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Enigmaconus

Helcionelloida - Helcionellida - Yochelcionellidae

Taxonomy
Enigmaconus was named by MacKinnon (1985) [Sepkoski's age data: Cm uMid-u Sepkoski's reference number: 529].

It was assigned to Enigmaconidae by MacKinnon (1985); to Mollusca by Sepkoski (2002); and to Yochelcionellidae by Parkhaev (2002) and Bouchet et al. (2005).

Synonymy list
YearName and author
1985Enigmaconus MacKinnon pp. 72 - 73
2002Enigmaconus Parkhaev p. 36
2002Enigmaconus Sepkoski
2005Enigmaconus Bouchet et al. pp. 71, 241

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyYochelcionelloidea
familyYochelcionellidae
genusEnigmaconus

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.

G. †Enigmaconus MacKinnon 1985
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Enigmaconus parvus MacKinnon 1985
Enigmaconus pyramidalis Kouchinsky et al. 2013
Diagnosis
ReferenceDiagnosis
D.I. MacKinnon 1985Low, slightly cyrtoconic univalves with a well developed transverse plate, or pegma, that projects ventrally from the anterodorsal shell wall, thus dividing the shell interior into two cavities of markedly unequal size; posterior cavity appreciably larger than the anterior. Shell showing relatively little lateral compression; aperture elongate oval.
Measurements
No measurements are available
Composition: aragonitec
Environment: marinec
Locomotion: slow-movingf
Life habit: low-level epifaunalf
Diet: grazerf
Vision: blindf
Created: 2009-10-09 07:30:55
Modified: 2010-05-17 04:53:48
Source: f = family, c = class
Reference: Hendy et al. 2009

Age range: base of the Botomian to the top of the Boomerangian or 516.00000 to 499.00000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Botomian516.0 - 512.9Russian Federation (Siberia) E. pyramidalis (174258 174260)
Boomerangian500.5 - 499.0New Zealand (Nelson) E. parvus (7897)