ESPECIALLY MYCTOPHOIDS 37 
Palatine and ectopterygoid teeth barbed. Small supraorbital bone present and small 
supramaxilla. 50-60 vertebrae, approximately half being caudal. Ribs borne on 
small transverse processes. Body bearing two rows of arrow-shaped scutes on 
each flank. 
Genus CIMOLICHTHYS Leidy, 1857 
Dracnosis (emended). Cimolichthyidae in which the head is somewhat elongated 
with an acutely pointed anterior region. Palatine with two longitudinal rows of 
teeth, only innermost row barbed. Ectopterygoid teeth also barbed. Dentary with 
3 distinct rows of teeth. Dorsal fin short, mid-way along the back, consisting of 16 
rays. Anal fin shorter with 11 rays and remote in position. 
TYPE SPECIES. Czimolichthys levesiensis Leidy. 
REMARKS. The genus was originally erected by Leidy (1857) when he proposed 
the type species Cimolichthys levesiensis, based on palatine and ectopterygoid material 
showing the characteristic barbed teeth. 
Cimolichthys levesiensis Leidy 
(Text-figs. 16-21) 
1835 Saurodon leanus Agassiz ; Feuill.: 55 (evrore). 
1837 Saurodon leanus Agassiz ; 5; 1: pl. 25¢, figs. 30, 31 (evrore). 
1844 Saurodon leanus Agassiz ; 5; 1: 102 (errore). 
1850 Saurodon leanus Agassiz ; Dixon : 373, pl. 30, figs. 28, 29 ; pl. 32, fig. 10 (evvore). 
1857 Cimolichthys levesiensis Leidy : 95. 
1864 Plinthophorus robustus Giinther : 115, pl. 6. 
1878 Cimolichthys levesiensis Leidy ; Newton : 790. 
1878 Cimolichthys marginatus (Reuss) Newton : 792. 
1878 Cimolichthys lewesiensis Leidy ; Dixon: 400, pl. 30, figs. 28, 29 ; pl. 32, fig. Io. 
1888a Cimolichthys levesiensis Leidy ; Woodward : 316. 
1901 Cuimolichthys lewesiensis Leidy ; Woodward : 221. 
1901 Plinthophorus robustus Giinther ; Woodward : 229. 
1902 Cimolichthys lewesiensis Leidy ; Woodward: 44, pl. 9, figs. 10-14; pl. 12; text-fig. ro. 
1902 Plinthophorus vobustus Giinther ; Woodward : 48, pl. 12, fig. 5. 
1902 Cimolichthys marginatus (Reuss) ; Leriche : 140, pl. 4, figs. 6-12. 
1906 Cimolichthys marginatus (Reuss) ; Leriche : 96, text-fig. 16. 
1949 Cimolichthys marginatus (Reuss) ; Dartevelle & Casier : 222. 
D1AGNosiIs (emended). Czimolichthys in which the maximum width of the neuro- 
cranium slightly exceeds one-third of the length. Premaxilla ornamented with 
radiating tuberculated ridges. Length of mandible five times its greatest depth. 
Four ectopterygoid teeth, the foremost two being apically barbed. Approximately 
60 vertebrae of which 30 are caudal. Centra slightly longer than deep and mesially 
constricted. Pectoral fin with 12 rays, pelvic fin with Io or II rays arising below the 
posterior region of the dorsal fin. Dorsal fin with 15 or more rays, anal fin with ro 
rays. Body naked except for two rows of imbricate, arrowhead-shaped scutes on 
each flank. 
