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Eleganticeras exaratum

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy
Ammonites exaratus was named by Young and Bird (1828).

It was recombined as Harpoceras exaratum by Howarth (1962); it was recombined as Cleviceras exaratum by Howarth (1992); it was recombined as Eleganticeras exaratum by Bécaud (2006) and Benzaggagh et al. (2022).

Sister species lacking formal opinion data
E. elongatum

Synonyms
Synonymy list
YearName and author
1828Ammonites exaratus Young and Bird p. 266
1855Ammonites erratus Simpson
1855Ammonites multifoliatus Simpson p. 73
1962Harpoceras exaratum Howarth p. 412
1962Monestieria errata Howarth p. 412
1992Cleviceras exaratum Howarth p. 90 figs. Pl 9, figs 2-6; pl 10, figs 1-8; pl 11, figs 1-17; pl 12, figs 1-5; pl 13, figs 1,2; text-figs 10,16
2006Eleganticeras exaratum Bécaud p. 50 figs. Pl 6, fig 2
2022Eleganticeras exaratum Benzaggagh et al. p. 10 fig. 9A,B

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyHildoceratoidea(Hyatt 1867)
familyHildoceratidaeHyatt 1867
subfamilyHarpoceratinaeNeumayr 1875
genusEleganticeras
speciesexaratum(Young and Bird 1828)

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.

†Eleganticeras exaratum Young and Bird 1828
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Invalid names: Ammonites erratus Simpson 1855 [synonym], Ammonites multifoliatus Simpson 1855 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmean
height137.5
diameter182.3
inflation120.8
shell height159.0
shell diameter1147.0
shell inflation147.5

Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2003, Kiessling 2004

Age range: base of the Toarcian to the top of the Late/Upper Toarcian or 182.70000 to 175.60000 Ma

Collections (94 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0Germany (Bavaria) Harpoceras exaratum (51270 51271 51272 51273)
Early/Lower Toarcian183.0 - 182.0United Kingdom (Gloucestershire) Harpoceras exaratum (204117)
Early/Lower Toarcian183.0 - 182.0Canada (British Columbia) Cleviceras exaratum (53618 55912 55946 55947 55948 55949 55952 55953 55954 55955 55956 55957 56218) Harpoceras exaratum (53375 53466 53467)
Early/Lower Toarcian183.0 - 182.0USA (Nevada) Cleviceras exaratum (207998 208071)
Early/Lower Toarcian183.0 - 182.0Spain (Cantabria) Cleviceras exaratum (169507 169509 169510 222264 222266 222267 222269)
Falciferum183.0 - 182.0Tunisia Harpoceras exaratum (170590)
Falciferum183.0 - 182.0France (Deux-Sevrès) Eleganticeras exaratum (140859 140860)
Falciferum183.0 - 182.0Bulgaria Cleviceras exaratum (150940)
Falciferum183.0 - 182.0Germany Cleviceras exaratum (228508 228509)
Falciferum183.0 - 182.0Morocco Eleganticeras exaratum (228341 228342 228343 228344)
Falciferum183.0 - 182.0United Kingdom (Yorkshire) Harpoceras exaratum (147832 147843 147844 154228) Harpoceras exaratum, Harpoceras sp. nov. (147840 147855) Harpoceras exaratum, Monestieria errata, Harpoceras sp. nov. (147831 147841) Harpoceras sp. nov. (147838)
Kanense183.0 - 182.0Canada (Alberta) Cleviceras exaratum (198518 198519 198520 198521 198523 198525)
Early/Lower Toarcian - Late/Upper Toarcian183.0 - 175.6Canada (British Columbia) Cleviceras exaratum (53090)
Early/Lower Toarcian - Middle Toarcian183.0 - 175.6Canada (Alberta) Cleviceras exaratum (56234 56235 56236)
Early/Lower Toarcian - Middle Toarcian183.0 - 175.6USA (Alaska) Cleviceras exaratum (55661)
Early/Lower Toarcian - Middle Toarcian183.0 - 175.6Canada (British Columbia) Cleviceras exaratum (53094 53097 55681 55769 55770 55777 55950 55951 56217 56220 56221 56226 56334 56335 56336) Harpoceras exaratum (56222 56223 56224 56225 56227 56228 56232 56233 56327 56328 56329 56330 56331 56332 56333 56337)
Toarcian182.7 - 174.1Canada (Yukon) Harpoceras exaratum (34198)
Middle Toarcian182.0 - 175.6Canada (British Columbia) Cleviceras exaratum (56219)
Late/Upper Toarcian180.1 - 175.6United Kingdom (Yorkshire) Harpoceras exaratum (219476)