Calamagras weigeli was widespread temporally and geographically, previously being reported from the Chadronian NALMA (Late Eocene) of Canada, Arikareean NALMA (Early Miocene) of Wyoming, Hemingfordian NALMA (Early Miocene) of South Dakota, and Barstovian NALMA (Middle Miocene) of Texas (3).
Geringophis depressus was known previously from the Early Arikareean NALMA (Late Oligocene) of Nebraska and Wyoming, and the Late Arikareean to Late Barstovian NALMA (Early to Middle Miocene, respectively) of Nebraska (Holman, 3).
Lower vertebrates from an Arikareean
(earliest Miocene) fauna near the Toledo Bend Dam, Newton County, Texas.
Mammalian biochronology of the Arikareean
through Hemphillian interval (Late Oligocene through Early Pliocene Epochs).
Hemphillian (Late Miocene) snakes from Nebraska, with comments on Arikareean
through Blancan snakes of Midcontinental North America.
On the basis of biostratlgraphic analyses completed by Skinner et al.( 13, Bailey (3), and Schumaker (2), the Turtle Butte Assemblage was determined to be late early Arikareean
Albright (10) tentatively assigned a poorly preserved salamander vertebra from the early Miocene (Arikareean
NALMA) of Texas to an amphiumid-like salamander.
Stratigraphy and paleomagnetism of the upper middle Eocene to lower Miocene (Uintan to Arikareean
) Sespe Formation, Ventura County, California.
Bailey (2), interpreted the fossils from the Turtle Butte Formation as late early Arikareean
, although this age interpretation is based only on 17 specimens.
A fossil new world quail (Aves: Galliformes, Odontiphorinidae) is described from the late Oligocene (early Arikareean
, NALMA, 28.5-23.8 Ma) Eastlake Local Fauna of the Otay Formation, San Diego County, California.