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Nayadina (Exputens)

Bivalvia - Ostreida - Malleidae

Taxonomy
Exputens was named by Clark (1934) [Sepkoski's age data: T Eo-l T Eo-u Sepkoski's reference number: 700].

It was reranked as Nayadina (Exputens) by Moore (1983), Squires (1984), Squires (1990), Squires and Demetrion (1992).

It was assigned to Pteriidae by Clark (1934); to Nayadina by Moore (1983), Squires (1984), Squires (1990), Squires and Demetrion (1992); and to Pterioida by Sepkoski (2002).

Subtaxa
Nayadina (Exputens) batequensis, Nayadina (Exputens) llajasensis (syn. Exputens alexi), Nayadina (Exputens) ocalensis
Species lacking formal opinion data
Exputens bostrychodes, Nayadina belbekensis, Nayadina gaudri
Entered
by J. Sepkoski on 2003-01-23; modified by A. Hendy on 2020-06-24

Synonymy list
YearName and author
1934Exputens Clark p. 270
1983Nayadina (Exputens) Moore p. A86 figs. Plate 26, figures 8, 9
1984Nayadina (Exputens) Squires p. 43
1990Nayadina (Exputens) Squires pp. 307 - 308
1992Nayadina (Exputens) Squires and Demetrion p. 37
2002Exputens Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
RankNameAuthor
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
orderOstreida(Fërussac 1822)
superfamilyPterioideaGray 1847
familyMalleidaeLamarck 1819
genusNayadinaMunier-Chalmas 1864
subgenusExputens()

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. †Nayadina (Exputens) Clark 1934
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Invalid names: Exputens alexi Clark 1934 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calciteo
Environment: marine, brackisho
Locomotion: stationarysuperf
Attached: yessuperf
Epibiont: yessuperf
Life habit: epifaunalsuperf
Diet: suspension feedersuperf
Vision: blindc
Created: 2009-09-09 13:52:56
Modified: 2009-09-09 15:53:09
Source: superf = superfamily, o = order, c = class
References: Aberhan et al. 2004, Kiessling 2004, Sanchez Roig 1926

Age range: base of the Ypresian to the top of the Late/Upper Eocene or 56.00000 to 33.90000 Ma

Collections (23 total)


Time interval Ma Country or state Original ID and collection number
Ypresian56.0 - 48.07USA (California) Nayadina llajasensis (201247)
Ypresian56.0 - 48.07USA (Oregon) Exputens alexi (200802)
Ypresian56.0 - 48.07USA (Washington) Nayadina batequensis (5544 5546 5547 5549)
Ypresian56.0 - 48.07Mexico (Baja California Sur) Nayadina batequensis (5496 5507)
Ypresian - Lutetian56.0 - 41.03USA (California) Nayadina llajasensis (8014)
Lutetian48.07 - 41.03USA (California) Exputens llajasensis (166460) Nayadina llajasensis (8012 51921 200838 201254 201259 201261)
Lutetian48.07 - 41.03USA (South Carolina) Nayadina sp. (5462)
Middle Eocene48.07 - 37.71USA (California) Exputens alexi (206341)
Middle Eocene48.07 - 37.71Panama Exputens bostrychodes (42493)
Bartonian - Priabonian41.03 - 33.9USA (Florida) Exputens ocalensis (99208 99254)
Late/Upper Eocene37.71 - 33.9Panama Exputens bostrychodes (42489)
Priabonian37.71 - 33.9USA (Florida) Exputens ocalensis (3570)