Machaeridia (annelid)

Machaeridia; Temporal range: Early Ordovician–Carboniferous PreꞒ Ꞓ O S D C P T J K Pg N
	Turrilepas specimens.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Annelida
Class:	†Machaeridia
Families
	Plumulitidae Turrilepadidae Lepidocoleidae

Machaeridia is an extinct group of armoured, segmented annelid worms, known from the Early Ordovician (Late Tremadoc) to Carboniferous. It consists of three distinct families: the plumulitids, turrilepadids and lepidocoleids.^[2]

^ Herringshaw, L. G.; Raine, R. J. (2007). "The earliest turrilepadid: A machaeridian from the Lower Ordovician of the Northwest Highlands". Scottish Journal of Geology. 43 (2): 97. Bibcode:2007ScJG...43...97H. doi:10.1144/sjg43020097. S2CID 128899353.
^ Vinther, Jakob; Van Roy, P; Briggs, DE (2008). "Machaeridians are Palaeozoic armoured annelids". Nature. 451 (7175): 185–8. Bibcode:2008Natur.451..185V. doi:10.1038/nature06474. PMID 18185586. S2CID 4401508.

[1] Herringshaw, L. G.; Raine, R. J. (2007). "The earliest turrilepadid: A machaeridian from the Lower Ordovician of the Northwest Highlands". Scottish Journal of Geology. 43 (2): 97. Bibcode:2007ScJG...43...97H. doi:10.1144/sjg43020097. S2CID 128899353.

[Vinther2008-2] Vinther, Jakob; Van Roy, P; Briggs, DE (2008). "Machaeridians are Palaeozoic armoured annelids". Nature. 451 (7175): 185–8. Bibcode:2008Natur.451..185V. doi:10.1038/nature06474. PMID 18185586. S2CID 4401508.

[1]

[2]