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Promyalina spathi

Bivalvia - Myalinida - Myalinidae

Taxonomy
Myalina spathi was named by Newell and Kummel (1942). Its type specimen is AMNH 28349 and is a 3D body fossil. Its type locality is Melrose, Claraia zone, Beaverhead County, which is in a Griesbachian marine mixed carbonate-siliciclastic in the Dinwoody Formation of Montana.

It was recombined as Promyalina spathi by Ciriacks (1963) and Hofmann et al. (2013).

Synonymy list
YearName and author
1942Myalina spathi Newell and Kummel p. 956 figs. Pl 3, fig 11
1963Promyalina spathi Ciriacks p. 76 figs. Pl 16, fig 6
2013Promyalina spathi Hofmann et al. p. 864 fig. 8.2

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassPteriomorphia(Beurlen 1944)
—OstreomorphiFerussac 1822
—OstreioniFerussac 1822
—MyalinataPaul 1939
orderMyalinidaPaul 1939
superfamilyAmbonychioidea(Miller 1877)
familyMyalinidaeFrech 1891
genusPromyalina
speciesspathi()

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.

†Promyalina spathi Newell and Kummel 1942
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height122.0----
valve height229.425.833.529.65.44

Composition: aragonitec
Locomotion: facultatively mobilesubc
Life habit: epifaunalsubc
Diet: suspension feedersubc
Vision: blindc
Created: 2014-02-09 11:13:23
Modified: 2014-02-09 11:13:23
Source: subc = subclass, c = class
References: Eaton 1871, Aberhan et al. 2004

Age range: Spathian or 251.30000 to 247.20000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Changhsingian - Griesbachian254.17 - 250.5China (Guizhou) Promyalina spathi (205986 205993)
Induan252.17 - 251.2USA (Idaho) Promyalina spathi (105398)
Griesbachian251.902 - 250.5USA (Montana) Myalina spathi (type locality: 105392) Promyalina spathi (150714 150715 150716 150717 150718 150722)
Griesbachian251.902 - 250.5USA (Wyoming) Promyalina spathi (150701 150704 150705 150706 150710)
Spathian251.3 - 247.2USA (Utah) Promyalina spathi (122207)
Dienerian250.5 - 251.2USA (Utah) Promyalina spathi (150735)