PBDB Taxon

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

Pitar quadratus

Bivalvia - Cardiida - Veneridae

Taxonomy

Tapes quadrata was named by Gabb (1864).

It was recombined as Pitar quadratus by Stewart (1930).

Sister species lacking formal opinion data

P. aldrichi, P. californiana, P. cosanguineus, P. matheroni, P. megacostata, P. nuttalliopsis, P. obliquata, P. poulsoni, P. protena, P. ripleyanus, P. sciena, P. sculpturata, P. semeliformis, P. soledadensis, P. stantoni, P. subnasuta, P. subpellucidum, P. swedani, P. thompsoni, P. turneri, P. turneri, P. kavranensis, P. striata

Synonymy list

Year	Name and author
1864	Tapes quadrata Gabb p. 169 figs. PL 30, Fig. 249
1930	Pitar quadratus Stewart p. 234 figs. Plate 7, fig. 9

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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
—	Cardioni	Ferussac 1822

Rank	Name	Author
—	Cardiidia	Ferussac 1822
—	Cardiata	Ferussac 1822
superorder	Cardiiformii	Ferussac 1822
order	Cardiida	Ferussac 1822
suborder	Cardiidina	Ferussac 1822
—	Veneroidei	(Gray 1854)
—	Veneroitei	Gray 1854
superfamily	Veneroidea	(Rafinesque 1815)
family	Veneridae	Rafinesque 1815
subfamily	Callocardiinae	(Dall 1895)
genus	Pitar	Römer 1857
species	quadratus	()

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.

†Pitar quadratus Gabb 1864

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragonitef

Locomotion:

facultatively mobileg

Life habit:

infaunalg

Diet:

suspension feederg

Vision:

blindc

Created:

2009-09-04 16:38:09

Modified:

2009-09-04 18:38:09

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

References: Kiessling 2004, Aberhan et al. 2004, Hendy et al. 2009

Age range: base of the Selandian to the top of the Bartonian or 61.60000 to 38.00000 Ma

Collections (15 total)

Time interval	Ma	Country or state	Original ID and collection number
Paleocene	66.0 - 56.0	USA (California)	Tapes quadrata (190778 190783 190795)
Selandian	61.6 - 59.2	USA (California)	Tapes quadrata (184016)
Thanetian	59.2 - 56.0	USA (California)	Pitar quadratus (52611 52612 52613 52618)
Ypresian	56.0 - 47.8	USA (California)	Pitar quadratus (52614)
Eocene	56.0 - 33.9	USA (California)	Pitar quadratus (194189)
Middle Eocene	47.8 - 37.71	USA (California)	Pitar quadratus (194185 194191)
Bartonian	41.3 - 38.0	USA (Washington)	Pitar quadratus (52204 52205 52206)