Tiffanian


The Tiffanian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology, typically set from 60,200,000 to 56,800,000 years BP lasting.
It is usually considered to overlap the Selandian and Thanetian within the Paleocene.
The Tiffanian is preceded by the Torrejonian and followed by the Clarkforkian NALMA stages.

Substages

The Tiffanian is considered to contain the following substages:
  • Ti6: Lower boundary source of the base of the Tiffanian.
  • Ti5 Lower boundary source of the base of the Tiffanian and upper boundary source of the base of the Clarkforkian.
  • Ti4: Lower boundary source of the base of the Tiffanian and upper boundary source of the base of the Clarkforkian.
  • Ti3: Lower boundary source of the base of the Tiffanian and upper boundary source of the base of the Clarkforkian.
  • Ti2: Lower boundary source of the base of the Tiffanian and upper boundary source of the base of the Clarkforkian.
  • Ti1: Upper boundary source of the base of the Clarkforkian

Fauna

Notable mammals

Sources:
Multituberculata - non-therian mammalsNeoplagiaulax, neoplagiaulacid multituberculatePtilodus, squirrel-sized ptilodontid
Metatheria - marsupialsPeradectes, peradectid marsupial
Apatotheria - primitive, arboreal mammalsLabidolemur, aye-aye-like arboreal mammal
Condylarthra - archaic ungulatesClaenodon, large, arctocyonid condylarthEctocion, phenacodontid condylarthLambertocyon, arctocyonid condylarthPhenacodus, phenacodontid condylarthThryptacodon, raccoon-like arctocyonid condylarth
Dinocerata - large, tusked herbivoresProbathyopsis, early North American uintathere
Eulipotyphla - insectivorous mammalsAdunator, erinaceomorph insectivoreLeptacodon, nyctitheriid insectivoreLitocherus, erinaceomorph insectivore
Primatomorpha - primates and relativesCarpodaptes, carpolestid plesiadapiformCarpolestes, carpolestid plesiadapiformChiromyoides, small plesiadapidIgnacius, paramomyid plesiadapiformNannodectes, basal plesiadapidPhenacolemur, paramomyid plesiadapiformPlesiadapis, plesiadapid plesiadapiform
Proteutheria - basal eutheriansPalaeoryctes, small insectivorous mammal