Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Placenticeras semiornatum

Cephalopoda - Ammonitida - Placenticeratidae

Taxonomy
Ammonites semiornatus was named by d'Orbigny (1850). It is a 3D body fossil. Its type locality is Tours (d'Orbigny collection), which is in a Santonian carbonate grainstone in France.

It was recombined as Placenticeras semiornatum by Kennedy (1984).

Sister species lacking formal opinion data
P. intercalare, P. meeki

Synonymy list
YearName and author
1850Ammonites semiornatus d'Orbigny p. 212
1984Placenticeras semiornatum Kennedy p. 44 figs. Pl 1, figs 4-6; pl 4, figs 3-5,7,8; text-figs 13B, 29D

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyHoplitoidea(Douvillé 1890)
familyPlacenticeratidae
genusPlacenticerasMeek 1876
speciessemiornatum(d'Orbigny 1850)

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.

†Placenticeras semiornatum d'Orbigny 1850
show all | hide all
Diagnosis
No diagnoses are available