Bollmannia boqueronensis Evermann & Marsh, 1899

Schwarzhans, Werner W. & Aguilera, Orangel A., 2024, Otoliths of the Gobiidae from the Neogene of tropical America, Swiss Journal of Palaeontology (13) 143 (1), pp. 1-129 : 25-27

publication ID	https://doi.org/10.1186/s13358-023-00302-5
persistent identifier	https://treatment.plazi.org/id/492D87AA-FFB3-FFFE-0236-F89663C1FADD
treatment provided by	Felipe
scientific name	Bollmannia boqueronensis Evermann & Marsh, 1899
status

Treatment

Bollmannia boqueronensis Evermann & Marsh, 1899 View in CoL

Figure 15a–h View Fig

Material (fossil specimens) 92 specimens: Zanclean (49 specimens): Atlantic Panama, Cayo Agua FM , 2 specimens PPP 1276 ; Venezuela, Cubagua FM , 2 specimens PPP 2554 ; 3 specimens PPP 2555 ; 1 specimen PPP 2556 (figured specimen NMB P15474 View Materials ) ; 1 specimen PPP 2557 ; 21 specimens PPP 2568 ; 19 specimens PPP 2571 (figured specimen NMB P15473 View Materials ) . Piacenzian (3 specimens): Atlantic Panama, Escudo de Veraguas FM , 2 specimens PPP 2181 ; 1 specimen PPP 2182 (figured specimen NMB P15472 View Materials ) . Gelasian (40 specimens): Atlantic Panama, Escudo de Veraguas FM , 7 specimens PPP 2170 (figured specimens NMB P15471 View Materials ) ; Bastimentos FM , Ground Creek Unit , 12 specimens PPP 1252 ; 1 specimen PPP 1304 ; Atlantic Costa Rica, Moin FM , 4 specimens PPP 1773 ; 1 specimen PPP 2038 ; 5 specimens PPP 3259 . Calabrian: Atlantic Panama, Swan Cay FM , 4 specimens PPP 2221 ; Venezuela, Cumaná FM , 6 specimens PPP 3038 .

Description Otolith size up to 3 mm in length. OL:OH = 1.0–1.08; OH:OT = 2.9–3.3. Otolith shape nearly rectangular, predorsal angle high, broadly rounded, postdorsal angle higher than predorsal angle, postdorsal projection blunt, only slightly longer than postventral angle, not bent outward. Ventral rim straight, horizontal. Anterior and posterior rims nearly vertical; preventral angle blunt, nearly orthogonal; posterior rim with distinct indentation at its middle. All rims smooth, dorsal and anterior rims slightly undulating, weakly crenulated in small specimens ( Fig. 15e–h View Fig ).

Inner face flat in vertical direction and slightly bent in horizontal direction. Sulcus sole-shaped with low ostial lobe, deepened, inclined at 10–15°. OL:SuL= 1.7–1.9. Subcaudal iugum large, broad. Dorsal depression wide, relatively deep and close to sulcus with distinct crista superior. Ventral furrow distinct, moderately close to ventral rim of otolith. Outer face distinctly convex, strongest inframedian, relatively smooth with few faint furrows on dorsal field.

Discussion Bollmannia boqueronensis has been an inconspicuous and apparently widely distributed species in the tropical Atlantic since at least Early Pliocene. For comparison with coeval species, see below. Extant specimens of B. boqueronensis were collected over sandy and muddy bottoms and flat areas adjacent to coral reefs at 8.4–73 m throughout the Caribbean and the eastern Gulf of Mexico ( Van Tassell et al., 2012).