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Harpoceras falciferum

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy
Ammonites falcifer was named by Sowerby (1820).

It was recombined as Harpoceras (Harpoceras) falciferum by Bécaud (2006), Kovács (2011); it was recombined as Harpoceras falciferum by Guex (1972), Guex (1973), Howarth (1992), Benzaggagh et al. (2022).

Synonyms
Synonymy list
YearName and author
1820Ammonites falcifer Sowerby p. 99 figs. Pl 254, fig 2
1828Ammonites mulgravius Young and Bird p. 266 figs. Pl 13, fig 8
1898Harpoceras fellenbergi Hug p. 9 figs. Pl 2, fig 6; pl 4, fig 3
1926Harpoceras falcula Buckman figs. Pl 682
1927Tardarpoceras tardum Buckman figs. Pl 741
1927Harpoceras concinnum Buckman p. 742
1927Harpoceras falciferoides Buckman p. 749
1928Phaularpites exiguus Buckman p. 775A
1962Harpoceras exiguum Howarth p. 411
1972Harpoceras falciferum Guex figs. Pl 5, fig 6
1973Harpoceras falciferum Guex p. 500 figs. pl.2 fig. 7, pl. 3 fig. 4, pl. 4 fig. 2, pl. 14 figs 16, 20, 21
1992Harpoceras falciferum Howarth p. 119 figs. Pl 18, fig 3; pl 19, figs 2-4; pl 20, figs 1-11; text-figs 18F,19B,27-34
2006Harpoceras (Harpoceras) falciferum Bécaud p. 61 figs. Pl 19, fig 1; pl 20, fig 1; pl 24, fig 2; pl 26, figs 1-4; pl 27, figs 1,2; pl 32, figs 2,4
2011Harpoceras (Harpoceras) falciferum Kovács p. 28 figs. Pl 7, fig 2; pl 11, fig 1
2022Harpoceras falciferum Benzaggagh et al. p. 10 figs. 9G, 10A-C

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyHildoceratoidea(Hyatt 1867)
familyHildoceratidaeHyatt 1867
subfamilyHarpoceratinaeNeumayr 1875
genusHarpoceras
speciesfalciferum(Sowerby 1820)

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.

†Harpoceras falciferum Sowerby 1820
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Invalid names: Ammonites mulgravius Young and Bird 1828 [synonym], Harpoceras concinnum Buckman 1927 [synonym], Harpoceras falciferoides Buckman 1927 [synonym], Harpoceras falcula Buckman 1926 [synonym], Harpoceras fellenbergi Hug 1898 [synonym], Phaularpites exiguus Buckman 1928 [synonym], Tardarpoceras tardum Buckman 1927 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height441.722.485.038.032.6
diameter498.546.5180.0106.054.7
inflation425.411.039.038.015.9
shell height1032.010.581.533.227.6
shell diameter1076.425.5206.077.071.5
shell inflation1022.97.0065.524.024.5

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 Falciferum to the top of the Kanense or 184.20000 to 181.30000 Ma

Collections (84 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian184.2 - 182.9Spain Harpoceras falciferum (169654)
Early/Lower Toarcian184.2 - 182.9Slovakia Harpoceras falciferum (218343)
Early/Lower Toarcian184.2 - 182.9Spain (Cantabria) Harpoceras falciferum (169632)
Early/Lower Toarcian184.2 - 182.9United Kingdom (England) Harpoceras falciferum (38379)
Falciferum184.2 - 182.9France (Deux-Sevrès) Harpoceras falciferum (140862 147151)
Falciferum184.2 - 182.9Spain (Cantabria) Harpoceras falciferum (222277 222281)
Falciferum184.2 - 182.9United Kingdom (Yorkshire) Harpoceras falciferoides, Harpoceras exiguum, Harpoceras falciferum (147849) Harpoceras falciferum (147846 147847 147848 147850 147859 147860 147861 147862 147863 154228)
Falciferum184.2 - 182.9Germany Harpoceras falciferum (126162 228512)
Falciferum184.2 - 182.9Spain Harpoceras falciferum (146895)
Falciferum184.2 - 182.9Hungary Harpoceras falciferum (148238 148265)
Falciferum184.2 - 182.9France (Vendée) Harpoceras falciferum (140776 140777 140779 140780 147202 147209 147210)
Falciferum184.2 - 182.9France Harpoceras falciferum (124153 124154 124155 148323 148324 148325 161637)
Falciferum184.2 - 182.9Bulgaria Harpoceras falciferum (150938 150939)
Falciferum184.2 - 182.9Morocco Harpoceras falciferum (228342 228343)
Toarcian184.2 - 174.7Morocco Harpoceras falciferum (153943)
Bifrons182.9 - 174.7France Harpoceras falciferum (124157 124158 124159 124160 124161 124162 148326 148327 148328 148331 148332 170452)
Bifrons182.9 - 174.7Spain Harpoceras falciferum (146927 169659)
Bifrons182.9 - 174.7Italy Harpoceras falciferum (147042 147043)
Bifrons182.9 - 174.7France (Vendée) Harpoceras falciferum (140781 140782 140783 140784 140785 140786 147204 147205)
Bifrons182.9 - 174.7Tunisia Harpoceras falciferum (169176 169177)
Bifrons182.9 - 174.7Spain (Cantabria) Harpoceras falciferum (222283 222284 222286 222288)
Bifrons182.9 - 174.7France (Deux-Sevrès) Harpoceras falciferum (140864 140865 140866 147152 147153 147154 147155 147156 147157)
Middle Toarcian - Late/Upper Toarcian182.9 - 174.7Morocco (Taza-Al Hoceima-Taounate) Harpoceras falciferum (234054)
Kanense182.3 - 181.3Canada (Alberta) Harpoceras falciferum (198519)