southeast of Playa Yumaque: Priabonian, Peru
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Odontopterygiformes
- Pelagornithidae
|
||||||||||
|
Pelagornithidae indet.
Fürbringer 1888
|
DeVries et al. 2017 | |||||||||
|
Reptilia
|
||||||||||
|
Inkayacu paracasensis n. gen., n. sp.
Clarke et al. 2010
|
||||||||||
|
Actinopteri
- Clupeiformes
- Clupeoidei
|
||||||||||
|
Sardinops sp.
Hubbs 1929
|
||||||||||
|
unclassified
|
||||||||||
|
Engraulis sp.
Cuvier 1817
|
||||||||||
|
Chondrichthyes
- Selachii
|
||||||||||
|
Selachii indet.
|
||||||||||
| "shark teeth" | ||||||||||
|
Bivalvia
|
||||||||||
|
Bivalvia indet.
Linnaeus 1758
|
||||||||||
| "infaunal marine bivalves" | ||||||||||
|
Bivalvia
- Pholadida
- Raetomyidae
|
||||||||||
|
Amotapus arbolensis
(Woods 1922)
|
DeVries et al. 2017 | |||||||||
|
Bivalvia
- Cardiida
- Veneridae
|
||||||||||
|
"Dosinia" lechuzaensis
Rivera 1957
|
DeVries et al. 2017 | |||||||||
|
Bivalvia
- Carditida
- Carditidae
|
||||||||||
|
Cardita newelli
Rivera 1957
|
DeVries et al. 2017 | |||||||||
|
Bivalvia
- Carditida
- Crassatellidae
|
||||||||||
|
Crassatella pedroi
Devries 2016
|
Devries 2016 | 6 specimens | ||||||||
|
Gastropoda
- Turritellidae
|
||||||||||
|
Turritella woodsi
Lisson 1925
|
DeVries et al. 2017 | |||||||||
|
Turritella cochleiformis
Gabb 1869
|
DeVries et al. 2017 | |||||||||
|
Gastropoda
- Strombidae
|
||||||||||
|
Ectinochilus sp.
Cossmann 1889
|
DeVries et al. 2017 | |||||||||
|
Gastropoda
- Aporrhaidae
|
||||||||||
|
Peruchilus culberti
Olsson 1931
|
||||||||||
|
Gastropoda
- Ficidae
|
||||||||||
|
Ficus chiraensis
Olsson 1931
|
DeVries et al. 2017 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Peru |
| Coordinates: | 13.9° South, 76.3° West (view map) |
| Paleocoordinates: | 13.8° South, 66.2° West (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Priabonian | ||
| Age range of interval: | 37.71 - 33.9 m.y. ago | ||
| Age estimate: | 37.2 to 35.7 Ma (Ar/Ar) |
Stratigraphy
| Formation: | Otuma | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "A late Eocene age for much of the Otuma Formation including [the fossiliferous horizon]... is supported by ash beds in the Río Ica Valley south of the Reserva Paracas, with 40Ar-39Ar dates of 37.2 and 36.5 Ma in the lower part of the sequence and an ash with an 40Ar-39Ar date of 35.7 Ma in the upper part of the sequence"
JA: originally entered as Late Eocene because the older dates might have reached into the Bartonian, but the 2010 IUGS timescale implies they are earliest Priabonian | |||||
Lithology and environment
| Primary lithology: | planar lamination,fine lithified sandstone |
| Lithology description: "sandstone bed... within a ~20- meter section of thick-bedded indurated medium-grained sandstone interbedded with less indurated, finer-grained, thin-bedded and laminated sandstone" [bed presumably is of the latter lithology based on preservation of specimen] | |
| Environment: | coastal indet. |
| Geology comments: possibly shoreface based on description | |
Taphonomy
| Modes of preservation: | body,adpression,soft parts |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
Collection methods and comments
| Collection excludes: | some genera |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: collecting details not given
reposited in the Museo de Historia Natural-UNMSM, Lima | |
| Taxonomic list comments:sharks and bivalves are presumably identifiable | |
Metadata
| Also known as: | Paracas Reserve | ||
| Database number: | 98346 | ||
| Authorizer: | J. Alroy, W. Kiessling, M. Uhen | Enterer: | J. Alroy, M. Krause, M. Uhen |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-10-02 05:38:50 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2010-10-02 05:38:50 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 33980. | J. A. Clarke, D. T. Ksepka, R. Salas-Gismondi, A. J. Altamirano, M. D. Shawkey, L. D’Alba, J. Vinther, T. J. DeVries, and P. Baby. 2010. Fossil evidence for evolution of the shape and color of penguin feathers. Science 330 [J. Alroy/J. Alroy] |
Secondary references:
| 59889 | T. J. Devries. 2016. Fossil Cenozoic crassatelline bivalves from Peru: New species and generic insights. Acta Palaeontologica Polonica 61 [W. Kiessling/M. Krause] | |
| 70795 | T. J. DeVries, M. Urbina, and N. A. Jud. 2017. The Eocene-Oligocene Otuma Depositional Sequence (East Pisco Basin, Peru): Paleogeographic and Paleoceanographic Implications of New Data. Boletín de la Sociedad Geológica del Perú 112:14-38 [M. Uhen/M. Uhen] | |
| 52405 | Q. Li, J. A. Clarke, K.-Q. Gao, C.-F. Zhou, Q. Meng, D. Li, L. D'Alba and M. D. Shawkey. 2014. Melanosome evolution indicates a key physiological shift within feathered dinosaurs. Nature 507:350-353 [M. Carrano/M. Carrano] |