Itardiornis
Encyclopedia
Itardiornis is an extinct genus of the family Messelornithidae from late Eocene
and early Oligocene
. Only one species is descript, Itardiornis hessae, from Quercy fissure fillings.
Eocene
The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...
and early Oligocene
Oligocene
The Oligocene is a geologic epoch of the Paleogene Period and extends from about 34 million to 23 million years before the present . As with other older geologic periods, the rock beds that define the period are well identified but the exact dates of the start and end of the period are slightly...
. Only one species is descript, Itardiornis hessae, from Quercy fissure fillings.