Field photographs of platform-top facies and macrofauna in the upper part of the Seguilí Formation (SF-3), in the Barranco de Alcaida section (Carrascal de Parcent; see Fig. 2 for location and stratigraphical details): a: cluster of Chondrodonta shown in vertical section, preserved in inclined upright life position in bioclastic packstone matrix; b: close-up of vertical Chondrodonta, showing diagnostic under-folded chondrophore (arrowed); c: vertical section through attached left valve (lv), plus sliver of right valve (rv), including diagnostic posterior myophore (arrowed), of Pseudotoucasia santanderensis (Douvillé, 1889), preserved in life position in nodular marly bioclastic packstone in lower part of a cyclic bed; d: detail from section across commissure of another specimen of P. santanderensis, showing posterior myophore in rv; e: vertical section through wackestone to sparse packstone top of a cyclic bed, with burrows secondarily filled with marl from base of overlying bed; f: overturned articulated specimen of Polyconites verneuili (Coquand, 1865), with posterior myophore of right valve indicated by arrow, in bioclastic packstone matrix; g: small, overturned cluster of Eoradiolites sp., in bioclastic packstone matrix.