Archaeotolithus bornholmiensis (Malling & Gronwall , 1909)

Schwarzhans, Werner & Keupp, Helmut, 2022, Early teleost otolith morphogenesis observed in the Jurassic of Franconia, Bavaria, southern Germany, Zitteliana 96, pp. 51-67 : 51

Animalia

Taxon classification Archaeotolithus bornholmiensis (Malling & Gronwall, 1909)

Plate 4, fig. 1

Otolithus bornholmiensis 1909 Otolithus bornholmiensis - Malling & Grønwall: pl. 11, figs 14-16.

Arcaeotolithus bornholmiensis 1912 Arcaeotolithus bornholmiensis (Malling & Grønwall, 1909) - Stolley: pl. 7, figs 4-5.

Otolithus ?2014 archaeotoliths group 1 - Hesse: fig. 28A-B.

Material.

1 specimen from the late Pliensbachian, Hawkerense subzone, of Buttenheim (SNSB-BSPG 2022 IV 7, Plate 4 , fig. 1).

Differential diagnosis.

Archaeotolithus bornholmiensis is the only species in the genus with almost no indication of a sulcus and further differs from its congeners in the more strongly convex inner face. It is thus also the one most resembling the characteristics of a lapillus.

Figures

Plate 4. Otoliths of Archaeotolithus. fig. 1: Achaeotolithus bornholmiensis (Malling & Gronwall, 1909), from the late Pliensbachian of Buttenheim, holotype SNSB-BSPG 2022 IV 7, EPH horizon. figs 2 - 4: Archaeotolithus doppelsteini sp. nov., from the late Pliensbachian of Buttenheim, EPH horizon; 2: holotype SNSB-BSPG 2022 IV 8; 3 - 4: paratypes SNSB-BSPG 2022 IV 9. figs 5 - 7: Archaeotolithus trigonalis Stolley, 1912, from the late Pliensbachian of Buttenheim, EPH horizon, figured specimens SNSB-BSPG 2022 IV 12.