Oerstediina

• Main Author: Kajihara, Hiroshi
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Nemertea; Enopla; Monostilifera; Christensen; Morton; Kamchatka; Red king crab
• Online Access: https://dx.doi.org/10.5281/zenodo.4519275; https://zenodo.org/record/4519275

Infraorder OERSTEDIINA Morphological circumscription Eumonostiliferans with the cephalic blood vessels protruding into the rhynchocoel as they pass through the cerebral ring, often forming a pair of vascular plugs; the mid-dorsal vessel not penetrating into the rhynchocoel to form a single vascular plug. Clade definition Eumonostiliferans that are more closely related to Oerstedia dorsalis (Abildgaard, 1806) than to Amphiporus lactifloreus (Johnston, 1828). Constituent families Oerstediidae Chernyshev, 1993 and Plectonemertidae Gibson, 1990a. Remarks As far as I am aware, Moore & Gibson (1988) were the first to envisage Oerstedia Quatrefages, 1846 as closely related to Plectonemertidae by having two vascular plugs. This conjecture was later confirmed with molecular phylogenetic analyses, first by Mateos & Giribet (2008) and then more convincingly by Kajihara & Kuris (2013), Kvist et al . (2014, 2015), and Chernyshev & Polyakova (2018 a, b, 2019) [ Oerstedia was not included in the extensive analysis by Andrade et al . (2012)]. The clade comprising Acteonemertidae + Oerstedia and their kin was named Oerstediina (Chernyshev & Polyakova 2019), with neither Linnaean rank nor morphological circumscription. Here I place it at the infraorder rank. The suffix -ina must be used for the name of a subtribe when the taxon is placed on any of family group ranks in accordance with Article 29.2 of the Code (ICZN 1999); however, the Code (ICZN 1999) does not forbid the usage of -ina for ranks above the family group. While this may lead to confusion, I leave the ending as it was proposed by Chernyshev & Polyakova (2019). : Published as part of Kajihara, Hiroshi, 2021, Higher classification of the Monostilifera (Nemertea: Hoplonemertea), pp. 151-199 in Zootaxa 4920 (2) on pages 157-158, DOI: 10.11646/zootaxa.4920.2.1, http://zenodo.org/record/4475126 : {"references": ["Abildgaard, P. 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(Ed.), Proceedings of the Second International Marine Biological Workshop: The Marine Flora and Fauna of Hong Kong and Southern China. Vol. 1. Hong Kong University Press, Hong Kong, pp. 33 - 212.", "Moore, J. & Gibson, R. (1988) Marine relatives of terrestrial nemerteans: the genus Prosadenoporus Burger, 1890 (Hoplonemertea). Hydrobiologia, 156, 75 - 86. https: // doi. org / 10.1007 / BF 00027980", "Quatrefages, A. de (1846) Etude sur les types inferieurs de l'embrachement des anneles. Annales des Sciences Naturelles, Zoologie, Serie 3, 6, 173 - 303. [https: // www. biodiversitylibrary. org / item / 47986 page / 179 / mode / 1 up]", "Mateos, E. & Giribet, G. (2008) Exploring the molecular diversity of terrestrial nemerteans (Hoplonemertea, Monostilifera, Acteonemertidae) in a continental landmass. Zoologica Scripta, 37, 235 - 243. https: // doi. org / 10.1111 / j. 1463 - 6409.2008.00324. x", "Kajihara, H. & Kuris, A. 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