26 The Ganoids 
and German Triassic, and Lepidotes minor in the English Triassic. 
Another well-known European species is Lepidotes mantellt. 
The Isopholide (Eugnathide) differ from the families last 
named in the large pike-like mouth with strong teeth. The 
mandibular suspensorium is inclined backwards. The body is 
elongate, the vertebrae forming incomplete rings; the dorsal 
fin is short with large fulcra. 
Isopholis dentosus is found with numerous other species in 
the British Triassic. Caturus furcatus is especially characteristic 
Fic. 16.—Tetragonolepis semicinctus Brown. Lias. Family Semionotide. 
(After Woodward.) 
of Triassic rocks in Germany. Ptycholepis marshi occurs in 
the Connecticut valley. 
The Macrosemude are elongate fishes with long dorsal fin, 
the numerous species being found in the Triassic, Jurassic, and 
Cretaceous of Europe. Macrosemius rostratus has a very high, 
continuous dorsal. Macropistius arenatus is found in the 
Cretaceous of Texas, the only American species known. Promi- 
nent European genera are Notagogus, Ophiopsis, and Petalopteryx. 
Intermediate between the allies of the gars and the modern 
herrings is the large extinct family of Pholidophoride, referred 
by Woodward to the Isospondyli, and by Eastman to the Lepi- 
dostei. These are small fishes, fusiform in shape, chiefly of 
