Unusual concentration of Early Albian arthropod-bearing amber in the Basque-Cantabrian Basi (El Soplao, Cantabria, Northern Spain): Palaeoenvironmental and palaeobiological implications

The El Soplao site is a recently-discovered Early Albian locality of the Basque-Cantabrian Basin (northern Spain) that has yielded a number of amber pieces with abundant bioinclusions. The amber-bearing deposit occurs in a non-marine to transitional marine siliciclastic unit (Las Penosas Formation) that is interleaved within a regressive-transgressive, carbonate-dominated Lower Aptian-Upper Albian marine sequence. The Las Penosas Formation...