Arnoglossus sp.

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 : 26

Arnoglossus sp.

Figure 15a–b

Remarks Te otoliths exhibit characteristic features, including a thick and convex structure (biconvex) with both faces of the otolith being convex, especially the outer face. Tey also have a well-divided sulcus that is deeply incised and surrounded by very thick cristae. Tese features comply with those of Arnoglossus (Lin & Chang, 2012; Schwarzhans, 1999). It is worth noting that Arnoglossus is the most abundant flatfish genus in the collection. However, it is also important to acknowledge that a more comprehensive reference collection for this genus in Taiwan is still under development.

Figures

Fig. 15 Fish otoliths from the Lower Pliocene Gutingkeng Formation,southern Taiwan. Scale bars =1 mm. Images are inner views unless otherwise indicated. a–b Arnoglossus sp., Site 5, sand layer, ASIZF 0100676–677.c Pardachirus sp., Site 5, mud layer, ASIZF 0100678.d Heteromycteris sp., Site 5, sand layer, ASIZF 0100679. e, Cynoglossus sp., Site 5, mud layer, ASIZF 0100680. f, Parapercis sp., Site 5, mud layer,ASIZF 0100681. g Callionymidae indet., Site 2, ASIZF 0100682. h Champsodon sp., Site 2, ASIZF 0100683. i Trichiuridae indet., Site 5, sand layer, ASIZF 0100684. j Labridae indet., Site 2, ASIZF 0100685.1, ventral view; 2, inner view