A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins
Identifieur interne : 001602 ( Istex/Corpus ); précédent : 001601; suivant : 001603A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins
Auteurs : Erbol Ivor WhiteSource :
- Proceedings of the Zoological Society of London [ 0370-2774 ] ; 1939-05.
Abstract
A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian Acanthodes wardi Egerton and the Palaeoniscid ElonicMhys aitkeni Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, Cornuboniscus budensis, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus Tarrasius and the living Polypterines, and it is tentatively suggested that Cornuboniscus may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which Tarrasius and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region. Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.
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DOI: 10.1111/j.1469-7998.1939.tb00023.x
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A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title><author><name sortKey="White, Erbol Ivor" sort="White, Erbol Ivor" uniqKey="White E" first="Erbol Ivor" last="White">Erbol Ivor White</name><affiliation><mods:affiliation>Department of Geology, British Museum (Natural History)</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:103A38B488219B07653856D89EA7EB39A2BCB031</idno><date when="1939" year="1939">1939</date><idno type="doi">10.1111/j.1469-7998.1939.tb00023.x</idno><idno type="url">https://api.istex.fr/document/103A38B488219B07653856D89EA7EB39A2BCB031/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001602</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001602</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title><author><name sortKey="White, Erbol Ivor" sort="White, Erbol Ivor" uniqKey="White E" first="Erbol Ivor" last="White">Erbol Ivor White</name><affiliation><mods:affiliation>Department of Geology, British Museum (Natural History)</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Proceedings of the Zoological Society of London</title><idno type="ISSN">0370-2774</idno><idno type="eISSN">1469-7998</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1939-05">1939-05</date><biblScope unit="volume">B109</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="41">41</biblScope><biblScope unit="page" to="61">61</biblScope></imprint><idno type="ISSN">0370-2774</idno></series><idno type="istex">103A38B488219B07653856D89EA7EB39A2BCB031</idno><idno type="DOI">10.1111/j.1469-7998.1939.tb00023.x</idno><idno type="ArticleID">JZO41</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0370-2774</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian Acanthodes wardi Egerton and the Palaeoniscid ElonicMhys aitkeni Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, Cornuboniscus budensis, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus Tarrasius and the living Polypterines, and it is tentatively suggested that Cornuboniscus may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which Tarrasius and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region. Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Erbol Ivor White D.Sc, F.Z.S.</name><affiliations><json:string>Department of Geology, British Museum (Natural History)</json:string></affiliations></json:item></author><articleId><json:string>JZO41</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian Acanthodes wardi Egerton and the Palaeoniscid ElonicMhys aitkeni Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, Cornuboniscus budensis, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus Tarrasius and the living Polypterines, and it is tentatively suggested that Cornuboniscus may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which Tarrasius and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region. Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.</abstract><qualityIndicators><score>8.5</score><pdfVersion>1.4</pdfVersion><pdfPageSize>481.92 x 722.639 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1726</abstractCharCount><pdfWordCount>8130</pdfWordCount><pdfCharCount>44228</pdfCharCount><pdfPageCount>21</pdfPageCount><abstractWordCount>266</abstractWordCount></qualityIndicators><title>A NEW TYPE OF PALAONISCOID FISH: 3. 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A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title><author xml:id="author-1"><persName><forename type="first">Erbol Ivor</forename><surname>White</surname></persName><roleName type="degree">D.Sc, F.Z.S.</roleName><affiliation>Department of Geology, British Museum (Natural History)</affiliation></author></analytic><monogr><title level="j">Proceedings of the Zoological Society of London</title><idno type="pISSN">0370-2774</idno><idno type="eISSN">1469-7998</idno><idno type="DOI">10.1111/(ISSN)1469-7998b</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1939-05"></date><biblScope unit="volume">B109</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="41">41</biblScope><biblScope unit="page" to="61">61</biblScope></imprint></monogr><idno type="istex">103A38B488219B07653856D89EA7EB39A2BCB031</idno><idno type="DOI">10.1111/j.1469-7998.1939.tb00023.x</idno><idno type="ArticleID">JZO41</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1939</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian Acanthodes wardi Egerton and the Palaeoniscid ElonicMhys aitkeni Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, Cornuboniscus budensis, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus Tarrasius and the living Polypterines, and it is tentatively suggested that Cornuboniscus may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which Tarrasius and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region. Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.</p></abstract></profileDesc><revisionDesc><change when="1939-05">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/103A38B488219B07653856D89EA7EB39A2BCB031/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1469-7998b</doi><issn type="print">0370-2774</issn><issn type="electronic">1469-7998</issn><idGroup><id type="product" value="JZO"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="PROCEEDINGS OF THE ZOOLOGICAL SOCIETY OF LONDON">Proceedings of the Zoological Society of London</title></titleGroup></publicationMeta><publicationMeta level="part" position="05101"><doi origin="wiley">10.1111/jzo.1939.B109.issue-1</doi><numberingGroup><numbering type="journalVolume" number="109">B109</numbering><numbering type="journalIssue" number="1">1</numbering></numberingGroup><coverDate startDate="1939-05">May 1939</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0004100" status="forIssue"><doi origin="wiley">10.1111/j.1469-7998.1939.tb00023.x</doi><idGroup><id type="unit" value="JZO41"></id></idGroup><countGroup><count type="pageTotal" number="21"></count></countGroup><titleGroup><title type="tocHeading1">Original Article</title></titleGroup><eventGroup><event type="firstOnline" date="2009-08-21"></event><event type="publishedOnlineFinalForm" date="2010-07-06"></event><event type="publishedOnlineAcceptedOrEarlyUnpaginated" date="2009-08-21"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.27 mode:FullText source:HeaderRef result:HeaderRef" date="2010-11-22"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-02-01"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-11-03"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="41">41</numbering><numbering type="pageLast" number="61">61</numbering></numberingGroup><linkGroup><link type="toTypesetVersion" href="file:JZO.JZO41.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received September 27, 1938: Read March 7, 1939</unparsedEditorialHistory><countGroup><count type="referenceTotal" number="27"></count><count type="linksCrossRef" number="1"></count></countGroup><titleGroup><title type="main">A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>Erbol Ivor</givenNames><familyName>White</familyName><degrees>D.Sc, F.Z.S.</degrees></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation>Department of Geology, British Museum (Natural History)</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary.</title><p>A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian <i>Acanthodes wardi</i> Egerton and the Palaeoniscid <i>ElonicMhys aitkeni</i> Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, <i>Cornuboniscus budensis</i>, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus <i>Tarrasius</i> and the living Polypterines, and it is tentatively suggested that <i>Cornuboniscus</i> may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which <i>Tarrasius</i> and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region.</p><p>Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>A NEW TYPE OF PALAONISCOID FISH: 3. A new Type of Palaeoniscoid Fish, with Remarks on the Evolution of the Actinopterygian Pectoral Fins</title></titleInfo><name type="personal"><namePart type="given">Erbol Ivor</namePart><namePart type="family">White</namePart><namePart type="termsOfAddress">D.Sc, F.Z.S.</namePart><affiliation>Department of Geology, British Museum (Natural History)</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">1939-05</dateIssued><edition>Received September 27, 1938: Read March 7, 1939</edition><copyrightDate encoding="w3cdtf">1939</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="references">27</extent></physicalDescription><abstract lang="en">A new fish‐fauna is described from the Middle Culm (barren Coal) Measures of Bude, North Cornwall, comprising three species, of which two, the Acan‐thodian Acanthodes wardi Egerton and the Palaeoniscid ElonicMhys aitkeni Traquair, are already well known and have a fairly wide distribution in the English Coal Measures. The third form belongs to a very distinct new genus and species, Cornuboniscus budensis, which, while a typical Palaeoniscid in its fusiform shape, heterocercal tail, and in most other features of its external anatomy, differs from all normal members of that group in having a paddlelike pectoral fin supported by a uniform row of radials but without basal elements. The structure of this fin is compared with those of the aberrant Lower Carboniferous genus Tarrasius and the living Polypterines, and it is tentatively suggested that Cornuboniscus may be a survivor from the original normally shaped Palaeoniscoid stock which, after acquiring the characteristic pectoral fins, gave rise subsequently to degenerate elongated types, of which Tarrasius and the Polypterines represent different branches. The fossils are preserved as external moulds, and are sometimes quite uncrushed, so that many details of the anatomy usually obscured are finely preserved, especially the sensory canal‐system and the bones of the rostral region. Finally, in a survey of the principal types of Actinopterygian pectoral fins it is suggested on the evidence of the development of these organs that the Palseoniscoids must have divided very early into four groups, and an attempt is made to show how the principal types of pectoral fins in existing Actinopterygian fishes might have been derived from the fins in those groups.</abstract><relatedItem type="host"><titleInfo><title>Proceedings of the Zoological Society of London</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0370-2774</identifier><identifier type="eISSN">1469-7998</identifier><identifier type="DOI">10.1111/(ISSN)1469-7998b</identifier><identifier type="PublisherID">JZO</identifier><part><date>1939</date><detail type="volume"><caption>vol.</caption><number>B109</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>41</start><end>61</end><total>21</total></extent></part></relatedItem><identifier type="istex">103A38B488219B07653856D89EA7EB39A2BCB031</identifier><identifier type="DOI">10.1111/j.1469-7998.1939.tb00023.x</identifier><identifier type="ArticleID">JZO41</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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