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2003-12Zeitschriftenartikel DOI: 10.18452/21732
A harvestman (Arachnida: Opiliones) from the Early Devonian Rhynie cherts, Aberdeenshire, Scotland
dc.contributor.authorDunlop, Jason
dc.contributor.authorAnderson, Lyall I.
dc.contributor.authorKerp, Hans
dc.contributor.authorHass, Hagen
dc.date.accessioned2020-08-19T09:22:51Z
dc.date.available2020-08-19T09:22:51Z
dc.date.issued2003-12none
dc.identifier.urihttp://edoc.hu-berlin.de/18452/22449
dc.descriptionThis publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.none
dc.description.abstractA harvestman (Arachnida: Opiliones) is described from the Early Devonian (Pragian) Rhynie cherts, Aberdeenshire, Scotland. Eophalangium sheari gen. et sp. nov. is the oldest known harvestman. The material includes both males and a female preserving, respectively, a cuticle-lined penis and ovipositor within the opisthosoma. Both these structures are of essentially modern appearance. The Rhynie fossils also show tracheae which are, again, very similar to those of living harvestmen. This is the oldest unequivocal record of arachnid tracheal respiration and indicates that E. sheari was terrestrial. An annulate, setose ovipositor in the female suggests that it can be excluded from the clades Dyspnoi and Laniatores, in which the ovipositor lacks such annulations. However, the penis shows evidence of two muscles, a feature of uncertain polarity seen in modern Troguloidea (Dyspnoi). The presence of median eyes and long legs excludes Cyphophthalmi, and thus, E. sheari is tentatively referred to the suborder Eupnoi. Therefore, this remarkable material is implicitly a crown-group harvestman and is one of the oldest known crown-group chelicerates. It also suggests an extraordinary degree of morphological stasis within the eupnoid line, with the Devonian forms differing little in gross morphology – and perhaps in reproductive behaviour – from their modern counterparts.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectArthropodaeng
dc.subjectEupnoieng
dc.subjectovipositoreng
dc.subjectpeniseng
dc.subjectphylogenyeng
dc.subjecttracheaeeng
dc.subjectterrestrialisationeng
dc.subject.ddc565 Fossile Arthropoden (Gliederfüßer)none
dc.subject.ddc595 Arthropoden (Gliederfüßer)none
dc.titleA harvestman (Arachnida: Opiliones) from the Early Devonian Rhynie cherts, Aberdeenshire, Scotlandnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/22449-1
dc.identifier.doihttp://dx.doi.org/10.18452/21732
dc.type.versionpublishedVersionnone
local.edoc.pages14none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn1473-7116
dcterms.bibliographicCitation.doi10.1017/S0263593300000730
dcterms.bibliographicCitation.journaltitleTransactions of the Royal Society of Edinburgh: Earth Sciencesnone
dcterms.bibliographicCitation.volume94none
dcterms.bibliographicCitation.issue4none
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Edinburghnone
dcterms.bibliographicCitation.originalpublisherplaceEdinburghnone
dcterms.bibliographicCitation.pagestart341none
dcterms.bibliographicCitation.pageend354none
bua.departmentSonstige Einrichtungen der Universitätnone

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