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Polyplectus

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy
Polyplectus was named as a genus. It is not extant.

It was reranked as Harpoceras (Polyplectus) by Haas (1913).

It was assigned to Harpoceras by Haas (1913); to Ammonoidea by Sepkoski (2002); and to Harpoceratinae by Pallini et al. (2004), Howarth (2013) and Benzaggagh et al. (2022).

Synonyms
Synonymy list
YearName and author
1913Harpoceras (Polyplectus) Haas
1973Micropolyplectus Guex
2002Polyplectus Sepkoski
2004Polyplectus Pallini et al. p. 7
2013Polyplectus Howarth p. 76
2022Polyplectus Benzaggagh et al. p. 10

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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
genusPolyplectus

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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†Polyplectus discoides Zittel 1831
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Invalid names: Oxynoticeras meunieri Monestier 1921 [synonym]
Invalid names: Micropolyplectus Guex 1973 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height528.917.050.025.014.9
diameter558.438.393.048.026.6
inflation58.254.0019.09.006.31
shell height241.039.842.241.01.70
shell diameter273.071.274.873.02.55
shell inflation27.216.508.007.251.06

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 Hauterivian or 182.70000 to 129.40000 Ma

Collections (115 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0Spain (Granda) P. discoides (201064 201076 201079 201080 201081 201082)
Early/Lower Toarcian183.0 - 182.0Spain (Murcia) P. discoides (201421)
Falciferum183.0 - 182.0Morocco P. pluricostatum (228344) P. sp., P. pluricostatum (228345)
Falciferum183.0 - 182.0Italy P. pluricostatus (145310 147074) P. sp. (145318)
Falciferum183.0 - 182.0France (Deux-Sevrès) P. pluricostatus (140862)
Falciferum183.0 - 182.0Spain P. pluricostatus (114367 114369 146889)
Falciferum183.0 - 182.0Hungary P. pluricostatus (148248 148259 148268)
Early/Lower Toarcian - Middle Toarcian183.0 - 175.6Canada (Yukon) P. sp. (197430)
Toarcian182.7 - 174.1Canada (British Columbia) P. sp. (37557)
Toarcian182.7 - 174.1France P. discoides (210796 210798 210820 210861 210864 210877 210878 210880 210881)
Bifrons182.0 - 175.6Italy P. discoides (147041 147043) P. pluricostatus (145312 147028 147029 147030 147034 147036 147039)
Bifrons182.0 - 175.6Hungary P. pluricostatus (108046 108053 108068 108084 108087 108101 108102 108201 108205 108459 108460 108461 108462 108465 147243 147256 148242)
Bifrons182.0 - 175.6Italy (Sicily) P. pluricostatus, P. appenninicus (151230)
Levesquei182.0 - 175.6France P. discoides (148812)
Levesquei182.0 - 175.6Germany P. discoides (59423)
Levesquei182.0 - 175.6Spain P. discoides (147091 147095 147096 147097 147100)
Levesquei182.0 - 175.6Hungary P. pluricostatus (146436)
Levesquei182.0 - 175.6France (Deux-Sevrès) P. discoides (140875)
Middle Toarcian182.0 - 175.6Tunisia P. pluricostatus (170601)
Middle Toarcian182.0 - 175.6Canada (British Columbia) P. discoides (55779 55780 56339 56340 56343 56344) P. sp. (55795 56348)
Middle Toarcian182.0 - 175.6United Kingdom (Gloucestershire) P. subplanatus (204111)
Middle Toarcian - Late/Upper Toarcian182.0 - 175.6Morocco (Taza-Al Hoceima-Taounate) P. discoides, P. appenninicus (234054)
Middle Toarcian - Late/Upper Toarcian182.0 - 175.6Canada (British Columbia) P. discoides (56345) P. sp. (55792 56350)
Variabilis182.0 - 175.6France P. pluricostatus (161665)
Variabilis182.0 - 175.6Luxembourg P. discoides (141384)
Variabilis182.0 - 175.6Spain P. discoides (126520 126521 131824)
Variabilis182.0 - 175.6Hungary P. pluricostatus (108469 108471)
Late/Upper Toarcian180.1 - 175.6Spain (Granada) P. discoides (201294 201298 201300 201335 201338)
Late/Upper Toarcian180.1 - 175.6Hungary P. discoides (108574 108575)
Late/Upper Toarcian180.1 - 175.6Spain P. discoides (73289 147129)
Late/Upper Toarcian180.1 - 175.6Canada (British Columbia) P. discoides (56341 56342 56347) P. sp. (56349)
Late/Upper Toarcian180.1 - 175.6France P. discoides (161668 161670 161671)
Thouarsense180.1 - 175.6Spain P. discoides (146976 146977 146979 146980 146981 147086 147088 147089)
Thouarsense180.1 - 175.6Bulgaria P. discoides (151010)
Thouarsense180.1 - 175.6Hungary P. discoides (108568 108678)
Hauterivian132.9 - 129.4France P. quadrifidus (96668)