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Crepidula unguiformis

Gastropoda - Neotaenioglossa - Calyptraeidae

Taxonomy
Crepidula unguiformis was named by Lamarck (1822).

It was recombined as Crepidula (Janacus) unguiformis by Da Silva (1993).

Sister species lacking formal opinion data
C. gaultiana, C. nidatoriensis, C. radiata, C. stillwaterensis

Synonymy list
YearName and author
1822Crepidula unguiformis Lamarck p. 25
1993Crepidula (Janacus) unguiformis Da Silva p. 163 figs. pl. 4 f. 1-14
2015Crepidula unguiformis Brunetti and Vecchi pp. 74 - 76 figs. pl. 4 f. a-b

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassCaenogastropoda(Cox 1959)
orderNeotaenioglossaHaller 1882
suborderPtenoglossa(Gray 1853)
superfamilyCalyptraeoideaLamarck 1809
familyCalyptraeidaeLamarck 1809
genusCrepidulaLamarck 1799
speciesunguiformisLamarck 1822

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.

†Crepidula unguiformis Lamarck 1822
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Diagnosis
ReferenceDiagnosis
M. M. Brunetti and G. Vecchi 2015Conchiglia sottile e fragile, leggermente concava, a contorno sub-ellissoidale. Vertice situato sul margine posteriore, rivolto a destra. Margine sinistro arcuato, margine destro sub-rettilineo, margine anteriore arrotondato. Superficie esterna concava, liscia, con numerose, fitte e sottili linee di accrescimento, per lo più visibili solo alla lente. Faccia interna convessa, liscia, lucida, provvista di un setto (septum) sottile, convesso, subtriangolare, lamellare, il cui bordo presenta una forte e breve concavità sul lato sinistro, convesso al centro e leggermente concavo sul lato destro. Sul setto si notano sottili linee di accrescimento. Colore nocciola chiaro ma con toni di avorio sul lato interno, il setto è quasi biancastro con sfumature azzurrine. Alla superficie esterna è attaccato un frammento di Serpula sp.
Measurements
No measurements are available
Composition: aragonitec
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Thickness: thing
Folds: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Locomotion: facultatively mobileg
Attached: yesg
Life habit: epifaunalg
Diet: suspension feederg
Vision: limitedc
Created: 2009-03-16 10:24:15
Modified: 2009-09-18 11:27:32
Source: g = genus, c = class
References: Abbott and Dance 1986, Kiessling 2004

Age range: base of the Chattian to the top of the Calabrian or 28.10000 to 0.77400 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Chattian28.1 - 23.03New Zealand (South Otago) Crepidula unguiformis (45653)
Middle Miocene15.97 - 11.608Australia (Victoria) Crepidula unguiformis (72210)
Zanclean5.333 - 3.6Italy Crepidula unguiformis (71156 178810)
Zanclean5.333 - 3.6Spain (Huelva) Crepidula unguiformis (71916)
Piacenzian3.6 - 2.588Italy Crepidula unguiformis (71086 74929)
Piacenzian3.6 - 2.588Italy (Emilia-Romagna) Crepidula unguiformis (178117)
Gelasian2.588 - 1.806Italy Crepidula unguiformis (178931)
Gelasian2.588 - 1.806Italy (Parma) Crepidula unguiformis (178916 178917 178918)
Calabrian1.8 - 0.774Italy Crepidula unguiformis (178955)