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Psiloceras (Caloceras) johnstoni

Cephalopoda - Ammonitida - Psiloceratidae

Taxonomy
Ammonites johnstoni was named by Sowerby (1824).

It was recombined as Psiloceras (Caloceras) johnstoni by Rakús (1999).

Synonymy list
YearName and author
1824Ammonites johnstoni Sowerby
1999Psiloceras (Caloceras) johnstoni Rakús p. 338 figs. Pl 4, fig 9; text-fig 10

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
subclassAmmonoidea()
RankNameAuthor
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyPsiloceratoidea(Hyatt 1867)
familyPsiloceratidaeHyatt 1867
subfamilyPsiloceratinaeHyatt 1867
genusPsiloceras
subgenusCaloceras
speciesjohnstoni(Sowerby 1824)

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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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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: Hettangian or 201.30000 to 199.30000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Jurassic201.4 - 174.7United Kingdom (England) Ammonites johnstoni (84121)
Hettangian201.3 - 199.3United Kingdom (Yorkshire) Caloceras johnstoni (219462)
Hettangian201.3 - 199.3Canada (Yukon) Psiloceras johnstoni (34181 34182)
Early/Lower Hettangian201.3 - 196.5Chile (Antofagasta) Caloceras johnstoni (210270)
Early/Lower Hettangian201.3 - 196.5United Kingdom (England) Psiloceras johnstoni (29230)
Early/Lower Hettangian201.3 - 196.5France Psiloceras johnstoni (39215)
Liasicus201.3 - 196.5United Kingdom (England) Caloceras johnstoni (78503)
Planorbis201.3 - 196.5France Psiloceras johnstoni (39382 39387)
Planorbis201.3 - 196.5Austria Psiloceras johnstoni (173598)
Planorbis201.3 - 196.5United Kingdom (England) Caloceras johnstoni (78502)
Early/Lower Hettangian - Middle Jurassic201.3 - 161.5United Kingdom (England) Psiloceras johnstoni (29229)