. The Quarterly journal of the Geological Society of London . erminal lip. It seems tohave been the first lip formed; and if fig. 3 of DOrbignys platerepresents the lip of an older specimen, it would tend to show thatthe lips vary very much with age. Our specimen is from Bradford,where the species is not uncommon. 8. A. SUBCOSTATUS, Buckman, MS. This shell, from near Sherborne, belongs to the discoid section ofAmmonites, and is therefore only placed here on account of its spa-thulate termination, which differs so much from that of the shellwith which it has been confounded, namely A. subradiat
. The Quarterly journal of the Geological Society of London . erminal lip. It seems tohave been the first lip formed; and if fig. 3 of DOrbignys platerepresents the lip of an older specimen, it would tend to show thatthe lips vary very much with age. Our specimen is from Bradford,where the species is not uncommon. 8. A. SUBCOSTATUS, Buckman, MS. This shell, from near Sherborne, belongs to the discoid section ofAmmonites, and is therefore only placed here on account of its spa-thulate termination, which differs so much from that of the shellwith which it has been confounded, namely A. subradiatus. Probably this is the A. subradiatus of DOrbigny, T. J. pi. 1 & 2.; but if so it differs so much from his A. subradiatuspreviously referrred to that we feel justified in proposing a freshname for it. Our specimen is the only example we have met withwith the termination : still it is not an uncommon fossil near Sher-borne, though it occurs very sparingly at Bradford Abbas and Half-way House. Fig. 4.—Termination of Ammonites Gervillii, 9. A. Gervillii, Sow. p. 184, tab. A. fig. 3; DOrb. pi. 1-7. (Pig. 4.)This is a shell with a very curious and interesting termination,which we have named delphinulate, because its side view is so muchlike that of the head of the classic Dolphin. Sowerby says, This 64 J. BTJCKMAN ON AMMONITES FROM THE species occurs in a marly limestone which is replete with grains ofiron ochre. It is from Bayeux, in Normandy *. Fig. 5.—Termination of Ammonites Brongniarti, Sow.
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
