Genus: Macromerium LYDEKKER, 1890
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= Macromerion FRITSCH, 1885 non
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Species: schwarzenbergii (FRITSCH, 1875) FRITSCH, 1879
= Macromerion (Labyrinthodon) schwarzenergii FRITSCH , 1875
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= Macromerion schwarzenbergii (FRITSCH, 1875) FRITSCH, 1885

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Species: bayeri FRITSCH, 1879
= Macromerion bayeri (FRITSCH, 1879) FRITSCH, 1885
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Species: abbreviatum FRITSCH, 1879
= Macromerion abbreviatum (FRITSCH, 1879) FRITSCH, 1885
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Species:? juvenile FRITSCH, 1879
= Macromerion? juvenile (FRITSCH, 1879) FRITSCH, 1885
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Species:? pauperum FRITSCH, 1879
= Macromerion? pauperum (FRITSCH, 1879) FRITSCH, 1885
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Species:? simplex FRITSCH, 1879
= Macromerion? simplex (FRITSCH, 1879) FRITSCH, 1885
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Species: bicolor FRITSCH, 1879
= Macromerion? bicolor (FRITSCH, 1879) FRITSCH, 1885
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Species: scoticum LYDEKKER, 1890
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Holotype: BMNH R310

Locality: England, Southern United Kingdom.

Horizon: Gilmerton Ironstone, Lower Limestone Group.

Biostratigraphy:

Age: Brigantian, upper Visean, uppermost Dinantion, Visean Epoch, Early Carboniferous (Early Late Mississippian).

Material: Fragmentary lower jaw.