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Parapachydiscus williamsoni

Cephalopoda - Ammonitida - Pachydiscidae

Taxonomy
Parapachydiscus williamsoni was named by Maury (1930). It is a cast. Its type locality is Right bank of Rio Gramame (Sphenodiscus zone), which is in a Maastrichtian carbonate limestone in the Gramame Formation of Brazil.

Sister species lacking formal opinion data
P. gollevillense

Synonymy list
YearName and author
1930Parapachydiscus williamsoni Maury p. 152 figs. pl. 20, figs. 4, 5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyDesmoceratoidea(Zittel 1895)
familyPachydiscidaeSpath 1922
genusParapachydiscusZittel 1884
specieswilliamsoni

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 2004, Kiessling 2003

Age range: Maastrichtian or 72.20000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.2 - 66.0Brazil (Paraíba) Parapachydiscus williamsoni (type locality: 88070)