ORTHOCERITID.E. 
5 
Fig. 2. 
Orthoceras Bevalense. — a, part of a specimen, the whole of which measures 7^ 
inches (s, siph uncle) ; b, section, showing siphuncle at s. Natural size. 
Orthoceras regoilare, Schlotheim. 
1732. Orthoceratites siphunculo axem transeunte See.., Breyn, Biss. 
Phys. de Polythalamiis, p. 31, tab. iii. fF. 1-4. 
1775. Orthoceratites^ Knorr & Walch, Becueil des Monumens des 
Catastrophes, tom. iii. p. 141, Suppl. iv. c. f. 2, p. 142, Suppl. iv. d. 
f. 5. 
1813. Orthoceratites Oelandicus, Schlotheim, in Leonhard’s Taschenh. 
fiir Mineralogie, Abth. i. p. 34. 
1820. Orthoceratites regularise Schlotheim, Die Petrefactenkimde, p. 54. 
? 1837. Orthoceratites regularise Bronn, Lethaea Geognostica, zweite 
Auflage, Band i. p. 100, tab. i. ff. 10, a, h (excl. c). 
