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

Palaeozygopleura difficile

Gastropoda - Murchisoniina - Palaeozygopleuridae

Taxonomy
Loxonema difficile was named by Sardeson (1902) [?Loxonema sp. Keyes 1894 pl. 55 f. 1 (ref. # 16087)]. It is a 3D body fossil.

It was recombined as Palaeozygopleura difficile by Rollins (1975).

Synonymy list
YearName and author
1902Loxonema difficile Sardeson p. 304 figs. pl. 17 f. 3-4
1975Palaeozygopleura difficile Rollins pp. 31 - 32 fig. 11.E

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassOrthogastropoda
orderMurchisoniina
superfamilyLoxonematoidea(Koken 1889)
familyPalaeozygopleuridae
genusPalaeozygopleura
speciesdifficile()

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.

†Palaeozygopleura difficile Sardeson 1902
show all | hide all
Diagnosis
ReferenceDiagnosis
H. B. Rollins 1975Very large, high spired species with characteristically bulbous whorl profile; whorl periphery below mid-whorl and bluntly rounded; upper whorl surface markedly concave, in sharp contrast to convex outer whorl surface; sutures very shallow; nuclear whorls unknown; aperture distinctly ovate with slightly thickened columellar lip; growth lines gently prosocline on upper whorl surface, nearly orthocline across whorl periphery and sharply opisthocine on outer whorl surface, indicating a wide shallow sinus near mid-whorl; ornament consisting of numerous rather fine collabral threads, nearly obsolete immediately below suture; base gently rounded and anomphalous.
Measurements
No measurements are available
Composition: aragoniteo
Locomotion: facultatively mobilesuperf
Life habit: epifaunalsuperf
Diet: suspension feedersuperf
Vision: limitedo
Created: 2009-09-21 10:39:28
Modified: 2009-09-21 12:39:28
Source: superf = superfamily, o = order
Reference: Bambach et al. 2007

Age range: Kinderhookian or 358.90000 to 352.00000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Kinderhookian358.9 - 352.0USA (Iowa) Palaeozygopleura difficile (49823 49824 49825)