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Parengonoceras roemeri

Cephalopoda - Ammonitida - Knemiceratidae

Taxonomy
Sphenodiscus roemeri was named by Cragin (1893) [DISTRIBUTION: Albian; Gulf Coastal Plain.]. It is not a trace fossil.

It was recombined as Parengonoceras roemeri by Kennedy et al. (1998).

Synonyms
Synonymy list
YearName and author
1893Sphenodiscus roemeri Cragin p. 235 figs. pl. 46, fig. 1
1940Knemiceras nodosum Scott p. 1069 figs. pl. 67, fig. 6; pl. 68, fig. 6
1940Knemiceras azlense Scott p. 1070 figs. pl. 66, figs. 5, 6, 10; pl. 68, fig. 2
1940Knemiceras trinitense Scott p. 1071 figs. pl. 66, fig. 7; pl. 68, fig. 3.
1998Parengonoceras roemeri Kennedy et al. p. 21

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyEngonoceratoideaHyatt 1903
familyKnemiceratidaeHyatt 1903
genusParengonoceras
speciesroemeri(Cragin 1893)

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.

†Parengonoceras roemeri Cragin 1893
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Invalid names: Knemiceras azlense Scott 1940 [synonym], Knemiceras nodosum Scott 1940 [synonym], Knemiceras trinitense Scott 1940 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height435.825.553.535.513.2
shell diameter468.045.3108.567.729.1
shell inflation47.304.2011.78.003.68

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: Early/Lower Albian or 113.20000 to 110.10000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Albian113.2 - 110.1USA (Texas) Knemiceras azlense, Knemiceras nodosum, Knemiceras trinitense (53020) Parengonoceras roemeri (82421)