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Gymnotoceras blakei

Cephalopoda - Ceratitida - Ceratitidae

Taxonomy
Ammonites blakei was named by Gabb (1864). Its type specimen is USNM 12512 and is a 3D body fossil. Its type locality is Star Canon, Humboldt, which is in an Illyrian carbonate limestone in Nevada.

It was recombined as Ceratites (Gymnotoceras) blakei by Smith (1904), Hyatt and Smith (1905), Smith (1914); it was recombined as Gymnotoceras blakei by Meek (1877), Spath (1934), Silberling and Nichols (1982), Konstantinov (1991), Monnet and Bucher (2005).

Sister species lacking formal opinion data
G. geminatus, G. herschey, G. todtmannae

Synonyms
Synonymy list
YearName and author
1864Ammonites blakei Gabb p. 24 figs. Pl 4, figs 14-15
1877Gymnotoceras blakei Meek p. 113 figs. Pl 10, fig 10; pl 11, fig 6
1904Ceratites (Gymnotoceras) blakei Smith pp. 386 - 387 figs. Plate XLIII, Figs. 9-10; Plate XLIV, Figs. 2-3
1905Ceratites (Gymnotoceras) blakei Hyatt and Smith p. 173 figs. Pl 22, figs 1-23
1914Ceratites (Gymnotoceras) blakei Smith p. 109 figs. Pl 3, figs 10-23; pl 16, figs 8-10; pl 65, figs 14-19; pl 66, figs 1-9
1914Beyrichites falciformis Smith p. 116 figs. Pl 91, figs 11-13; pl 92, figs1-8
1934Beyrichites falciformis Spath
1934Gymnotoceras blakei Spath
1982Gymnotoceras blakei Silberling and Nichols p. 26 figs. Pl 8, figs 6-19; pl 9, figs 1-18
1991Gymnotoceras blakei Konstantinov p. 8 figs. Pl 1, figs 1-4; text-figs 2,3
2005Gymnotoceras blakei Monnet and Bucher p. 27 figs. 16,25; pl 18, figs 6,7

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderCeratitidaHyatt 1884
superfamilyCeratitoidea(Mojsisovics 1879)
familyCeratitidaeMojsisovics 1879
subfamilyBeyrichitinae()
genusGymnotoceras
speciesblakei()

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.

†Gymnotoceras blakei Gabb 1864
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Invalid names: Beyrichites falciformis Smith 1914 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height619.36.0036.025.312.6
shell diameter638.814.871.647.222.7
shell inflation66.724.408.807.301.93

Composition: aragoniteo
Environment: marinec
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:33:06
Modified: 2005-10-06 16:36:47
Source: o = order, c = class
References: Kiessling 2003, Kiessling 2004

Age range: Illyrian or 243.33000 to 241.46400 Ma

Collections (31 total)


Time interval Ma Country or state Original ID and collection number
Anisian246.7 - 241.464Svalbard and Jan Mayen Gymnotoceras blakei (212789)
Anisian246.7 - 241.464Svalbard and Jan Mayen (Barentsøya) Gymnotoceras blakei (212892)
Anisian246.7 - 241.464Russian Federation (Primorye) Beyrichites falciformis (46900)
Anisian246.7 - 241.464Vietnam Gymnotoceras blakei (44787)
Anisian246.7 - 241.464USA (Nevada) Ceratites blakei (33197)
Illyrian243.33 - 241.464Canada (British Columbia) Gymnotoceras blakei (216620)
Illyrian243.33 - 241.464USA (Nevada) Ammonites blakei (101858 142617) Beyrichites falciformis, Ceratites blakei (142669) Ceratites blakei (33270) Gymnotoceras blakei (38920 38924 38925 39088 40760 47953 115563 115565 115566 115567 115568 142868 142996 143013 143014)
Illyrian243.33 - 241.464Russian Federation Gymnotoceras blakei (97134 107205 133200 151167 151168 151169)