Protomyctophum ahunga Schwarzhans, 2019

Fig. 5P-Z

Protomyctophum ahunga 2019 Protomyctophum ahunga - Schwarzhans: figs 51.1-5.

Protomyctophum ahunga 2021 Protomyctophum ahunga Schwarzhans, 2019 - Schwarzhans and Nielsen: fig. 7i-m.

Material.

160 specimens: 158 specimens (figured specimens SMF PO 101.115), Miya River at Oda and Numa, Tsuyama City, Okayama Prefecture, Takakura FM, levels MS 06, MS 07, MS 15, MS 22, MS 27, MS 36, MS 52, MS 70, MS 80, MS 90, b, d, f9, f10, f40, g, gh, h and j, late Burdigalian, diatom zone 3A-3B ; 2 specimens, Osedani, Toyama City, Toyama Prefecture, Higashibessho FM, level H 20, late Burdigalian to early Langhian, diatom zone 3A-4A .

Discussion.

For a detailed description, see Schwarzhans (2019) and the subsequent update in Schwarzhans and Nielsen (2021). Protomyctophum ahunga is a typical and rather common species in the late Burdigalian of New Zealand and Chile but has not been found in coeval sediments of the Caribbean (Trinidad or Venezuela). Its common occurrence in late Burdigalian to early Langhian sediments of Japan indicates that it may have had an antitropical distribution in the Pacific Ocean during the late early and early middle Miocene.

Subfamily Lampanyctinae Paxton, 1972