Tortrix florissantana

Tortrix? florissantana is an extinct species of moth in the family Tortricidae, and possibly in the modern genus Tortrix. The species is known from late Eocene,Priabonian stage, lake deposits near the small community of Florissant in Teller County, Colorado, USA.

Tortrix? florissantana is known only from one fossil, the holotype, number "NHM-I.8429" for part side and "UCM 8579" for the counterpart side. It is a single, mostly complete adult female, preserved as a compression fossil in fine grained shale. The shale specimen is from the fossiliferous outcrops at Station 14, part of the Florissant Formation which outcrops around Florissant. One side of the type specimen is currently preserved in the paleoentomological collections housed in the Natural History Museum located in London, England, while the other side is in the collections of the University of Colorado.T.? florissantana was first studied by Dr Theodore D. A. Cockerell of the University of Colorado, with his 1907 type description being published in the journal Canadian Entomologist. Dr Cockerell did not provide an explanation for the specific epithet florissantana.

At the time of description, the Florissant formation was considered to be Miocene in age. Further refinement of the formation's age using radiometric dating of sanidine crystals has resulted in an age of 34 million years old, which places the formation in the Eocene Priabonian stage.