Filon Douze Tafilalt bed OJ-I (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: deep subtidal shelf; lithified, black, silty, carbonaceous floatstone

• The bed is characterized by the occurrence of scour and fill structures c. 0.15 m thick with a diameter of <0.5 m. These structures contain a floatstone with masses of poorly orientated orthocones.

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 91483: authorized by Björn Kröger, entered by Björn Kröger on 29.09.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Cyrtodontida - Antipleuridae
Panenka sp. Barrande 1881 clam
Cephalopoda
 Orthocerida - Sichuanoceratidae
Sichuanoceras zizense Kröger 2008
 Orthocerida - Arionoceratidae
Adiagoceras taouzense Kröger 2008
 Orthocerida - Orthoceratidae
Merocycloceras sp. Ristedt 1968
Kopaninoceras jucundum Barrande 1870
 Orthocerida - Lamellorthoceratidae
Arthrophyllum vermiculare Termier and Termier 1950
 Orthocerida - Geisonoceratidae
Temperoceras ludense Sowerby 1839
 Orthocerida - Sphaerorthoceratidae
 Oncocerida - Jovellaniidae