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Myonia undata

Bivalvia - Sanguinolitidae

Taxonomy
Pholadomya undata was named by Dana (1847). Its type specimen is USNM 3639 and is a 3D body fossil. Its type locality is Wollongong Point, Illawarra (USNM coll), which is in a Wordian coastal siliciclastic in the Gerringong Formation of Australia.

It was recombined as Chaenomya undatus by Laseron (1910); it was recombined as Pyramus undatus by Runnegar (1967); it was recombined as Myonia undata by Fletcher (1932), Waterhouse (1964), Waterhouse (1969) and Waterhouse (1988).

Synonymy list
YearName and author
1847Pholadomya undata Dana p. 153
1849Pholadomya undata Dana p. 687 figs. Pl 2, fig 11
1910Chaenomya undatus Laseron p. 209
1932Myonia undata Fletcher p. 407
1964Myonia undata Waterhouse p. 74
1967Pyramus undatus Runnegar p. 44 figs. Pl 4, fig 2
1969Myonia undata Waterhouse p. 63
1988Myonia undata Waterhouse p. 182 figs. Pl 9, figs 2, 3, 5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Gray 1854)
—CardiomorphiFerussac 1822
—CardioniFerussac 1822
—CardiidiaFerussac 1822
superfamilyGrammysioideaMiller 1877
familySanguinolitidaeMiller 1877
subfamilyVacunellinae(Astafieva-Urbajtis 1973)
genusMyonia
speciesundata()

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.

†Myonia undata Dana 1847
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
valve height230.421.044.032.516.3

Composition: aragonitec
Locomotion: facultatively mobilec
Life habit: deep infaunalg
Diet: suspension feederc
Vision: blindc
Created: 2009-10-12 12:33:56
Modified: 2009-10-12 14:33:56
Source: g = genus, c = class
References: Aberhan et al. 2004, Clapham 2015

Age range: base of the Roadian to the top of the Capitanian or 272.30000 to 259.51000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Roadian272.3 - 268.8Australia (New South Wales) Chaenomya undatus (161842)
Wordian266.9 - 264.28Australia (New South Wales) Pholadomya undata (type locality: 133336)
Capitanian264.28 - 259.51New Zealand (Southland) Myonia undata (41777)