen/M. Uhen/M. Uhen]
11895 C. Muizon. 1988. Les vertebres fossiles de la Formation Pisco (Perou). Troisieme partie: Les Odontocetes (Cetacea, Mammalia) du Miocene. Editions Recherche sur les Civilisations (78)1-244 [M. Uhen/N. Pyenson/M. Uhen]
16797 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]
16788 C. Muizon and H. G. McDonald. 1995. An aquatic sloth from the Pliocene of Peru. Nature 375:224-227 [M. Uhen/M. Uhen]
81296 D. Ochoa, T. J. DeVries, K. Quispe, A. Barbosa-Espitia, R. Salas-Gismondi, D. A. Foster, R. Gonzales, S. Revillon, R. Berrospi, L. Pairazamán, J. Cardich, A. Perez, P. Romero, M. Urbina, and M. Carré. 2022. Age and provenance of the Mio-Pleistocene sediments from the Sacaco area, Peruvian continental margin. Journal of South American Earth Sciences 116:103799 [M. Uhen/M. Uhen/M. Uhen]
49081 C. Pimiento and M. Balk. 2015. The extinct giant shark Carcharocles megalodon: A model for understanding deep-time body size trends of marine apex predators. [C. Jaramillo/C. Pimiento/C. Pimiento]
81650 R. Salas-Gismondi, D. Ochoa, S. Jouve, P. E. Romero, J. Cardich, A. Perez, T. DeVries, P. Baby, M. Urbina and M. Carré. 2022. Miocene fossils from the southeastern Pacific shed light on the last radiation of marine crocodylians. Proceedings of the Royal Society B 289:20220380:1-10 [P. Mannion/P. Mannion]
34468 M. Stucchi. 2002. Una nueva especie de Spheniscus (Aves: Spheniscidae) de la Formacion Pisco, Peru. Boletim de la Sociedad Geologica del Peru 94:17-24 [M. Uhen/M. Uhen/M. Uhen]
54566 M. Stucchi. 2003. Los Piqueros (Aves: Sulidae) de la Formacion Pisco, Peru. Boletin de la Sociedad Geologica de Peru 95:75-91 [M. Uhen/M. Uhen]
29278 M. Stucchi and S. D. Emslie. 2005. A new condor (Ciconiiformes, Vulturidae) from the late Miocene/early Pliocene Pisco Formation, Peru. Condor 107(1):107-113 [J. Alroy/J. Alroy]
34433 M. Stucchi, M. Urbina, and A. Giraldo. 2003. Una nueva especie de Spheniscidae del Mioceno Tardio de la Formacion Pisco, Peru. Bulletin de la Institute Frances etudes Andines 32(2):361-375 [M. Uhen/M. Uhen]
18990 M. Stucchi and M. Urbina. 2004. Ramphastosula (aves, Sulidae): a new genus from the early Pliocene of the Pisco Formation, Peru. Journal of Vertebrate Paleontology 24(4):974-978 [M. Uhen/M. Uhen]
74387 J. Tarquini, L. H. Soibelzon, R. Salas-Gismondi and C. Muizon. 2020. Cyonasua (Carnivora, Procyonidae) from late Miocene of Peru shed light on the early dispersal of carnivorans in South America. Journal of Vertebrate Paleontology e1834406:1-9 [P. Mannion/P. Mannion]