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Open AccessReview

On the Systematics and Biodiversity of the Palaeoannelida

1
Departamento de Bioloxía, Universidade da Coruña, 15001 A Coruña, Spain
2
Department of Natural Sciences, Amgueddfa Cymru—National Museum Wales, Cathays Park, Cardiff CF10 3NP, Wales, UK
3
Departament de Biologia, Universitat de les Illes Balears, 07122 Palma, Spain
4
Departamento de Biología (Zoología) and Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
*
Author to whom correspondence should be addressed.
Diversity 2021, 13(2), 41; https://doi.org/10.3390/d13020041
Received: 28 December 2020 / Revised: 14 January 2021 / Accepted: 15 January 2021 / Published: 21 January 2021
(This article belongs to the Special Issue Systematics and Biodiversity of Annelids)
Palaeoannelida Weigert and Bleidorn, 2016 is an old clade branching off at the base of the Annelida radiation. It includes two morphologically and ecological divergent groups of sedentary burrowers and tube-dwellers: Magelonidae Cunningham and Ramage, 1888, and Oweniidae Rioja, 1917. Magelonids are characterised by a flattened, shovel-shaped prostomium and a pair of ventral papillated palps. Oweniids have simplified bodies lacking parapodia or appendages and are easily distinguished by the presence of oval patches of packed uncini, each with two distal curved teeth. The present review aims to summarise available information about the diversity of forms and life strategies displayed in the group, providing some guidelines for species identification and the techniques commonly used for their study. In addition, the assumed geographic distributions of some taxa are critically discussed. A brief introduction about the evolutionary relationships, systematics, and taxonomic history is given for both Magelonidae and Oweniidae. The motivation of this review is to highlight the main knowledge gaps from a taxonomic, methodological, and geographic perspective, aiming at stimulating further research into members of this clade. View Full-Text
Keywords: Oweniidae; Magelonidae; diversity; taxonomy; anatomy; biology Oweniidae; Magelonidae; diversity; taxonomy; anatomy; biology
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MDPI and ACS Style

Parapar, J.; Mortimer, K.; Capa, M.; Moreira, J. On the Systematics and Biodiversity of the Palaeoannelida. Diversity 2021, 13, 41. https://doi.org/10.3390/d13020041

AMA Style

Parapar J, Mortimer K, Capa M, Moreira J. On the Systematics and Biodiversity of the Palaeoannelida. Diversity. 2021; 13(2):41. https://doi.org/10.3390/d13020041

Chicago/Turabian Style

Parapar, Julio; Mortimer, Kate; Capa, María; Moreira, Juan. 2021. "On the Systematics and Biodiversity of the Palaeoannelida" Diversity 13, no. 2: 41. https://doi.org/10.3390/d13020041

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