Etmopterus heterodontus Ng & Lin, 2026 MNHN IC-2004-2380 Holotype
sex: female
length: 243 mm TL
date vessel station: 28 July 2002.
location: southern Walters Shoals
latitude: 35°01'1.2''S
longitude: 44°14'45.6''E
depth: 707–953 m
specimens: 1
Etmopterus heterodontus Ng & Lin, 2026 MNHN IC-2003-0561 Paratype
sex: female
length: 379 mm TL
date vessel station: 29.11.1973 00:00:00
location: southwestern Madgascar
latitude: 22°19'58.8''S
longitude: 42°58'58.8''E
depth: 314–656 m
specimens: 1
Etmopterus heterodontus Ng & Lin, 2026 MNHN IC-2024-0702 (ex. MNHN 2003-0558) Paratype
sex: female
length: 226 mm TL
date vessel station: February 1973
location: southwestern Madagascar
latitude: 23°36'S
longitude: 43°31'E
depth: 295–740 m
specimens: 1
Etmopterus heterodontus Ng & Lin, 2026 MNHN IC- 2024-0917 Paratype
sex: male
age: immature
length: 277 mm TL
date vessel station: 27 July 2002
location: southern Walters Shoals
latitude: 35°01'S
longitude: 44°10'E
depth: 314–656 m
specimens: 1
Etmopterus heterodontus Ng & Lin, 2026 MNHN IC-2024-1322 Paratype
sex: female
length: 335 mm TL
date vessel station: 29.11.1973 00:00:00
location: southwestern Madgascar
latitude: 22°19'58.8''S
longitude: 42°58'58.8''E
depth: 314–656 m
specimens: 1