ISSN:0035-919X    

DOI:10.1080/00359195609519004

出版商:Taylor & Francis Group    

年代:1956

数据来源: Taylor

摘要:

Three orders of mammals have completely subterranean representatives, the rodents, the insectivores, and the marsupials. The latter contains only one subterranean mammal, which is the sole form of this kind from Australia. All of the other continents have subterranean rodents and all but South America have subterranean insectivores. A brief review is given in this paper of the different types of burrowing mammals, of the their characteristics and their distribution. The Bathyergidae and Chrysochloridae of Africa are dealt with in rather more detail than groups found in other parts of the world.

ISSN:0035-919X    

DOI:10.1080/00359195609519005

出版商:Taylor & Francis Group    

年代:1956

数据来源: Taylor

摘要:

The Hopefield site lies 300 ft. above sea-level, on the margin of the ‘Sandveld Plateau’ and ten miles inland from Saldanha Bay. It marks the inner margin of limestone ridges (Dorcasia Formation), product of a littoral dune invasion lasting from the Kamasian into the Gamblian, where these give place to the silvery-grey quartz sands of the Sandveld. The characteristic fossil horizon is a nodular calcrete which apparently represents the drying pan floors in which the fossils accumulated. It is traversed by sinuous ferricrete ridges that are interpreted as ferruginized dune cores marking a preceding moister period; similar ferricretes are of regional extent and postdate the Minor Emergence at the coast. The fossil layer is capped by surface limestones and ferruginized sands, the latter representing a second moister period.

ISSN:0035-919X    

DOI:10.1080/00359195609519006

出版商:Taylor & Francis Group    

年代:1956

数据来源: Taylor

ISSN:0035-919X    

DOI:10.1080/00359195609519003

出版商:Taylor & Francis Group    

年代:1956

数据来源: Taylor