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Spinicharybdis krizi

Gastropoda - Euomphalina - Euomphalidae

Taxonomy
Spinicharybdis krizi was named by Rohr et al. (2008). Its type specimen is USNM 534454, a shell, and it is not a trace fossil. Its type locality is 2004R-1, south side of logging road, Twin Mountains area, Prince Wales Island, which is in a Ludlow carbonate wackestone in the Heceta Limestone Formation of Alaska.

Synonymy list
YearName and author
2008Spinicharybdis krizi Rohr et al. p. 605 fig. 2.1–2.9

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyEuomphalidae
subfamilySpinicharybdiinae
genusSpinicharybdis
specieskrizi

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.

Spinicharybdis krizi Rohr et al. 2008
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Diagnosis
ReferenceDiagnosis
D. M. Rohr et al. 2008Moderately high-spired, phaneromphalous gastropods, whorls round in cross section, about 15 long, hollow, non-tapering spines below midwhorl, strong growth lines above spines, loosely coiled with a few specimens uncoiling in last whorls (Fig. 2.9).

Description.—Moderately high-spired with apical angle ranging from 45° in the early whorls to about 55° in later whorls, phaneromphalous, rounded, loosely coiled whorls bearing about 15 long spines below mid-whorl; hollow spines with lightly impressed seam along leading edge; spines open at distal end, but except for youngest spine, they are not connected to the shell interior; spines project downward at about 10–15°; some spines with rearward (abapertural) curvature (Fig. 2.3); aperture circular, not thickened, slightly inclined forward; earliest preserved whorls have vertically elongated nodes (Fig. 2.1) that are replaced by strong growth lines in later whorls.
Measurements
No measurements are available
Composition: aragonitef
Composition 2: low Mg calcitef
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Locomotion: stationaryg
Life habit: epifaunalg
Diet: suspension feederg
Vision: limitedc
Created: 2004-08-14 22:20:43
Modified: 2004-08-15 00:20:43
Source: g = genus, f = family, c = class
References: Kiessling 2004, Knight et al. 1960

Age range: Ludlow or 427.40000 to 423.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Ludlow427.4 - 423.0USA (Alaska) Spinicharybdis krizi (type locality: 80381)