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Cymatospira montfortianus

Gastropoda - Bellerophontida - Bellerophontidae

Bellerophon montfortianum was named by Norwood and Pratten (1855). It is not a trace fossil.

It was recombined as Patellostium montfortianum by Ulrich and Scofield (1897), Girty (1915), Morningstar (1922) and Sturgeon (1937); it was recombined as Patellostium montfortanum by Raymond (1911); it was recombined as Bucanopsis montfortiana by Mark (1912); it was recombined as Knightites (Cymatospira) montfortianus by Sturgeon (1964), Yochelson and Saunders (1967), Kues (1984) and Hoare et al. (1997); it was recombined as Knightites (Cymatospira) montfortianum by Kues et al. (2002); it was recombined as Cymatospira montfortianus by Knight (1942), Kues (1985), Kues and Batten (2001) and Wagner (2017).

Synonymy list
YearName and author
1855Bellerophon montfortianum Norwood and Pratten p. 74 figs. pl. 9 f. 5a-c
1891Bellerophon montfortianus White p. 26 figs. Pl 3, figs 15,16
1897Patellostium montfortianum Ulrich and Scofield pp. 854, 924
1911Patellostium montfortanum Raymond
1912Bucanopsis montfortiana Mark p. 298
1915Patellostium montfortianum Girty pp. 172 - 174 figs. pl. 20 f. 1-3b
1922Patellostium montfortianum Morningstar pp. 143, 251 figs. pl. 14 f. 13
1937Patellostium montfortianum Sturgeon p. 357
1942Cymatospira montfortianus Knight pp. 487 - 488
1964Knightites (Cymatospira) montfortianus Sturgeon p. 201 figs. pl. 31 f. 1-3
1967Knightites (Cymatospira) montfortianus Yochelson and Saunders p. 111
1984Knightites (Cymatospira) montfortianus Kues figs. f. 3.11
1985Cymatospira montfortianus Kues p. 12 figs. f. 2B-C
1997Knightites (Cymatospira) montfortianus Hoare et al. p. 1027
2001Cymatospira montfortianus Kues and Batten pp. 15 - 16 figs. f. 3. 27-3.32
2002Knightites (Cymatospira) montfortianum Kues et al. pp. 125 – 126 fig. 3N
2017Cymatospira montfortianus Wagner p. S3943

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EubilateriaAx 1987
classGastropodaCuvier 1797
orderBellerophontidaUlrich and Scofield 1897

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

B. S. Kues et al. 2002The largest specimen (Fig. 3N) is approximately 15 mm wide, and bears approximately eight pairs of rather sharpcrested collabral folds on the dorsal flanks of the shell. Each pair of folds is in opposition across the depressed medial area, which bears the narrow, flat, very slightly elevated selenizone. Spiral ornamentation consists of fine lirae that cross the collabral folds and occur in two ranks, with each pair of primary lirae separated by two or three smaller secondary lirae. A thick inductural knob occupies the early part of the body whorl and protrudes a short distance beyond the aperture. The widely flaring apertural lips of this species are not preserved on these fragmentary Bar B specimens.