sex: female
length: 620 mm TL
date vessel station: by C.H. Gilbert
location: Mexico, Mazatlan
latitude: 23°11'23.7"N
longitude: 106°26'09.2"W
FAO-area: 77
specimens: 1
remarks: Ref.: HOWE, J.C. & SPRINGER, V.G. (1993) Catalog of type specimens of recent fishes in the National Museum of Natural History, Smithsonian Institution, 5: Sharks (Chondrichthyes: Selachii). Smithsonian Contributions to Zoology, (540): i-iii, 1-19: Jordan and Gilbert based the description of M. lunulatus on two specimens (syntypes), both of which they indicated were cataloged as USNM 29211. The catalog ledger indicates that USNM 29211 contained two specimens but, written in red ink in an old script by the catalog number, is the word "type." The second syntype has been missing for many years. (geographical coordinates by J. Pollerspöck)