Tymolus uncifer ( Ortmann, 1892 )

Ando, Yusuke, Kawano, Shigenori, Muramiya, Yusuke, Niiyama, Sota, Kameyama, Sohiko & Shimoyama, Shoichi, 2020, Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae), Zootaxa 4878 (3), pp. 523-541 : 532

Tymolus uncifer ( Ortmann, 1892)

( Figs. 5B, C )

Cyclodrippe uncifera Ortmann, 1892: 560.

Tymolus uncifer .— Balss 1922: 286.—Karasawa 1993: 43, pl. 6, fig. 4.— Takeda 1997: 232.— Karasawa 1997: 41, pl. 8, fig. 10.— Ikeda 1998: 21, pl. 5, figs. 1–3. –– Takeda 2001: 223.— Spiridonov & Türkay 2007: 6–7, figs. 4D–E.— Kitamura & Shiba 2008: 15.— Komatsu & Komai 2009: 598, fig. 3F.

Material examined. MFM 145610, MFM 145611 and five other referred specimens.

Remarks. Although MFM145610 lacks the rostrum and six other specimens are chelipeds, their features match those of Tymolus uncifer ( Ortmann, 1892) . The fossil specimens are known from the Lower Pleistocene Soga and Hijikata formations of Kakegawa Group (Karasawa 1993, 1997; Kitamura & Shiba 2008). The extant species is known around Japanese coasts (e.g., Takeda 2001; Spiridonov & Türkay 2007).

Figures

FIGURE 5. Decapods from the Moeshima Silt Bed. A, Munida sp., MFM145609, dorsal view of carapace. B, C, Tymolus un- cifer (Ortmann, 1892); B, MFM145610, dorsal view of carapace; C, MFM145611, lateral view of left cheliped. D, Podocatactes hamifer Ortmann, 1893, MFM145618, dorsal view of carapace. E–H, Carcinoplax longimana (de Haan, 1833); E, MFM145620, carapace and chelipeds; E1, dorsal view; E2, ventral view; F, MFM145621, dorsal view of carapace; G, MFM145622, carapace; G1, dorsal view; G2, ventral view; H, MFM145623, lateral view of left cheliped. Scale bars A, D–H indicate 5.0 mm, and B and C indicate 1.0 mm.