Licking Run, Midland (Jurassic of the United States)

Where: Fauquier County, Virginia (38.6° N, 77.7° W: paleocoordinates 18.8° N, 23.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Midland Formation (Meriden Group), Hettangian (201.3 - 199.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, gray, argillaceous, carbonaceous limestone and carbonaceous limestone

• "dark, carbonaceous shaly limestoneā€¦a dark, very fissile shale very similar to that of the Cotlett's Branch exposure, but much less indurated and more driable. Intermingled fragments of a coarsely laminated semicrystalline limestone also contained imprints."

Size class: macrofossils

Preservation: mold/impression

Collected by F. Baer, W. Martin, D. Dunkle in 1946, 1949; reposited in the USNM

Collection methods: surface (float), surface (in situ), mechanical,

• Airbrasive technique was used.

Primary reference: F. Baer and W. Martin. 1949. Some new finds of fossil ganoids in the Virginia Triassic. Science 110(2869):684-686 [M. Uhen/M. Uhen/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 107637: authorized by Mark Uhen, entered by Mark Uhen on 12.04.2011, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Coelacanthimorpha
 Coelacanthiformes - Dipluridae
Diplurus longicaudatus2 Newberry 1878 coelacanth
Osteichthyes
 Chondrostei - Dictyopygidae
"Catopteridae indet." = Dictyopygidae
"Catopteridae indet." = Dictyopygidae ray-finned fish
 Ptycholepiformes - Ptycholepididae
"Ptycholepis marshi" = Ptycholepis marshii1
"Ptycholepis marshi" = Ptycholepis marshii1 Newberry 1878 ray-finned fish
 Palaeonisciformes - Redfieldiidae
Redfieldius sp. Hay 1899
Actinopteri
 Semionotiformes - Semionotidae
Semionotus sp.2 Agassiz 1832