An annotated checklist of the chondrichthyans of South Africa Author Ebert, David A. Author Wintner, Sabine P. 0000-0001-7350-5999 Author Kyne, Peter M. 0000-0003-4494-2625 debert@mlml.calstate.edu text Zootaxa 2021 2021-03-17 4947 1 1 127 journal article 7365 10.11646/zootaxa.4947.1.1 74dc998a-dc7a-4b02-b43c-a2064c9c6dc2 1175-5326 4614567 7F3B4794-65CF-4691-A330-78A423F2606F Deania calceus ( Lowe, 1839 ) Birdbeak Dogfish Acanthidium calceus Lowe, 1839: 92 . Holotype (unique): Not BMNH 1861.5 .19.33. Type locality: Madeira , North Atlantic. Local synonymy : Deania calcea : Penrith, 1969: 62 ; Bass et al ., 1976: 36 , fig. 28; Compagno, 1984: 65 , fig.; Compagno et al ., 1989: 26 , pl.; Compagno et al ., 1991: 59 ; Ebert et al ., 1992: 604 ; Compagno, 1999: 114 ; Compagno et al ., 2005 : 87 , pl. 5; Ebert, 2013: 75 , fig. 94; Ebert et al ., 2013 a: 108, fig., pl. 7; Ebert & Mostarda, 2013: 28 , fig.; Ebert, 2015: 66 , fig. 72; Ebert & Mostarda, 2015: 22 , fig.; Ebert & van Hees, 2015: 144 ; Compagno, 2016: 1174 ; Weigmann, 2016: 891 . Deania calceus : Bass et al ., 1986: 53 , fig. 5.8. South Africa voucher material : SAIAB 646, SAIAB 647, SAIAB 648, SAIAB 649, SAIAB 13000, SAIAB 25718, SAIAB 26267, SAIAB 26268, SAIAB 26269, SAIAB 26270, SAIAB 27169, SAIAB 54847, SAM 25556. South Africa distribution : The Orange River (NC) to at least Algoa Bay (EC). Remarks : This species is quite common off the west coast between the Orange River to Cape Point, but is likely to be widespread off the South African east coast, including KZN. The species often occurs in considerable numbers, indicating it schools or aggregates ( Compagno et al ., 1991 ). It is also frequently caught in association with large numbers of D. profundorum (D.A. Ebert, pers. obs.). During a series of surveys along the Madagascar Ridge it was also found to be common and frequently encountered in association with D. profundorum (D.A. Ebert, unpubl. data). Conservation status : NT (2020).