PBDB Taxon

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

Protocardia subquadrata

Bivalvia - Cardiida - Cardiidae

Taxonomy

Cardium subquadratum was named by Evans and Shumard (1857). It is a 3D body fossil.

It was recombined as Protocardia subquadrata by Warren (1934).

Sister species lacking formal opinion data

P. africana, P. barneyi, P. beiha, P. besairiei, P. bipi, P. contusa, P. hillanum, P. lycetti, P. moshuiwanensis, P. olea, P. oxynoti, P. parahillana, P. pertenuis, P. phillipiana, P. rahmuensis, P. regulare, P. schucherti, P. shehuensis, P. spillmani, P. subhillanum, P. texana, P. tosensis, P. amanoi, P. goradongarensis, P. lycetti, P. peraltaensis, P. phillipiana

Synonymy list

Year	Name and author
1857	Cardium subquadratum Evans and Shumard p. 39
1934	Protocardia subquadrata Warren p. 89

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
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Heteroconchia	(Gray 1854)
—	Cardiomorphi	Ferussac 1822

Rank	Name	Author
—	Cardioni	Ferussac 1822
—	Cardiidia	Ferussac 1822
—	Cardiata	Ferussac 1822
superorder	Cardiiformii	Ferussac 1822
order	Cardiida	Ferussac 1822
suborder	Cardiidina	Ferussac 1822
—	Cardioidei	Ferussac 1822
superfamily	Cardioidea	(Lamarck 1809)
family	Cardiidae	Lamarck 1809
subfamily	Protocardiinae	Reuss 1846
genus	Protocardia	(Beyrich 1845)
species	subquadrata	(Evans and Shumard 1857)

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.

†Protocardia subquadrata Evans and Shumard 1857

show all | hide all

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragonitec

Locomotion:

facultatively mobilef

Life habit:

infaunalf

Diet:

suspension feederf

Vision:

blindc

Created:

2009-07-04 09:31:14

Modified:

2009-08-17 22:21:59

Source: f = family, c = class

References: Todd 2001, Aberhan et al. 2004

Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (10 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Campanian	83.6 - 72.2	Canada (Alberta)	Protocardia subquadrata (82647)
Late/Upper Campanian	83.6 - 72.2	Canada (Saskatchewan)	Protocardia subquadrata (87441)
Late/Upper Campanian	83.6 - 72.2	Canada (Alberta)	Protocardia subquadrata (82638)
Early/Lower Maastrichtian	72.2 - 66.0	Canada (Alberta)	Protocardia subquadrata (82644 82645)
Late/Upper Maastrichtian	72.2 - 66.0	Canada (Alberta)	Protocardia subquadrata (82643)
Late/Upper Maastrichtian	72.2 - 66.0	USA (South Dakota)	Protocardia subquadrata (88510 88511)
Maastrichtian	72.2 - 66.0	USA (South Dakota)	Protocardia subquadrata (1320)
Maastrichtian	72.2 - 66.0	USA (North Dakota)	Protocardia subquadrata (1339)