{"refrec":{"BRefID":12771,"RR":"<b>Grygier, M.J.</b> (1983). Ascothoracida and the unity of Maxillopoda, <b><i>in</i></b>: Schram, F.R. (Ed.) <i>Crustacean phylogeny. Crustacean Issues,</i> 1: pp. 73-104","BEntID":12771,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Schram, F.R. (Ed.) <i>Crustacean phylogeny. Crustacean Issues = Advances in Crustacean Research,</i> 1: pp. 73-104","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Grygier, M.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Grygier, M.J.","Englishabstract":"The class Maxillopoda (= Copepodoidea) originally contained the subclasses Copepoda, Mystacocarida, Branchiura, Cirripedia (including Rhizocephala), and Ascothoracida. This paper tries to answer the important, but neglected, question of whether such a grouping (now also including Ostracoda, Hansen's Y-larvae, <i>Basipodella harpacticola</i> and <i>Deoterthron dentatum</i>, and Pentastomida) is a natural one. A literature review of the class is conducted.All the previously suggested diagnostic characters, and some new ones, are analysed from a cladistic standpoint, and a new diagnosis based on the defensible synapomorphies is proposed. Archicopepoda (= Euthycarcinoidea) is excluded from the class, and doubts about the maxillopodan affinities of Bradoriida (including Phosphatocopina) are expressed. The (non-parasitic ancestor of the ascothoracids could have served equally well as the progenitor of all the maxillopodan taxa (i.e. the urmaxillopodan); the modifications necessary to derive each from it are detailed. Because of the extent of convergence among the component taxa, only a partially resolved cladogram of the class is proposed. Conventional notions about the relationships among maxillopodan taxa (e.g. a Copepoda-Branchiura-Mystacocarida clade) are not supported. There is some justification for formal taxonomic recognition of the class Maxillopoda, but it does not have as solid a foundation as the other crustacean classes.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"Ascothoracida and the unity of Maxillopoda","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-20 01:30:12.644835","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1983,"MonPub":null,"DateUpdate":"2001-07-04","DateCreate":"2001-07-04","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":12771,"PubliDate":1983,"Pagination":"73-104","XtraPublOfAnaID":null,"ISBN":"90-6191-231-8","Volume":"1","Issue":null,"BRefMon":12759,"BRefMonRR":"<b>Schram, F.R. (Ed.)</b> (1983). Crustacean phylogeny. <i>Crustacean Issues</i>, 1. A.A. Balkema: Rotterdam. ISBN 90-6191-231-8. 372 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":9852,"SerRR":"<b>Schram, F.R. (Ed.)</b> Crustacean Issues = Advances in Crustacean Research. Balkema/CRC Press/Taylor & Francis: Rotterdam.  ISSN 0168-6356; e-ISSN 2155-5397","StandardTitleSer":"Crustacean Issues = Advances in Crustacean Research","ISSN":"0168-6356","AbbrevSer":"Crustac. Issues","StandardTitleMon":"Crustacean phylogeny","StartPage":73,"Pages":32,"ToPubliDate":null,"BRefBibLvlCode":"MS","SerNotes":null,"AutString":"Schram, F.R. 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