Also known as St. Johns I

Where: Apache County, Arizona (34.5° N, 109.3° W: paleocoordinates 10.1° N, 48.0° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Blue Mesa Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• Two closely adjacent localities. All Blue Hills localities are in the uppermost Mesa Redondo (= Bluewater Creek) or lowermost Blue Mesa members, principally the latter. Assigned to the Adamanian LVF

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected in 1921, 1923, 1924, 1926, 1981, 1983; reposited in the UCMP

Primary reference: C. L. Camp. 1930. A study of the phytosaurs with description of new material from western North America. University of California Memoirs 10:1-174 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52499: authorized by Matthew Carrano, entered by Matthew Carrano on 09.08.2005, edited by Richard Butler

Creative Commons license: CC BY (attribution)