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Polidevcia obesa

Bivalvia - Nuculanida - Polidevciidae

Taxonomy
Nuculana obesa was named by White (1879).

It was recombined as Leda obesa by Girty (1910), Branson (1930); it was recombined as Polidevcia obesa by Ciriacks (1963), Yancey (1978).

Sister species lacking formal opinion data
Phestia subperlonga, P. acuta, P. insolita, P. omolonica, P. vaseyana

Synonymy list
YearName and author
1879Nuculana obesa White
1910Leda obesa Girty p. 40 figs. Pl 4, figs 7,8
1930Leda obesa Branson p. 43 figs. Pl 10, figs 21,22
1952Nuculana obesa Chronic p. 137 figs. Pl 6, figs 1a-3
1953Nuculana obesa Cooper p. 78 figs. Pl 23, figs 29-32
1963Polidevcia obesa Ciriacks p. 42 figs. Pl 4, figs 1-3
1967Nuculana obesa Mayou p. 117 figs. Pl 1, fig 11
1978Polidevcia obesa Yancey p. 330 figs. Pl 9, figs 6-9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
RankNameAuthor
subclassProtobranchia(Pelseneer 1889)
superorderNuculaniformiiCarter et al. 2000
orderNuculanida(Carter et al. 2000)
superfamilyNuculanoideaAdams and Adams 1858
familyPolidevciidaeKumpera 1960
subfamilyPolidevciinaeKumpera et al. 1960
genusPolidevcia(Tschernyschev 1943)
speciesobesa(White 1879)

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.

†Polidevcia obesa White 1879
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height119.604.8019.711.04.39
valve height516.515.219.115.51.81

Composition: aragonitec
Locomotion: facultatively mobilesuperf
Life habit: infaunalsuperf
Diet: deposit feedersuperf
Vision: blindc
Created: 2009-09-09 13:26:01
Modified: 2009-09-09 15:26:01
Source: superf = superfamily, c = class
References: Sanchez Roig 1926, Aberhan et al. 2004

Age range: base of the Kungurian to the top of the Wuchiapingian or 283.30000 to 254.14000 Ma

Collections (40 total)


Time interval Ma Country or state Original ID and collection number
Leonardian286.0 - 274.4USA (Montana) Polidevcia obesa (11281)
Kungurian283.3 - 274.4USA (Nevada) Nuculana obesa (38744 38745 38749 38751 38753 38756 38768 38775 38827 38828) Polidevcia obesa (120952 120980)
Kungurian283.3 - 274.4USA (Wyoming) Polidevcia obesa (105373)
Kungurian283.3 - 274.4USA (New Mexico) Leda obesa (233342)
Roadian274.4 - 266.9USA (Utah) Polidevcia obesa (11271)
Roadian274.4 - 266.9USA (Idaho) Leda obesa (88260 108903 108921 108926) Polidevcia obesa (11285 105356)
Roadian274.4 - 266.9USA (Wyoming) Leda obesa (108911 108913 108919) Polidevcia obesa (11229)
Roadian274.4 - 266.9USA (Montana) Polidevcia obesa (11280)
Roadian274.4 - 266.9USA (Arizona) Nuculana obesa (40000 40001) Polidevcia obesa (120948)
Guadalupian274.4 - 259.51USA (Wyoming) Leda obesa (236340)
Wordian266.9 - 264.28USA (Wyoming) Polidevcia obesa (11225 11226)
Wordian266.9 - 264.28Mexico (Sonora) Nuculana obesa (40823)
Wuchiapingian259.51 - 254.14USA (Montana) Polidevcia obesa (11279 105277)
Wuchiapingian259.51 - 254.14USA (Wyoming) Polidevcia obesa (11228)
Wuchiapingian259.51 - 254.14USA (Idaho) Polidevcia obesa (11283 11284)
Lopingian259.51 - 251.902USA (Wyoming) Polidevcia obesa (11224)