Rock Head North, MNA 555-3 (Jurassic to of the United States)

Also known as Foxtrot Mesa, Ward Terrace, Silty Facies, MCZ 18/78/A

Where: Coconino County, Arizona (35.7° N, 111.0° W: paleocoordinates 19.3° N, 49.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Silty Facies Member (Kayenta Formation), Sinemurian to Sinemurian (199.3 - 182.7 Ma)

• middle third of Silty Facies, same level as type localities of Scutellosaurus lawleri and Rhamphinion jenkinsi

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; hematitic, pebbly, green, red, white, silty, carbonaceous sandstone

• "...meter-thick cross-bedded sandstone. The bed is a light greenish-white color, mottled with patches and bands of a dark red hematitic stain. The sandstone is composed of heterogenous, poorly sorted, angular sand grains in a matrix of silt and clay, with a calcium carbonate cement. A few reddish-brown clayballs and pebbles were found in the matrix around the specimen."

Size class: macrofossils

Collected by W, Amaral, F. A. Jenkins, T. Rowe, C. Schaff, K. Smith, H.-D. Sues in 1977-1978

Collection methods: quarrying, mechanical,

Primary reference: T. Rowe. 1989. A new species of the theropod dinosaur Syntarsus from the Early Jurassic Kayenta Formation of Arizona. Journal of Vertebrate Paleontology 9(2):125-136 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35248: authorized by Matthew Carrano, entered by Matthew Carrano on 20.11.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Saurischia -
"Syntarsus kayentakatae n. sp." = Coelophysis kayentakatae
"Syntarsus kayentakatae n. sp." = Coelophysis kayentakatae Rowe 1989 coelophysoid
MNI; MNA V2623