TY - CHAP
T1 - Ordovician trilobites from the Tafilalt Lagerstätte
T2 - new data and reappraisal of the Bou Nemrou assemblage
AU - Gutiérrez-Marco, Juan Carlos
AU - Pereira, Sofia
AU - García-Bellido, Diego C.
AU - Rábano, Isabel
N1 - Funding Information:
Funding This work was supported by project CGL2017-87631-P of the Spanish Ministry of Science, Innovation and Universities and is also a contribution to the IGCP 591 project (IUGS-UNESCO). Funding ID: ID0EN3AG976. Participation in this Special Publication was supported by FEDER funds through the Competitiveness Factors Operational Programme, COMPETE, and Portuguese funds through Fundação para a Ciência e a Tecnologia under the UID/Multi00073/ 2019 Project framework, Portugal.
Publisher Copyright:
© 2019 The Author(s).
PY - 2022
Y1 - 2022
N2 - The early Late Ordovician (Sandbian 1) representatives of the Tafilalt Biota in the locality of Bou Nemrou (Jbel Tjarfaïouine) provide examples of fossil preservation in medium-grained sandstones with abundant microbially induced sedimentary structures. The recorded trilobite assemblage comprises 11 species of ten genera, among which one is new (Placoparia africana Pereira & Gutiérrez-Marco, sp. nov.) and four others previously regarded as endemic to the locality are considered to be synonymys of species already described from Bohemia. The oldest representative of the illaenid genus Cekovia is recorded, revised diagnosis proposed for the genus Mytocephala Struve and for Uralichas tardus Vela & Corbacho. Parvilichas Corbacho & Vela is considered to be a junior synonym of Uralichas Delgado. From a palaeobiogeographical point of view, the Bou Nemrou locality shows strong relationships with trilobite assemblages from the Dobrotivian and with the lower Berounian sandstone facies of Bohemia, reinforcing the correlation of both regions. Some soft-bodied structures are recognized here, including the digestive tracts of Uralichas and the traces of paired, metameric axial bands in the anterior thoracic segments of the trilobite Selenopeltis preserved in apatite and interpreted as intersegmental musculature.
AB - The early Late Ordovician (Sandbian 1) representatives of the Tafilalt Biota in the locality of Bou Nemrou (Jbel Tjarfaïouine) provide examples of fossil preservation in medium-grained sandstones with abundant microbially induced sedimentary structures. The recorded trilobite assemblage comprises 11 species of ten genera, among which one is new (Placoparia africana Pereira & Gutiérrez-Marco, sp. nov.) and four others previously regarded as endemic to the locality are considered to be synonymys of species already described from Bohemia. The oldest representative of the illaenid genus Cekovia is recorded, revised diagnosis proposed for the genus Mytocephala Struve and for Uralichas tardus Vela & Corbacho. Parvilichas Corbacho & Vela is considered to be a junior synonym of Uralichas Delgado. From a palaeobiogeographical point of view, the Bou Nemrou locality shows strong relationships with trilobite assemblages from the Dobrotivian and with the lower Berounian sandstone facies of Bohemia, reinforcing the correlation of both regions. Some soft-bodied structures are recognized here, including the digestive tracts of Uralichas and the traces of paired, metameric axial bands in the anterior thoracic segments of the trilobite Selenopeltis preserved in apatite and interpreted as intersegmental musculature.
UR - http://www.scopus.com/inward/record.url?scp=85131099754&partnerID=8YFLogxK
U2 - 10.1144/SP485-2018-126
DO - 10.1144/SP485-2018-126
M3 - Chapter
AN - SCOPUS:85131099754
T3 - Geological Society Special Publication
SP - 97
EP - 137
BT - Geological Society Special Publication
PB - Geological Society of London
ER -