5Mook CC. Skull characters of recent crocodilia with notes on the affinities of the recent genera [ J ] . Bulletin of the American Museum of Natural History, 1921, 44 ( 13 ) : 123-268.
6Thorbjarnarson J, Messel H, King FW, et al. Crocodiles : an action plan for their conservation [ M ] . Gland : IUCN, 1992.
7Gad SD. Indian Gharial ( Gavialis gangeticus ) on the verge of extinction [ J ] . Curr Sci, 2008, 94 : 1549.
8Santiapillai C, de Silva M. Status, distribution and conservation of crocodiles in Sri- Lanka [ J ] . Biol Conserv, 2001, 97 : 305-318.
9de Klemm C, Navid D. Crocodilians and the law [ M ] //Hall PM. Crocodiles : their ecology, management, and conservation. Gland : IUCN Publication, 1989 : 80-100.
10Wilson MR, DiZionno JA, Polanskey D, et al. Validation of mitochon- drial DNA sequencing for forensic casework analysis [ J ] . Int J Leg Med, 1995, 108 : 68-74.