In Central Sardinia (Italy) crops out a NW-SE oriented almost continuous thin belt formed by a short succession of siliciclastics and carbonates pertaining to the European Germanic Triassic. The Middle Triassic dolomitic outcrops belong to the lower Yellowish Dolostones Mb of the Monte Maiore Fm of the Sardinian Muschelkalk Group: they have been analyzed for sedimentological, paleoenvironmental, paleontological, and biostratigraphical purposes. These deposits are for the most part laminated mudstones affected by fine dolomitization. Algal bindstones, packstones and wackestones are also present, as well as halokinetic folds, dissolution-collapse breccias, and chert nodules-rich horizons: these latter are telltales of a significant primary evaporitic content now entirely dissolved or replaced by quartz. The macro- and microfacies features suggest deposition in an epeiric, restricted shallow low-energy tidal carbonate platform close to the South European paleomargin and subject to a hot-arid climate. The environment was frequently subject to storms (hurricanes?) leaving graded bioclastic beds behind. Some of the dolomitic outcrops revealed some reworked algae assemblages: one of them gave for the first time a well-preserved association represented by Diplopora annulata, Kantia dolomitica, Macroporella beneckei and Teutloporella nodosa. The algae are fragmented and have been transported: they are the product of storm beds deposition in a protected lagoonal environment. The algae specimens are well-preserved only when the carbonate rock has been silicified prior to dolomitization. The algal assemblage gave an Illyrian (Late Anisian) age. This is in good accord with the established age of the ingression of the Muschelkalk sea in Sardinia and in the Germanic Sephardic Domain. Comparisons have been made with the other lower Muschelkalk outcrops of Sardinia.