Monograptus gregarius (Lapworth 1876)
3cm. Graptolite from the Moffat Shale Group, Llandoveryian, Silurian at Coal Pit Bay near Donaghadee in N.Ireland.
By Ludwigia
3cm. Graptolite from the Moffat Shale Group, Llandoveryian, Silurian at Coal Pit Bay near Donaghadee in N.Ireland.
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