1. Environment of the early Paleozoic vertebrates;Boucot;Palaeogeog. Palaeoclim. Palaeoecol.,1983
2. General ecology of primitive fishes;Bertmar,1985
3. Levels of phosphoprotein in the eggs and ovaries of some fish species;Craik;Comp. Biochem. Physiol.,1982
4. Levels of calcium and iron in the ovaries and eggs of cod Gadus morhua L and plaice Pleuronecte platessa L;Craik;Comp. Biochem. Physiol.,1986
5. The early vertebrate Astraspis, habitat based upon lithographic association;Darby;J. Paleont.,1982