Late Tournaisian (Carboniferous) brachiopods from Mouydir (Central Sahara, Algeria)

Abstract

A small-sized brachiopod fauna, representing an orthid, rhynchonellid and spiriferid community which lived in a low-energy environment, is reported from the lower part of the Argiles de Teguentour and was collected around Oued Tamertasset (or Temertasset) and Oued Habadra in north-western Mouydir (Algerian Sahara). Associated goniatites indicate an early Late Tournaisian age (Pericyclus-Progoniatites assemblage). Thirteen brachiopod species belonging to 12 genera and 5 orders (Productida, Orthida, Rhynchonellida, Athyridida and Spiriferida) are described. Mouydirhynchus is proposed as a new rhynchonellid genus and the species Rhipidomella prolifica, Mouydirhynchus quietus and Eomartiniopsis mouydirensis are new. The other described taxa are the following: Chonetipustula? sp., strophalosioid gen. et sp. indet., Schizophoria sp., trigonirhynchiid gen. indet. sp. A, trigonirhynchiid gen. indet. sp. B, Hemiplethorhynchus? sp., Coveenia? sp., Crurithyris cf. fissa, Punctothyris? sp., and elythid gen. et sp. indet.

Micromorph brachiopods from the late Asbian (Mississippian, Visean) from northwest Ireland (Gleniff, County Sligo)

“…However, for the reasons discussed above, it is better to leave these specimens provisionally in open nomenclature. Moreover, a thorough comparative study of Mississippian ambocoeliides from Western Europe, notably those described by George (1931) and those illustrated but not described by de Koninck (1887; see Mottequin & Legrand-Blain 2010), is urgently needed to assess better the diversity of this family during this interval, and especially the nature of the spines, but is beyond the scope of this paper.…”

Biostratigraphic significance of brachiopods near the Devonian–Carboniferous boundary

“…Only Eomartiniopsis is selected here; it includes shells that are characterized by a rounded outline, a fold and sulcus weakly rounded to moderately developed, and are devoid of ribs or have only a few ones on the flanks. It is doubtfully reported in the upper to uppermost Famennian of Poland by Halamski & Baliński (2009), but is known from the base of the Kinderhookian to the Osagean in North America (Carter, 1988, 1991), in the Tournaisian succession of North Africa (Brice, Legrand-Blain & Nicollin, 2005; Mottequin & Legrand-Blain, 2010), Russia (e.g. Fotieva, 1985) and Australia (Roberts, 1971).…”

Kellwasser horizons, sea-level changes and brachiopod–coral crises during the late Frasnian in the Namur–Dinant Basin (southern Belgium): a synopsis

“…R. tumidus) and pugnacid representatives, are generally the most common elements of Palaeozoic dysaerobic communitites (e.g. Bowen et al 1974;Racki 1989;Alexander 1994;Mottequin & Legrand-Blain 2010).…”