PYCXODONTIDJE. 
247 
Gyrocius platurus, L. Agassiz, op. cit. Feuill. (1834), p. 16 (name 
only); A. Wagner, Abh. k. bay. Akad. Wiss., math.-phys. 
Cl. vol. ix. (1862), p. 336. Micro don platurus, L. Agassiz, 
op. cit. vol. ii. pt. i. (1833), p. 16. Gyrodus truncatus , 
A. Wagner, Joe. cit. vol. vi. (1851), p. 46.—Lower 
Kimmeridgian (Lithographic Stone) ; Bavaria. [Nearly 
complete fish ; Palaeontological Museum, Munich.] 
Gyrodus punctatus , L. Agassiz, op. cit. vol. ii. pt. ii. (1844), p. 231, 
pi. lxix. a. fig. 24 ; A. S. Woodward, Ann. Mag. Nat. Hist. 
[6] vol. xii. (1893), p. 400, pi. xviii. figs. 2-4. (?) Pyc- 
noclus umbonatus, L. Agassiz, loc. cit. pt. i. (1833), p. 16, 
pt. ii. (1844), p. 194, pi. lxxii. a. figs. 1, 3, 4 (non fig. 2).— //t 
Corallian ; Malton, Yorkshire. [Vomer ; York Musmim ^///?; 
Gyrodus sculptus: Pycnodus sculptus , J. Cornuel, Bull. Soc. Geol. 
France, [3] vol. v. (1877), p. 611, pi. xi. figs. 8-10, and 
ibid. vol. viii. (1880), p. 157, pi. iii. figs. 20, 21. Cos- 
modus sculptus, H. E. Sauvage, Bull. Soc. Sci. Nat. Yonne, 
vol. xxxiii. pt. ii. (1879), p. 49.—Neocomian ; Wassy, 
Haute Marne, and Soulaines, Aube, France. [Imperfect 
splenials.] 
Gyrodus (?) schusteri, F. A. Boemer, Verstein. Norddeutsch. 
Oolithengeb., Nachtr. (1839), p. 54.—Purbeckian ; Salz¬ 
burg, Osterwald. 
An imperfect vomer, with widely-spaced smooth teeth, appa¬ 
rently referable to a large species of Gyrodus , is described by 
Egerton from the Kimmeridge Clay of Kimmeridge, Dorsetshire, 
and wrongly named Sphcerodus gig as (Quart. Journ. Geol. Soc. 
vol. xxv. 1869, p. 385, woodc. fig. 5). 
Some prehensile front teeth from the Kimmeridgian of Berne, 
Switzerland, apparently also of Gyrodus , are erroneously referred 
to Capitodus under the name of C. gresslyi by J. Thurmann, Nouv. 
Mem. Soc. Helv. Sci. Nat. vol. xviii. (1864), p. 431, pi. Ixi. fig. 21. 
The following names have also been given to indeterminable 
detached teeth:— 
Gyrodus dixoni , W. A. Ooster, Protozoe Helvetica, vol. ii. (1870), 
p. 46, pi. ix. fig. 7. Figure by F. Dixon, Geol. Sussex 
(1850), pi. xxxii.* fig. 6.—Chalk; Sussex and Bernese Alps. 
Gyrodus ellipticus , E. von Eichwald, Leth. Bossica, vol. ii. (1868), 
p. 1211, pi. xxxviii. fig. 11.—Neocomian; Biassala, Crimea. 
Gyrodus muensteri , L. Agassiz, Poiss. Foss. vol. ii. pt. ii. (1844), 
p. 235, pi. lxix. a. fig. 17; A. E. Beuss, Verstein. bohm. 
Kreideform. pt. i. (1845), p. 9, pi. iv. figs. 57-60.—Ceno¬ 
manian ; Bavaria and Bohemia. 
