206 
Pachyteuthis subextensa. — Acroteuthis conformis. 
Pars 11 
Pachyteuthis subextensa Nikitin sp. 
1884 Belemnites s ubextensus 
1884 B elemnites'suhextensus 
1885 Belemnites subextensus 
1885 B elemnites subextensus 
1899 Belemnites subextensus 
Nikitin, Blatt 66, p. 80. 
Nikitin, Kostroma p. 61, t. VI, f. 28. 
Nikitin, Elatma II, p. 26. 
Nikitin, Blatt 71, p. 143, t. VI, f. 28. 
Pompeckj, Mar. Mesoz. p. 453 -|-. 
BiiBland, Arktik. Ob. Jura. 
Pachyteuthis iii. f. subcxtensa-Panderi Foinpeckj sp. 
1893 — Belemnites m. f. subextensus- Pander i Pompeckj, 
Cape Flora p. 100, t. I, f. 18 — 21. 
1899 Belemnites m. f. subextensus- Pander i Pompeckj, Mar. 
Mesoz. p. 4544 -. 
Arktik. Ob. Jura. 
2. Geu.: Acroteuthis Stolley 
(1911, Belemniten p. 217, 219). 
= siibquadrati Steinmann (1910, Belemnoidea p. 118). 
= Pisetrobelus pars Pavlow (1913, Ceph. cret. inf. p. 15). 
Querschnitt lateral groBer ais dorsoventral. 
Typus: Acroteuthis subqtmdrata Roemer sp. 
Acroteuthis anabarensis Pavlow sp. 
1913 Pisetrobelus anabarenais Pavlow, Ceph. Cret. inf. p. 16, 
t. II, f. 1—3. 
N.-Sibirien. Unt. Kxeide. 
Acroteuthis ceutralis v. Eichwald sp. 
1868 Belemnites centralis v. Eichwald, Lethaea rossica p. 1008, 
t. XXXII. f. 12. 
1883 Belemnites centralis Mayer-Eymar, Klassif. p. 642-f-- 
RuBland. Ob. Jura. 
* Acroteuthis colossica Jasikow sp, 
1835 Belemnites colossicus Jasikow, Simbirsk p. 332. 
1901 Belemnites colossicus Pavlow, Cret. inf. p. 84, t. VIII, f. 3. 
RuBland. Neocom. 
Acroteuthis conformis v. Eichwald sp. 
1871 Belemnites conformis v. Eichwald, Alaska p. 153, t. XI, 
f. 20—24. ' 
Alaska. Unt. Kreide. 
