Arnao Platform, Cape La Vela (Devonian of Spain)

Where: Spain (43.6° N, 6.0° W: paleocoordinates 40.8° S, 31.2° E)

• coordinate estimated from map

When: Aguión Formation (Rañeces Group), Late/Upper Emsian (402.5 - 391.9 Ma)

• Aguión Fm. hosts one of the seven reefal episodes described in the Devonian of the Cantabrian zone

• formation-level stratigraphic resolution

Environment/lithology: perireef or subreef; green marl and red marl

• shallow marine platform within a general regressive context; paleogeographical latitude favored the occurrence of reefal buildups
• Aguión Formation was divided in its lowest 60 basal metres by Álvarez-Nava

•and Arbizu (1986) into three informal lithostratigraphic units with different lithological and

•faunal characteristics: a lower calcareous unit, a middle marly-shaly unit and an upper unit of green and red marls. It is the last unit where these bryozoan-coral associations have been seen. The unit is 24 m thick and contains not only numerous bryozoans and corals, but also abundant crinoids and brachiopods

Size class: macrofossils

• upper Emsian crops out showing a rich benthic fauna including mainly bryozoans, crinoids, corals and brachiopods

Preservation: recrystallized, replaced with dolomite

Collected by JLSA in 2017

• 12 samples, three of them belong to the collections of the Museum of Geology, University of Oviedo, rest was collected by JLSA in 2017 in the field (housed in the paleontological collections of the Museo de la Mina de Arnao

Primary reference: C. Sendino, J.L. Suárez Andrés, and M.A. Wilson. 2019. A rugose coral - Bryozoan association from the Lower Devonian of NW Spain. Palaeogeography, Palaeoclimatology, Palaeoecology 530:271-280 [B. Seuss/B. Seuss]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 223347: authorized by Barbara Seuss, entered by Barbara Seuss on 09.11.2021, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Stenolaemata
 Cryptostomata - Fenestellidae
Ernstipora sp. Suárez-Andrés and Wyse Jackson 2014
Bigeyina sp. Suarez-Andres and Mckinney 2011
 Esthonioporata - Revalotrypidae
"Fistuliporidra sp." = Favicella
"Fistuliporidra sp." = Favicella Hall and Simpson 1887
6 specimens
 Cystoporata -
Cystoporata indet. Astrova 1964
 Cystoporata - Anolotichiidae
Altshedata sp.
6 specimens
Crinoidea
 Diplobathrida - Dimerocrinitidae
 Diplobathrida - Orthocrinidae
Orthocrinus sp. Jaekel 1895 Sea lily
 Monobathrida - Periechocrinidae
 Monobathrida - Polypeltidae
Blastoidea
 Troosticrinida - Troosticrinidae
 Fissiculata - Phaenoschismatidae
Pentremitidea lusitanica Etheridge and Carpenter 1882 blastoid
"Pentremitidea pailletti" = Pentremitidea paillettei De Verneuil 1844 blastoid
Pentremitidea archiaci Etheridge and Carpenter 1882 blastoid
Pleuroschisma verneuili Etheridge and Carpenter 1882 blastoid
Anthozoa
 Rugosa -
Rugosa indet. horn coral