Wonderland Quarry (SDSM V9141) (Jurassic to of the United States)

Also known as Piedmont, SD-4

Where: Meade County, South Dakota (44.2° N, 103.3° W: paleocoordinates 39.3° N, 49.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• 5 m above top of Unkpapa Sandstone

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; gray siltstone and limestone

• poorly drained floodplain
• "light gray siltstone with interbedded limestones"

Size classes: macrofossils, mesofossils

Collected by G. Szigeti in 1980-1991; reposited in the SDSM

Collection methods: quarrying, mechanical,

Primary reference: J. R. Foster. 1996. Sauropod dinosaurs of the Morrison Formation (Upper Jurassic), Black Hills, South Dakota and Wyoming. Contributions to Geology, University of Wyoming 31(1):1-25 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49631: authorized by Matthew Carrano, entered by Matthew Carrano on 21.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda indet. Cuvier 1797 snail
 Testudines - Pleurosternidae
Glyptops sp.2 Marsh 1890 turtle
 Saurischia - Diplodocidae
Barosaurus lentus Marsh 1890 diplodocine
SDSM 25210
 Saurischia - Camarasauridae
Camarasaurus sp.3 Cope 1877 camarasaurid
 Theropoda -
 Avetheropoda - Allosauridae
Allosaurus sp. Marsh 1877 allosaurid
 Avetheropoda -
Tyrannosauroidea indet.1 Walker 1964 coelurosaur
 Loricata -
Crocodylia indet. crocodilian
 Choristodera -
Cteniogenys antiquus3 Gilmore 1928 choristodere