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Polychaeta taxon detailsMachaeridia †
 819076 (urn:lsid:marinespecies.org:taxname:819076)
Withers, 1926
accepted
Class
marine, terrestrial
fossil only
Withers, Thomas Henry. (1926). Catalogue of the Machaeridia (Turrilepas and its allies) in the Department of Geology. 1-99., available online at https://doi.org/10.5962/bhl.title.8581
page(s): 5 [as 'group' unassigned to phylum] [details]
Etymology 'Machaeridia' is not a name related to any included taxa. Withers (1926:4) stated "…it has been thought better in this...
Etymology 'Machaeridia' is not a name related to any included taxa. Withers (1926:4) stated "…it has been thought better in this work to cut adrift from the Cirripedia and to give a fresh name that should suggest no relationship. In allusion to the somewhat sabre- or blade-shaped form of the fossils, the name Machaeridia [diminutive of sabre) has been selected" [details] Taxonomy Withers (1926) "The [included] genera … fall into two divisions according as the columns of plates are two or four in...
Taxonomy Withers (1926) "The [included] genera … fall into two divisions according as the columns of plates are two or four in number. The former division includes only Lepidocoleus , which has already given its name to a Family, the Lepidocoleidae of J. M. Clarke (1896). The latter division, corresponding to the Turrilepadidae of J. M. Clarke (1896), includes Turrilepas and Plumulites, … and Deltacoleus. [details]
Read, G.; Fauchald, K. (Ed.) (2025). World Polychaeta Database. Machaeridia †. Accessed at: https://www.marinespecies.org/polychaeta/aphia.php?p=taxdetails&id=819076 on 2025-07-10
Date action by
original description
Withers, Thomas Henry. (1926). Catalogue of the Machaeridia (Turrilepas and its allies) in the Department of Geology. 1-99., available online at https://doi.org/10.5962/bhl.title.8581
page(s): 5 [as 'group' unassigned to phylum] [details] taxonomy source Parry, L.; Tanner, A.; Vinther, J. (2014). The origin of annelids. <em>Palaeontology.</em> 57(6): 1091-1103., available online at https://doi.org/10.1111/pala.12129 page(s): [a new machaeridia clade, Cuniculepadida] [details] status source Vinther, J.; Van Roy, P.; Briggs, D. E. G. (2008). Machaeridians are Palaeozoic armoured annelids. Nature. 451(7175): 185-188., available online at https://doi.org/10.1038/nature06474 page(s): 185; note: Places as a Class in Annelida [details] status source Vinther, J.; Rudkin, D. (2010). The first articulated specimen of Plumulites canadensis (Woodward, 1889) from the Upper Ordovician of Ontario, with a review of the anterior region of Plumulitidae (Annelida: Machaeridia). Palaeontology. 53(2): 327-334., available online at https://doi.org/10.1111/j.1475-4983.2010.00938.x [details] From editor or global species database
Classification Parry et al. (2014) introduced informally a new clade, Cuniculepadida, for non-plumulitid machaeridians. These are the Turrilepadids and lepidocoleids, the laterally compressed machaeridians. Earlier Vinther & Rudkin (2010) continued the Machaeridia placed as Annelida, but stated that "Although machaeridians have features that suggest they could be an aphroditacean stem group (and thus with the annelid crown), their distinctive calcitic skeletal array demonstrates their monophyly." [details]Etymology 'Machaeridia' is not a name related to any included taxa. Withers (1926:4) stated "…it has been thought better in this work to cut adrift from the Cirripedia and to give a fresh name that should suggest no relationship. In allusion to the somewhat sabre- or blade-shaped form of the fossils, the name Machaeridia [diminutive of sabre) has been selected" [details] Taxonomy Withers (1926) "The [included] genera … fall into two divisions according as the columns of plates are two or four in number. The former division includes only Lepidocoleus , which has already given its name to a Family, the Lepidocoleidae of J. M. Clarke (1896). The latter division, corresponding to the Turrilepadidae of J. M. Clarke (1896), includes Turrilepas and Plumulites, … and Deltacoleus. [details] |
