PBDB Taxon

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

Calva (Calva)

Bivalvia - Cardiida - Veneridae

Taxonomy

Calva (Calva) was named by Popenoe (1937).

It was assigned to Calva by Popenoe (1937), Saul and Popenoe (1992).

Subtaxa

Calva (Calva) baptisia, Calva (Calva) campanae, Calva (Calva) heliaca, Calva (Calva) peninsularis, Calva (Calva) regina, Calva (Calva) varians

Species lacking formal opinion data

Calva caperata, Calva subrotunda, Calva taff

Synonymy list

Year	Name and author
1937	Calva (Calva) Popenoe
1992	Calva (Calva) Saul and Popenoe p. 110

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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

Rank	Name	Author
—	Cardioni	Ferussac 1822
—	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
genus	Calva
subgenus	Calva	Popenoe 1937

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.

Subg. †Calva (Calva) Popenoe 1937

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†Calva (Calva) baptisia Saul and Popenoe 1992

†Calva (Calva) campanae Saul and Popenoe 1992

†Calva (Calva) heliaca Saul and Popenoe 1992

†Calva (Calva) peninsularis Anderson and Hanna 1935

†Calva (Calva) regina Popenoe 1937

†Calva (Calva) varians Gabb 1864

Diagnosis

Reference	Diagnosis
L. R. Saul and W. P. Popenoe 1992	DIAGNOSIS.Species of Calva of subquadrate shape having an apparent posterior truncation and smooth exterior except for growth lines and growth checks. Hinge plate relatively broad and slightly arched with maximum flexure posterior to cardinal 3b; posterior lateral PI realtively short and high. Pallial sinus broad with steeply ascending ventral arm and nearly horizontal dorsal arm.

Measurements

No measurements are available

Composition:

aragonitef

Locomotion:

facultatively mobilef

Life habit:

infaunalf

Diet:

suspension feederf

Vision:

blindc

Created:

2007-10-08 06:38:03

Modified:

2009-08-18 20:15:30

Source: f = family, c = class

References: Kiessling 2004, Aberhan et al. 2004

Age range: base of the Cenomanian to the top of the Early/Lower Maastrichtian or 100.50000 to 66.00000 Ma

Collections (99 total)

Time interval	Ma	Country or state	Original ID and collection number
Cenomanian	100.5 - 93.9	USA (California)	Calva heliaca (219074 219086) Trigonocallista varians (167603)
Late/Upper Cretaceous	100.5 - 66.0	USA (California)	Aphrodina varians (206278 237459 237460)
Early/Lower Turonian - Middle Turonian	93.9 - 89.8	USA (California)	Calva regina (220373)
Late/Upper Turonian	93.9 - 89.8	USA (California)	Calva regina (215287 220941 238628 238629 238630 239928) Trigonocallista regina (220390 220932 220933 220940 221084)
Turonian	93.9 - 89.8	USA (California)	Aphrodina varians (44217) Calva regina (62347 86785 215285 215618 219050 220298 220299 220340 222073 222092 222093 222094 222096 222097 222115 238635) Trigonocallista regina (194022)
Coniacian	89.8 - 85.7	USA (California)	Aphrodina varians (44232)
Santonian	85.7 - 83.6	USA (California)	Aphrodina varians (44279)
Campanian	83.6 - 72.2	USA (California)	Chione varians (158389)
Late/Upper Campanian	83.6 - 72.2	USA (California)	Calva campanae (219077) Calva peninsularis (86872) Calva varians (1516 1519 1522 1524 1526 1527 1528 1530 1531 1532 1534 1535 1537 1538 1539 1540 1541 1543 1546 1549 1551 1552)
Middle Campanian	83.6 - 72.2	USA (California)	Calva campanae (185174 219069 219078) Venus varians (72056)
Late/Upper Campanian - Early/Lower Maastrichtian	83.6 - 66.0	USA (California)	Calva peninsularis (176399 219083) Calva varians (1529 1533)
Late/Upper Campanian - Early/Lower Maastrichtian	83.6 - 66.0	Mexico (Baja California)	Calva peninsularis (190527)
Early/Lower Maastrichtian	72.2 - 66.0	USA (California)	Calva peninsularis (86821 224893) Calva varians (219070)
Early/Lower Maastrichtian	72.2 - 66.0	Mexico (Baja California)	Calva peninsularis (180431)
Late/Upper Maastrichtian	72.2 - 66.0	USA (California)	Calva baptisia (218669) Calva varians (214073 219052 219054 219087) Corbis peninsularis (219051)
Maastrichtian	72.2 - 66.0	Mexico	Calva peninsularis (1372)
Maastrichtian	72.2 - 66.0	USA (California)	Calva varians (176930 185457 185491 185495 185622 185623 185625 185635 185701 185703 185705 185706) Corbis peninsularis (83790 83792 83793)
Maastrichtian	72.2 - 66.0	Mexico (Baja California)	Aphrodina major (158099)