Mariposas Fmn, submember d4b-alpha, Nogueras area, Aragon, Spain (Devonian of Spain)

Where: Aragon, Spain (41.1° N, 1.1° W: paleocoordinates 50.7° S, 38.6° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: d4b Member (Mariposas Formation), Early/Lower Emsian (409.1 - 402.5 Ma)

• submember d4b-alpha. Lower Emsian.

• member-level stratigraphic resolution

Environment/lithology: marine; black, gray limestone and black shale

• Inferred deeper water than d4a, but shallow enough for "Receptaculites" and trilobites with unreduced eyes.
• "an alternation, 31m thick of grey to black limestones with increasingly black dacryoconarid shales that grades into Hercynic facies"

Primary reference: P. Carls. 1988. The Devonian of Celtiberia (Spain) and Devonian paleogeography of SW Europe. In N. J. McMillan, A. F. Embry, D. J. Glass (eds.), Devonian of the World, Volume I 421-466 [M. Foote/M. Foote/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 40407: authorized by Michael Foote, entered by Michael Foote on 23.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
Scutellum sp. Pusch 1833 trilobite
 Phacopida - Phacopidae
Phacops sp. Emmrich 1839 trilobite
 Proetida - Aulacopleuridae
Otarion sp. Zenker 1833 trilobite
 Proetida - Proetidae
Proetidae indet. Salter 1864 trilobite
 Lichida - Odontopleuridae
Leonaspis sp. Richter and Richter 1917 trilobite
Chlorophyceae
  - Receptaculitidae
"Receptaculites" sp. Defrance 1827