PBDB Taxon

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

Yoldia duprei

Bivalvia - Nuculanida - Yoldiidae

Taxonomy

Yoldia duprei was named by Weaver and Van Winkle Palmer (1922). Its type specimen is UW (unknown number), a shell, and it is a 3D body fossil. Its type locality is UW 329, which is in a Bartonian marine horizon in the Cowlitz Formation of Washington.

Sister species lacking formal opinion data

Y. breweri, Y. clallamensis, Y. emersoni, Y. frater, Y. knoxensis, Y. leurovata, Y. longa, Y. multiconcentrica, Y. oblongoides, Y. palachei, Y. praeposneri, Y. septariana, Y. sobrina, Y. soror, Y. subacuta, Y. franciscoi, Y. siliqua, Y. caudata, Y. kovatschensis, Y. posneri

Synonymy list

Year	Name and author
1922	Yoldia duprei Weaver and Van Winkle Palmer p. 7 figs. pl. 10, figs. 2, 7

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

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia

Rank	Name	Author
—	Eubivalvia
subclass	Protobranchia	(Pelseneer 1889)
superorder	Nuculaniformii	Carter et al. 2000
order	Nuculanida	(Carter et al. 2000)
superfamily	Nuculanoidea	Adams and Adams 1858
family	Yoldiidae	Habe 1977
genus	Yoldia	Möller 1842
species	duprei

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.

†Yoldia duprei Weaver and Van Winkle Palmer 1922

show all | hide all

Diagnosis

Reference	Diagnosis
C. E. Weaver and K. Van Winkle Palmer 1922	Shell small, plump, and subelongate in outline; inequilateral, beaks situated not quite a third of the distance from the anterior end; ventral and dorsal margins nearly parallel ; anterior dorsal margin sloping at about an angle of 10 from the dorsal margin, rounded below into the ventral margin which is only slightly rounded, posterior end extends upward at about an angle of 40 with the ventral margin, posterior terminating at the dorsal margin in a point; posterior dorsal end concave; lunule faintly developed; escutcheon more deeply impressed; surface smooth except for the concentric growth lines which are fine and delicate; shell with a beautiful polish; outline of the teeth seen tnrough the shell in the cardinal region.

Measurements

No measurements are available

Composition:

aragonitef

Adult length:

10 to < 100f

Adult width:

1.0 to < 10f

Adult height:

1.0 to < 10f

Thickness:

thinf

Folds:

nonef

Ribbing:

minorf

Spines:

nonef

Internal reinforcement:

nonef

Ontogeny:

accretionf

Environment:

inner shelf, outer shelf, oceanicf

Locomotion:

facultatively mobileg

Life habit:

infaunalg

Diet:

deposit feederg

Vision:

blindc

Created:

2009-09-09 13:24:31

Modified:

2009-09-09 15:24:41

Source: g = genus, f = family, c = class

References: Sanchez Roig 1926, Mikkelsen and Bieler 2008, Aberhan et al. 2004

Age range: Bartonian or 41.03000 to 37.71000 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Bartonian	41.03 - 37.71	USA (Washington)	Yoldia duprei (52204 52206 type locality: 201124)