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Argopecten cristobalensis

Bivalvia - Pectinida - Pectinidae

Taxonomy
Pecten (Plagioctenium) cristobalensis was named by Hertlein (1925). Its type specimen is LSJU (no number), a shell, and it is a 3D body fossil.

It was recombined as Chlamys (Argopecten) cristobalensis by Hertlein and Grant (1972); it was recombined as Argopecten cristobalensis by Moore (1984).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1925Pecten (Plagioctenium) cristobalensis Hertlein figs. pl. 3, figs. 1, 2, 5
1926Pecten (Plagioctenium) cristobalensis Jordan and Hertlein p. 439
1972Chlamys (Argopecten) cristobalensis Hertlein and Grant p. 200
1984Argopecten cristobalensis Moore p. B40 figs. Plate 13, figure 1

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
RankNameAuthor
OstreomorphiFerussac 1822
OstreioniFerussac 1822
OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderPectinida(Gray 1854)
suborderPectinidina(Adams and Adams 1858)
superfamilyPectinoideaRafinesque 1815
PectinoidaeRafinesque 1815
familyPectinidaeWilkes 1810
genusArgopectenMonterosato 1889
speciescristobalensis()

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.

Argopecten cristobalensis Hertlein 1925
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Diagnosis
ReferenceDiagnosis
L. G. Hertlein 1925Shell large, fairly thick, in several specimens with strong lines of restricted growth; valves moderately arched. Right valve ornamented by about 24 flat-topped, squarish, radiating ribs, separated by flat-bottomed, slightly narrower, inter- spaces, the whole surface crossed by well defined, wavy, concentric lines of growth ; anterior and posterior margins of valve smooth except for concentric incremental sculpture; ventral margin evenly rounded; ears unequal, the anterior ear with a large byssal notch, and ornamented by about five radiating riblets crossed by concentric lines of growth ; the posterior ear also bearing about five or six radiating riblets crossed by growth lines. Left valve slightly more convex than right and sculptured much as the latter, the anterior and posterior mar- gins with concentric lines of growth only ; ears ornamented by about eight or nine radiating riblets, the anterior ear with a slight notch. Altitude 117 mm. ; longitude 135 mm. ; diameter right valve approximately 17 mm.; apical angle of right valve approximately 100°- 110°.