# Tinguirirican

The Tinguirirican (Spanish: Tinguiririquense) age is a period of geologic time (36.0–29.0 Ma) within the Late Eocene and Early Oligocene epochs of the Paleogene, used more specifically within the SALMA classification in South America. It follows the Divisaderan and precedes the Deseadan age.

## Etymology

The age is named after the Tinguiririca fauna of the Abanico Formation in Chile.

## Formations

| Formation bold is type | Country | Basin |
| Abanico Formation - Tinguiririca fauna | Chile | Abanico Basin |
| Chota Formation | Peru | Bagua Basin |
| Entre-Córregos Formation | Brazil | Aiuruoca Basin |
| Gualanday Group | Colombia | Central Colombian Ranges |
| Laguna Brava Formation | Argentina | Precordillera |
| Loreto Formation | Chile | Magallanes Basin |
| El Milagro Formation | Peru | Bagua Basin |
| Otuma Formation | Peru | Pisco Basin |
| Sarmiento Formation | Argentina | Golfo San Jorge Basin |
| Seca Formation | Ecuador | Progreso Basin |
| Soncco Formation | Peru | Eastern Peruvian Andes |

## Fossils

| Group | Fossils | Formation | Notes |
| Mammals | Andemys frassinettii, A. termasi, Archaeotypotherium pattersoni, A. tinguiriricaense, Barrancatatus tinguiririquensis, Bryanpattersonia sulcidens, Chilestylops davidsoni, Eomorphippus bondi, E. neilopdykei, Eomorphippus cf. pascuali, Eoviscaccia frassinettii, Johnbell hatcheri, Klohnia charrieri, Kramadolops abanicoi, K. mckennai, Periphragnis vicentei, Pseudhyrax eutrachytheroides, P. strangulatus, Pseudoglyptodon chilensis, Santiagorothia chiliensis, Termastherium flacoensis, Trigonolophodon cf. elegans, Rhyphodon sp., Astrapotheria indet., ?Borhyaenidae indet., Indaleciinae indet., Notohippidae indet., Tardigrada indet. | Abanico | [17][18] [19] [20][21] |
| Mammals | Baguatherium jaureguii | El Milagro | |
| Mammals | Colombitherium tolimense | Gualanday | |
| Mammals | Cynthiacetus peruvianus, Basilosauridae indet. | Otuma | |
| Mammals | Anisotemnus distentus, Archaeotypotherium propheticus, Barrancatatus maddeni, B. rigidus, Bryanpattersonia sulcidens, Canchadelphys cristata, Clenia brevis, Eomicrobiotherium matutinum, Eomorphippus obscurus, E. pascuali, Eopachyrucos pliciferus, E. pliciformis, Hondonadia praecipitia, H. pumila, Hondonadia cf. fierroensis, Klohnia major, Kramadolops fissuratus, Leontinia ?gaudryi, Machlydotherium ater, Meteutatus percarinatus, Parutaetus chilensis, Peltephilus undulatus, Periakros ambiguus, Pilchenia antiqua, Praedens aberrans, Proargyrohyrax curanderensis, Pseudhyrax ?eutrachytheroides, Pseudoglyptodon cf. chilensis, Rhynchippus pumilus, Rosendolops ebaios, Sadypus minutus, S. aff. confluens, Santiagorothia chiliensis, Archaeutatus sp., Guilielmoscottia sp., Microbiotherium sp., Pleurostylodon sp., Proargyrohyrax sp., Prozaedyus sp., Puelia sp., Glyptatelinae indet., Hathlyacininae indet., Hegetotheriidae indet., Isotemnidae indet., Notohippidae indet., ?Pichipilidae indet., Proterotheriidae indet., Sternbergiidae indet., Stegotheriini indet. | Sarmiento | [26][27] [28][29] |
| Birds | Icadyptes salasi, Inkayacu paracasensis, Spheniscidae indet. | Otuma | [30][31] [32] |
| Birds | Gruipeda dominguensis (ichnofossil) | Laguna Brava | |
| Reptiles | Pterosphenus sheppardi | Seca | |
| Fishes | Engraulis sp., Sardinops sp. | Otuma | |
| Insects | Aiuruocatermes piovezanae, Cenomycetophila mineira | Entre-Corrégos | |

## Correlations

Tinguirirican correlations in South America :
| Formation | Abanico | Otuma | El Milagro | Seca | Gualanday | Entre-Córregos | Sarmiento | Map |
| Basin | Abanico | Pisco | Bagua | Progreso | Central Ranges | Aiuruoca | Golfo San Jorge | Tinguirirican (South America) |
| Country | Chile | Peru | Peru | Ecuador | Colombia | Brazil | Argentina | Tinguirirican (South America) |
| Archaeotypotherium | | | | | | | | Tinguirirican (South America) |
| Barrancatatus | | | | | | | | Tinguirirican (South America) |
| Bryanpattersonia | | | | | | | | Tinguirirican (South America) |
| Klohnia | | | | | | | | Tinguirirican (South America) |
| Kramadolops | | | | | | | | Tinguirirican (South America) |
| Pseudhyrax | | | | | | | | Tinguirirican (South America) |
| Pseudoglyptodon | | | | | | | | Tinguirirican (South America) |
| Santiagorothia | | | | | | | | Tinguirirican (South America) |
| Pyrotheria | | | | | | | | Tinguirirican (South America) |
| Birds | | | | | | | | Tinguirirican (South America) |
| Reptiles | | | | | | | | Tinguirirican (South America) |
| Fish | | | | | | | | Tinguirirican (South America) |
| Insects | | | | | | | | Tinguirirican (South America) |
| Environments | Alluvial | Shallow marine | Fluvial | Open marine | Alluvial-fluvial | Lacustrine | Fluvio-deltaic | Tinguirirican volcanoclastics Tinguirirican fauna Tinguirirican insects |
| Volcanic | Yes | | | | | | Yes | Tinguirirican volcanoclastics Tinguirirican fauna Tinguirirican insects |