Jimbo Quarry (2B) (PROXY) (Jurassic to of the United States)

Also known as Douglas Quarry

Where: Converse County, Wyoming (42.6° N, 105.4° W: paleocoordinates 38.0° N, 51.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• located in local "Zone 2", in middle of formation, at bottom of "Unit B" in this zone

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; gray, green, sandy mudstone

• alkaline lacustrine setting
• "Unit A rapidly transitions from a sandy-mudstone to a 1.5 m thick wetland/lacustrine mudstone capped by a blocky gray calcareous mudstone horizon; that is predominantly a dense micritic limestone...The sandy-mudstone is dominated by illite and abundant silica." Layer is greenish gray (5GY 6/1).

Size classes: macrofossils, microfossils

Collected by W. Wahl in 1995-2002

Collection methods: mechanical,

Primary reference: D. Lovelace. 2004. Taphonomy and paleoenvironment of a Late Jurassic dinosaur locality in the Morrison Formation of east-central Wyoming. Journal of Vertebrate Paleontology 24(3, suppl.):85A [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 74665: authorized by Matthew Carrano, entered by Matthew Carrano on 23.08.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Charophyta indet.2 Migula 1890
Reptilia
 Theropoda - Troodontidae
Hesperornithoides miessleri n. gen. n. sp.1 Hartman et al. 2019 maniraptoran
WDC-DML-001