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Hildoceras

Cephalopoda - Ammonoida - Hildoceratidae

Taxonomy
Hildoceras was named as a genus. It is not extant. It is the type genus of Hildoceratinae.

It was reranked as Harpoceras (Hildoceras) by Hug (1898).

It was assigned to Harpoceras by Hug (1898); to Ammonoidea by Sepkoski (2002); and to Hildoceratinae by Howarth (2013), Benzaggagh et al. (2022).

Synonyms
Synonymy list
YearName and author
1886Goniohildoceras Seguenza
1898Harpoceras (Hildoceras) Hug
1967Urkutites Géczy
2002Hildoceras Sepkoski
2008Urkutites Géczy et al.
2013Hildoceras Howarth p. 78
2022Hildoceras Benzaggagh et al. p. 16

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassColeoideaBather 1888
orderAmmonoida(Haeckel 1866)
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyHildoceratoidea(Hyatt 1867)
familyHildoceratidaeHyatt 1867
subfamilyHildoceratinaeHyatt 1867
genusHildoceras

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.

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Subg. †Hildoceras (Lillia) Bayle 1878
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†Hildoceras ameuri Rulleau et al. 2001
†Hildoceras apertum Gabilly 1976
†Hildoceras bastiani Fucini 1905
†Hildoceras bifrons Bruguiere 1792
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Invalid names: Ammonites hildensis Young and Bird 1822 [synonym], Ammonites walcotii Sowerby 1815 [synonym], Hildoceras angustisiphonatum Prinz 1904 [synonym]
†Hildoceras caterinii Merla 1933
†Hildoceras crassa Mitzopoulos 1930
†Hildoceras crassum Mitzopoulos 1930
†Hildoceras graecum Renz 1912
†Hildoceras laticosta Bellini 1900
†Hildoceras lusitanicum Meister 1913
†Hildoceras semipolitum Buckman 1902
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Invalid names: Hildoceras semicosta Buckman 1926 [synonym]
†Hildoceras snoussi Elmi 1977
†Hildoceras sublevisoni Fucini 1919
†Hildoceras tethysi Geczy 1967
Invalid names: Goniohildoceras Seguenza 1886 [synonym], Urkutites Géczy 1967 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height913.89.8022.113.05.30
diameter962.333.0106.064.129.4
inflation927.815.550.525.214.2
shell height3620.410.044.520.39.59
shell diameter3660.528.0156.851.938.8
shell inflation3624.76.6086.519.422.0

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 Pliensbachian to the top of the Middle Toarcian or 192.90000 to 180.40000 Ma

Collections (393 total)


Time interval Ma Country or state Original ID and collection number
Pliensbachian192.9 - 184.2Austria H. sp. (218330)
Early/Lower Toarcian184.2 - 182.9Serbia and Montenegro H. bifrons (73353)
Early/Lower Toarcian184.2 - 182.9Germany (Bavaria) H. serpentinum (51273)
Early/Lower Toarcian184.2 - 182.9Slovakia H. levisoni, H. bifrons (218343)
Early/Lower Toarcian184.2 - 182.9Spain (Granda) H. angustisiphonatum, H. semipolitum (201098) H. apertum (201089 201090 201091 201093 201096) H. crassum, H. apertum, H. lusitanicum (201083 201084 201085 201086 201087) H. crassum, H. tethysi, H. apertum (201088) H. semipolitum (201100 201103 201105) H. sublevisoni (201082)
Early/Lower Toarcian184.2 - 182.9Japan (Yamaguchi) H. sp. (38203 38212)
Falciferum184.2 - 182.9Italy H. sublevisoni (145322) Urkutites sp. (145309 145310)
Falciferum184.2 - 182.9Spain H. laticosta (126467)
Toarcian184.2 - 174.7Germany (Bavaria) H. sp. (49699)
Toarcian184.2 - 174.7France H. bifrons (210794) H. semipolitum (210816) H. sp. (210818 210819 210854) H. sp., H. bifrons (210813 210814 210828 210829 210830 210831) H. sp., H. semipolitum (210793 210801 210815 210832 210833 210834) H. sp., H. semipolitum, H. bifrons (210807 210808)
Toarcian184.2 - 174.7Tunisia H. sp. (170603)
Middle Toarcian182.9 - 180.4Ukraine (Transcarpathian) H. crassum, H. sublevisoni, H. lusitanicum (197053) H. sp. (197225)
Middle Toarcian182.9 - 180.4United Kingdom (Gloucestershire) H. sp. (204110 204112 204113)
Middle Toarcian182.9 - 180.4Spain (Granda) H. semipolitum (201106 201107)
Middle Toarcian182.9 - 180.4Spain (Murcia) H. apertum (201430 201431 201433) H. apertum, H. lusitanicum, H. bifrons (201459 201460) H. bifrons (201461 201462) H. crassum, H. apertum (201432) H. crassum, H. apertum, H. lusitanicum (201456 201457 201458) H. crassum, H. caterinii, H. sublevisoni, H. lusitanicum (201448) H. crassum, H. lusitanicum (201427 201428 201454 201455) H. crassum, H. sublevisoni, H. lusitanicum (201449 201450 201451 201452 201453) H. lusitanicum (201426) H. semipolitum (201464 201465 201466) H. sublevisoni (201423 201446) H. sublevisoni, H. lusitanicum (201424 201425 201447) H. tethysi, H. apertum (201434)
Bifrons182.9 - 174.7Morocco H. bifrons (228353) H. lusitanicum (228349 228352) H. semipolitum (228354) H. sublevisoni (228350) H. sublevisoni, H. apertum (228351)
Bifrons182.9 - 174.7France (Deux-Sevrès) H. apertum (140867 147158 147159) H. bifrons (140868 147160) H. caterinii, H. sublevisoni (140864) H. crassum, H. lusitanicum (140866 147157) H. crassum, H. tethysi (140865 147155 147156) H. semipolitum, H. ameuri, H. bifrons (147161) H. sublevisoni (147152 147153 147154)
Bifrons182.9 - 174.7France H. angustisiphonatum (148790 148794) H. angustisiphonatum, H. bifrons (148788 148791) H. angustisiphonatum, H. semipolitum (170431) H. apertum, H. bifrons (148785 161649) H. apertum, H. lusitanicum (148783) H. bifrons (124165 124166 124167 124168 148784 148786 148787 148789 148792 148793 161645 161646 161652 170432 170471) H. caterinii, H. sublevisoni (148327) H. crassum (148332) H. crassum, H. apertum, H. lusitanicum (148780) H. crassum, H. tethysi (148331) H. graecum (170430) H. lusitanicum (148782 161644 170470) H. lusitanicum, H. bifrons (148781) H. semicosta (170441) H. semipolitum (148795 161653 161654 170436 170438) H. semipolitum, H. bifrons (161655) H. sp. (148114) H. spp. (161660) H. spp., H. lusitanicum (161639) H. sublevisoni (124156 124158 124159 124160 148326 148328 148329 170468) H. tethysi (148330 148779)
Bifrons182.9 - 174.7Bulgaria H. bifrons (150947) H. laticosta (150944) H. lusitanicum (150945) H. semipolitum (150946)
Bifrons182.9 - 174.7Spain H. apertum (119601 119602 146930 169667) H. apertum, H. bifrons (169670) H. apertum, H. lusitanicum (169666) H. apertum, H. lusitanicum, H. bifrons (146929) H. bifrons (126474 126475 126476 126478 126479 126480 126481 126484 146931 146932 146933 146934 146935 146938 169668 169671 169673 171084) H. caterinii, H. sublevisoni (119595) H. crassum, H. lusitanicum (119596 146928) H. crassum, H. sublevisoni, H. tethysi (146927) H. laticosta (126470 126533) H. lusitanicum (119597 119600 126472 126473 169662 169663 169664 169665) H. lusitanicum, H. laticosta (126471) H. semipolitum (126485 126487 126489 146940 146941 146943 146945 169675) H. semipolitum, H. bifrons (126486 169674) H. sublevisoni (119594 146923 146924 146926 169657) H. sublevisoni, H. tethysi (169658 169660 169661)
Bifrons182.9 - 174.7United Kingdom (Yorkshire) H. bifrons (147878 147880 147881 147882 147883 147884 147886 147887 147888 147906 147907 147909 147910 147911 147912 147913 147914 147915 147916 147917 147918 147919 147921 147924 147925) H. semipolitum, H. bifrons (147890 147923) H. sublevisoni (147868 147869 147871 147873 147876 147877 147894 147899 147901)
Bifrons182.9 - 174.7Germany H. lusitanicum (228514)
Bifrons182.9 - 174.7Luxembourg H. bifrons (141381) H. semipolitum, H. bifrons (141382)
Bifrons182.9 - 174.7Tunisia H. crassum, H. tethysi (169176 169177) H. lusitanicum (170599 170613) H. sp. (169179 170597) H. sublevisoni (169174 170565 170566 170567 170568 170569 170592 170598) H. sublevisoni, H. lusitanicum, H. graecum (170612) H. tethysi (169175)
Bifrons182.9 - 174.7France (Vendée) H. caterinii, H. sublevisoni (140781 140783) H. crassum, H. lusitanicum (140787) H. crassum, H. tethysi (147205) H. lusitanicum (140786) H. sp., H. crassum, H. tethysi (140785) H. sublevisoni (140782 147203 147204) H. tethysi (140784)
Bifrons182.9 - 174.7Spain (Cantabria) H. apertum (222299 222301) H. apertum, H. bifrons (222302 222303) H. bifrons (222304) H. crassum, H. sublevisoni (222290) H. lusitanicum (222291 222292 222293 222294 222295 222296 222297 222298 222300) H. sublevisoni (222283 222284 222285 222286 222287 222288 222289)
Bifrons182.9 - 174.7Hungary H. angustisiphonatum (108045 108067 108083) H. angustisiphonatum, H. semipolitum (108066 108084) H. apertum (108087 108464 108465) H. apertum, H. bifrons (147246) H. apertum, H. lusitanicum (147247 147248 147251) H. apertum, Urkutites sp., H. bifrons (108467) H. bifrons (108047 108085 108466 147241 147243) H. caterinii, H. lusitanicum (108091 108460 108462) H. caterinii, H. sublevisoni, H. lusitanicum (108054 108459) H. crassum (108051) H. crassum, H. lusitanicum (147254) H. lusitanicum (108073 108202 108461 147249 147253 147261 148242) H. semipolitum (147237 147240) H. semipolitum, H. bifrons (108468) H. sublevisoni (108050 108094 108204 108205 147264 148231 148243 148255 148256) H. sublevisoni, H. apertum, H. lusitanicum (108092) H. sublevisoni, H. lusitanicum (147256 147257) H. sublevisoni, H. tethysi, H. lusitanicum (147262) H. tethysi (108089 108090 108203)
Bifrons182.9 - 174.7Italy H. acamanicum, H. sp., H. caterinii, H. sublevisoni (147027) H. acarnanicum, H. caterinii, H. sublevisoni (147028) H. acarnanicum, H. sp., H. caterinii, H. sublevisoni (147029) H. acarnanicum, H. sp., H. sublevisoni (147032) H. acarnanicum, H. sublevisoni (147030 147031) H. angustisiphonatum, H. apertum, H. bifrons (147039) H. caterinii, H. sublevisoni (145312 145323) H. lusitanicum, H. bifrons (147038) H. sp. (147036) H. sp., H. angustisiphonatum, H. apertum, H. bifrons (147040) H. sp., H. angustisiphonatum, H. apertum, H. lusitanicum, H. bifrons (147037) H. sp., H. angustisiphonatum, H. semipolitum (147041 147043) H. sp., H. caterinii, H. sublevisoni (147026) H. sp., H. lusitanicum (147033 147035) H. sp., H. n. sp. (147034) H. sp., H. semipolitum (147042) H. sublevisoni (145311 145324)
Bifrons182.9 - 174.7Romania H. bifrons (221057)
Levesquei182.9 - 174.7Germany H. sp. (59521 59522)
Middle Toarcian - Late/Upper Toarcian182.9 - 174.7Morocco (Taza-Al Hoceima-Taounate) H. semipolitum, H. crassum, H. sublevisoni, H. tethysi, H. apertum, H. bifrons, H. snoussi (234054)
Variabilis182.9 - 174.7France H. semipolitum (148796 148797 148798 148799 161662)
Variabilis182.9 - 174.7France (Deux-Sevrès) H. semipolitum, H. bifrons (140898 147162)
Variabilis182.9 - 174.7Spain H. semipolitum (146949 169678)