Filon Douze Tafilalt bed BS (Devonian of Morocco)

Also known as Jovellania limestone succession. - not to confuse with "Jovellania limestone" of Bultynck and Walliser (2000)

Where: Morocco (30.9° N, 4.1° W: paleocoordinates 64.4° S, 30.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Pedavis pesavis conodont zone, Lochkovian (419.2 - 410.8 Ma)

• Approximately 40 m above Scyphocrinites limestone. The bed represents the pesavis Bioevent.

Environment/lithology: offshore shelf; lithified, black, argillaceous, silty sandstone

• thickness 0.3 m, black bituminous silt-, to sandstone. Toward the top of the bed the arenitic content decreases markedly and the bed appears a a finely laminated, dark brownish, bituminous sandy shale

Size class: macrofossils

Preservation: recrystallized, original aragonite, replaced with calcite

Collected by Kröger in 2007; reposited in the MfN

Collection methods: surface (in situ), mechanical,

Primary reference: B. Kröger. 2008. Nautiloids before and during the ammonoid origin in a Siluro–Devonian section of the Tafilalt (Morocco). Special Papers in Palaeontology 79:1-110 [B. Kröger/B. Kröger]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 91609: authorized by Björn Kröger, entered by Björn Kröger on 06.10.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthocerida - Arionoceratidae
Arionoceras capillosum Barrande 1868
Parakionoceras originale Barrande 1868
 Orthocerida - Orthoceratidae
"Orthocycloceras fluminense" = Orthoceras fluminense
"Orthocycloceras fluminense" = Orthoceras fluminense Meneghini 1857
 Orthocerida - Sphaerorthoceratidae
Parasphaerorthoceras sp. Ristedt 1968
Parasphaerorthoceras sp. B +H
Sphaerorthoceras sp. Ristedt 1968
Sphaerorthoceras sp. A+ B