ammonites
River Ak-Su (Jurassic to of Uzbekistan)

Also known as PGAP 620

Where: Uzbekistan (40.2° N, 69.3° E: paleocoordinates 40.4° N, 74.5° E)

• coordinate estimated from map

When: Middle Gurud Suite Formation, Aalenian to Aalenian (175.6 - 167.7 Ma)

Environment/lithology:

Size class: macrofossils

Primary reference: N.P. Gomolitskii. 1968. On stratigraphy of Jurassic continental deposits of the Yakkabag Mountain (Middle Asia). Izvestiya Akademii Nauk SSSR. Seria geologicheskaya (2)110-115 [A. Rees/A. Rees] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 30977: authorized by Allister Rees, entered by Allister Rees on 02.04.2003