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 (NALMA), typically set from 60,200,000 to 56,800,000 years BP lasting 3.4 million years .[1]

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 (approximate).
Ti5 Lower boundary source of the base of the Tiffanian (approximate) and upper boundary source of the base of the Clarkforkian (approximate).
Ti4: Lower boundary source of the base of the Tiffanian (approximate) and upper boundary source of the base of the Clarkforkian (approximate).
Ti3: Lower boundary source of the base of the Tiffanian (approximate) and upper boundary source of the base of the Clarkforkian (approximate).
Ti2: Lower boundary source of the base of the Tiffanian (approximate) and upper boundary source of the base of the Clarkforkian (approximate).
Ti1: Upper boundary source of the base of the Clarkforkian (approximate)

Fauna

Notable mammals[2][3][4]

Multituberculata - non-therian mammals

Neoplagiaulax, neoplagiaulacid multituberculate
Ptilodus, squirrel-sized ptilodontid

Metatheria - marsupials

Peradectes, peradectid marsupial

Apatotheria - primitive, arboreal mammals

Labidolemur, aye-aye-like arboreal mammal

Condylarthra - archaic ungulates

Claenodon, large, arctocyonid condylarth
Ectocion, phenacodontid condylarth
Lambertocyon, arctocyonid condylarth
Phenacodus, phenacodontid condylarth
Thryptacodon, raccoon-like arctocyonid condylarth

Dinocerata - large, tusked herbivores

Probathyopsis, early North American uintathere

Eulipotyphla - insectivorous mammals

Adunator, erinaceomorph insectivore
Leptacodon, nyctitheriid insectivore
Litocherus, erinaceomorph insectivore

Primatomorpha - primates and relatives

Carpodaptes, carpolestid plesiadapiform
Carpolestes, carpolestid plesiadapiform
Chiromyoides, small plesiadapid
Ignacius, paramomyid plesiadapiform
Nannodectes, basal plesiadapid
Phenacolemur, paramomyid plesiadapiform
Plesiadapis, plesiadapid plesiadapiform

Proteutheria - basal eutherians

Palaeoryctes, small insectivorous mammal

References

Paleobiology Database, Tiffanian
"The Tiffanian Land-Mammal Age (Middle and Late Paleocene) In The Northern Bighorn Basin, Wyoming". hdl:2027.42/61362. Cite journal requires |journal= (help)
Gunnell, Gregg F. (1994-03-31). "Paleocene mammals and faunal analysis of the Chappo Type Locality (Tiffanian), Green River Basin, Wyoming". Journal of Vertebrate Paleontology. 14 (1): 81–104. doi:10.1080/02724634.1994.10011540. ISSN 0272-4634.
Gazin, Charles Lewis (1956). "Paleocene mammalian faunas of the Bison Basin in south-central Wyoming". Smithsonian Miscellaneous Collections. 131: 1–57.

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[1] Paleobiology Database, Tiffanian

[2] "The Tiffanian Land-Mammal Age (Middle and Late Paleocene) In The Northern Bighorn Basin, Wyoming". hdl:2027.42/61362. Cite journal requires |journal= (help)

[3] Gunnell, Gregg F. (1994-03-31). "Paleocene mammals and faunal analysis of the Chappo Type Locality (Tiffanian), Green River Basin, Wyoming". Journal of Vertebrate Paleontology. 14 (1): 81–104. doi:10.1080/02724634.1994.10011540. ISSN 0272-4634.

[4] Gazin, Charles Lewis (1956). "Paleocene mammalian faunas of the Bison Basin in south-central Wyoming". Smithsonian Miscellaneous Collections. 131: 1–57.