Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 1, pages 1-30

Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 1, pages 31-46

Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 1, pages 47-80

Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 2, pages 81-98

Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 2, pages 99-119

Published in Bulletin of the British Museum (Natural History). Geology., in 1993, in volume 49, issue 2, pages 121-155