PBDB Taxon

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

Yoldia rectangularis

Bivalvia - Nuculanida - Yoldiidae

Taxonomy

Yoldia rectangularis was named by Speden (1970). Its type specimen is YPM 23992, a valve (a left valve and matching external mould, incomplete ventrally), and it is a 3D body fossil.

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
1970	Yoldia rectangularis Speden p. 41 figs. Plate 3, figs. 11-14

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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	rectangularis

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 rectangularis Speden 1970

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Diagnosis

No diagnoses are available

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

Age range: Maastrichtian or 72.20000 to 66.00000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Maastrichtian	72.2 - 66.0	USA (South Dakota)	Yoldia rectangularis (88511)
Maastrichtian	72.2 - 66.0	USA (South Dakota)	Yoldia rectangularis (1320)