PBDB Taxon

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

Mesopoma

Taxonomy

Mesopoma was named by R. H. Traquair (1890). It is not extant. Its type is Mesopoma pulchellum.

It was assigned to Palaeoniscidae by Traquair (1888); to Canobiidae by Gardiner (1969); and to Actinopterygii by Coates and Tietjen (2018).

Species

M. ardrossense, M. becketense, M. crassum (syn. Canobius crassum), M. fusiforme, M. macrocephalum, M. planti, M. politum (syn. Canobius politus), M. pulchellum (syn. Canobius pulchellus) (type species), M. smithsoni

Synonyms

Mesopoma becketense was named by Lowney (1980) [Unpublished PhD thesis]. Its type specimen is MV6372 and is a 3D body fossil.

It was considered a nomen nudum by Lowney (1980) and Schultze et al. (2021).

Synonymy list

Year	Name and author
1888	Mesopoma Traquair
1890	Mesopoma R. H. Traquair
1969	Mesopoma Gardiner
1980	Mesopoma becketense Lowney pp. 60-77
2018	Mesopoma Coates and Tietjen

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874

Rank	Name	Author
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
—	Actinopterygii	()
genus	Mesopoma

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.

G. †Mesopoma R. H. Traquair 1890

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†Mesopoma ardrossense Moy-Thomas 1938

†Mesopoma crassum Moy-Thomas 1938

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Invalid names: Canobius crassum Traquair 1914 [replaced]

†Mesopoma fusiforme Traquair 1881

†Mesopoma macrocephalum Traquair 1890

†Mesopoma planti Traquair 1888

†Mesopoma politum Traquair 1881

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Invalid names: Canobius politus Traquair 1881 [synonym]

†Mesopoma pulchellum Traquair 1881

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Invalid names: Canobius pulchellus Traquair 1881 [synonym]

†Mesopoma smithsoni Coates 1993

Invalid names: Mesopoma becketense Lowney 1980 [nomen nudum]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

marinesubp

Locomotion:

actively mobilec

Created:

2009-07-20 21:50:54

Modified:

2009-07-20 23:50:54

Source: c = class, subp = subphylum

References: Hendy et al. 2009, Carroll 1988

Age range: base of the Arundian to the top of the Arnsbergian or 346.70000 to 323.70000 Ma

Collections (14 total)

Time interval	Ma	Country or state	Original ID and collection number
Arundian	346.7 - 340.0	United Kingdom (Scotland)	M. macrocephallum, M. pulchellum, Rhadinichthys fusiformis, M. politum, M. crassum (90682)
Visean	346.7 - 330.9	Belarus (Homel)	M. pulchellum (232527)
Visean	346.7 - 330.9	United Kingdom (Scotland)	M. macrocephalum (174063) M. sp. (21323)
Asbian	340.0 - 336.0	United Kingdom (Scotland)	M. crissum, M. sp., M. pulchellum, Rhadinichthys fusiformis, M. politum (230308) M. macrocephalum (230465) M. pulchellum, M. politum (230310)
Asbian - Brigantian	340.0 - 330.9	United Kingdom (Scotland)	M. macrocephalum (229961 230464)
Brigantian	336.0 - 330.9	United Kingdom (Scotland)	M. ardrossense (229842)
Pendleian	330.9 - 327.0	United Kingdom (Scotland)	M. n. sp. A, M. n. sp. B (225477) M. smithsoni (195565)
Arnsbergian	327.0 - 323.7	USA (Montana)	M. becketense (116654 116659)