A.  Seilacher, ?Constructional morphology of bivalves: evolutionary pathways in primary versus secondary soft-bottom dwellers?, Palaeontology, vol. 27, pp. 207-237, 1984.

A.  Seilacher, ?Constructional morphology of bivalves: evolutionary pathways in primary versus secondary soft-bottom dwellers?, Palaeontology, vol. 27, pp. 207-237, 1984.