... that some of the first likely Libotonius(pictured) fossils collected are lost at the Smithsonian?
Source: Wilson 1978 doi:10.1139/e78-075 "Since then Pearson's collection was forwarded to, but never accessioned in, the Smithsonian Institution. and it cannot now be located.Wilson 1979 doi:10.2307/1443214 "Pearson's specimens cannot be located, but they probably included specimens of the new species described here, rather than a species of the similar Erismatopterus"
ALT1: ... that Libotonius(pictured) are small fish, with adults ranging between just 10.6–40.0 mm (0.42–1.57 in)? Source: Wilson 1977 Page 44L. blakeburnensis GENERAL FEATURES Summary statistics for the species are given in Table 5. The known specimens (Fig. 13) represent only a small size range, from about 30 to possibly 40 mmWilson 1979 doi:10.2307/1443214L. pearsoni Description.-All specimens small compared with other Eocene percopsiforms, ranging from 10.6–20.8 mm (0.42–0.82 in) standard length