Hymenocephalus striatissimus, Jordan & Gilbert, 1904

Lin, Chien-Hsiang, Wu, Siao-Man, Lin, Chia-Yen & Chien, Chi-Wei, 2023, Early Pliocene otolith assemblages from the outer-shelf environment reveal the establishment of mesopelagic fish fauna over 3 million years ago in southwestern Taiwan, Swiss Journal of Palaeontology (23) 142 (1), pp. 1-40 : 17

publication ID	https://doi.org/10.1186/s13358-023-00288-0
persistent identifier	https://treatment.plazi.org/id/0392F83E-B051-FFC7-FF20-194EFF6EB5C7
treatment provided by	Felipe
scientific name	Hymenocephalus striatissimus
status

Treatment

Hymenocephalus striatissimus View in CoL Jordan & Gilbert, 1904

Figure 11a View Fig

Remarks Te otolith of Hymenocephalus striatissimus , represented by a single specimen, features a high-bodied shape with a fused colliculum and a prominent antero-dorsal lobe that extends to approximately one third of the otolith’s height (OH). Tese characteristics align well with the otoliths of the extant H. striatissimus ( Schwarzhans, 2014: Fig. 32; Fig. 10f–g View Fig ). Other species within the genus Hymenocephalus also possess very similar otoliths, such as H. megalops Iwamoto & Merrett, 1997 and H. torvus Smith & Radcliffe, 1912 (see Schwarzhans, 2014 for figures), but these species appear to have considerable geographic separation from the fossil sites. In addition, the otolith images depicted by Ohe as H. striatissimus (1983: pl. 13, Fig. 7 View Fig , 8 View Fig ) and H. striatissimus hachijoensis (1983: pl. 12, Fig. 9 View Fig , pl. 13, Fig. 4 View Fig ) are not clear enough for species identification, but they certainly do not belong to H. striatissimus , as the otoliths possess a well-divided sulcus.