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Cymatospira montfortianus
Taxonomy
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), 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), Hoare et al. (1997); it was recombined as Knightites montfortianum by West (1970); 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), Wagner (2023).
It was recombined as Patellostium montfortianum by Ulrich and Scofield (1897), Girty (1915), Morningstar (1922), 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), Hoare et al. (1997); it was recombined as Knightites montfortianum by West (1970); 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), Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1855 | Bellerophon montfortianum Norwood and Pratten p. 74 figs. pl. 9 f. 5a-c |
| 1891 | Bellerophon montfortianus White p. 26 figs. Pl 3, figs 15,16 |
| 1897 | Patellostium montfortianum Ulrich and Scofield pp. 854, 924 |
| 1911 | Patellostium montfortanum Raymond |
| 1912 | Bucanopsis montfortiana Mark p. 298 |
| 1915 | Patellostium montfortianum Girty pp. 172 - 174 figs. pl. 20 f. 1-3b |
| 1922 | Patellostium montfortianum Morningstar pp. 143, 251 figs. pl. 14 f. 13 |
| 1937 | Patellostium montfortianum Sturgeon p. 357 |
| 1942 | Cymatospira montfortianus Knight pp. 487 - 488 |
| 1964 | Knightites (Cymatospira) montfortianus Sturgeon p. 201 figs. pl. 31 f. 1-3 |
| 1967 | Knightites (Cymatospira) montfortianus Yochelson and Saunders p. 111 |
| 1970 | Knightites montfortianum West |
| 1984 | Knightites (Cymatospira) montfortianus Kues figs. f. 3.11 |
| 1985 | Cymatospira montfortianus Kues p. 12 figs. f. 2B-C |
| 1997 | Knightites (Cymatospira) montfortianus Hoare et al. p. 1027 |
| 2001 | Cymatospira montfortianus Kues and Batten pp. 15 - 16 figs. f. 3. 27-3.32 |
| 2002 | Knightites (Cymatospira) montfortianum Kues et al. pp. 125 – 126 fig. 3N |
| 2023 | Cymatospira montfortianus Wagner p. S3943 |
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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.
†Cymatospira montfortianus Norwood and Pratten 1855
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†Knightites (Cymatospira) montfortianus discordis Hoare et al. 1997
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. S. Kues et al. 2002 | The 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. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: base of the Desmoinesian to the top of the Artinskian or 312.80000 to 283.30000 Ma
Collections (68 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Moscovian | Argentina (La Rioja) | Knightites montfortianus (39939) | |
| Moscovian | USA (Oklahoma) | Patellostium montfortianum (90784) | |
| Moscovian | USA (Kentucky) | Knightites montfortianus (195795) | |
| Kashirian - Myachkovian | USA (New Mexico) | Knightites montfortianus (46548) | |
| Desmoinesian | USA (Missouri) | Knightites montfortianus (70134 70258 70271 70272 70278 70288 70290 70296 70297 70307 70381 70382 70483) | |
| Desmoinesian | USA (New Mexico) | Knightites montfortianus (46536) | |
| Desmoinesian | USA (Pennsylvania) | Patellostium montfortianum (184098) | |
| Desmoinesian | USA (Texas) | Patellostium montfortianum (11100) | |
| Desmoinesian | USA (Oklahoma) | Patellostium montfortianum (90781 90782 90783) | |
| Desmoinesian | USA (Kansas) | Patellostium montfortianum (924 934 971 974 1037 1042) | |
| Desmoinesian | USA (Ohio) | Knightites montfortianus (64888 64892 64897 64902 64913 64915 64916 64918 64919 64923 64925 64927 64929 64950) | |
| Kasimovian | USA (Texas) | Patellostium montfortianum (128580) | |
| Kasimovian - Gzhelian | USA (Utah) | Knightites montfortianus (39995) | |
| Missourian | USA (Maryland) | Cymatospira montfortianus (118828) | |
| Missourian | USA (Ohio) | Bucanopsis montfortiana (174923 175188) | |
| Missourian | USA (Texas) | Knightites montfortianus (217916) Patellostium montfortianum (156737) | |
| Missourian | USA (Missouri) | Patellostium montfortianum (157612) | |
| Missourian | USA (Pennsylvania) | Patellostium montfortanum (184105) Patellostium montfortianum (184101 184103) | |
| Missourian | USA (New Mexico) | Knightites montfortianum (50767) | |
| Gzhelian | USA (Texas) | Knightites montfortianus (187593) | |
| Virgilian | USA (Ohio) | Bucanopsis montfortiana (71993) | |
| Virgilian | USA (Texas) | Knightites montfortianus (217893 217897 217905 217932 217960 217992 217995 218002) | |
| Virgilian | USA (Nebraska) | Bellerophon montfortianus (157668) | |
| Virgilian | USA (Maryland) | Cymatospira montfortianus (118827) | |
| Artinskian | USA (Texas) | Bellerophon montfortianus (119870) |