Etmopterus granulosus (GÜNTHER, 1880)

 

Images:  © Nicolas Straube, Munich, Material all caught off south New Zealand

Tooth formula (upper/lower): 14-1-14/25-27

 

Material: Morphological changes of anterior tooth form in growth. Left side of plate: growth series of male teeth, right side: growth series of female teeth; SEM images, labial views. Male specimens: puppy: nr. 65, 26 cm total length; subadult: nr. 27, 49 cm total length; adult: nr. 3, 66 cm total length. Female specimens: puppy: nr. 107, 29 cm total length; subadult: nr. 86, 60 cm total length; adult: nr. 78, 69 cm total length.Etmopterus granulosus

 

Material: Symphyseal tooth of 1st functional row. Female specimen, (nr. 78, 69 cm total length), SEM image, labial view.Etmopterus granulosus

 

Material: Adult male specimen, nr. 9, 57 cm total length, SEM images. Tooth a shows only one cusplet on each side of the central cusp, tooth b and c have two pairs of cusplets. a: lingual view; bf: labial view; a-c: upper teeth; d-f: lower teeth; Positions of teeth: a: 1, b: 2, c: 7, d: 2, e: 7, f: 13-15. Etmopterus granulosus

 

Material: Immature male specimen, nr. 26, 36 cm total length, SEM images. Upper teeth with constant number of two pairs of cusplets next to the central cusp. a, f: lingual views; b-e: labial views. a-c: upper teeth, d-f: lower teeth. Positions of teeth: a: 3, b: 6, c: 11, d: 2, e: 7, f: 12. Etmopterus granulosus

 

Material: Adult female specimen, nr. 78, 69 cm total length, SEM images. Upper teeth show a constant number of two pairs of cusplets next to the central cusp. Tooth c is an outlier showing unidistally four cusplets next to the central cusp. All labial views. a-c: upper teeth, d-f: lower teeth. Positions of teeth: a: 3, b: 7, c: 10, d: 2, e: 7, f: 14. Etmopterus granulosus

 

Material: Immature female specimen, nr. 81, 53 cm total length, SEM images. Upper teeth show a constant number of two pairs of cusplets next to the central cusp. All labial views. a-c: upper teeth, d-f: lower teeth. Positions of teeth: a: 2, b: 5, c: 10, d: 2, e: 7, f: 12. Etmopterus granulosus