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Statements

Subject Item
n2:RIV%2F00023272%3A_____%2F10%3A%230001318%21RIV11-MK0-00023272
rdf:type
n9:Vysledek skos:Concept
dcterms:description
Machaeracanthus is a genus based on a few diagnostically significant characters which are useful in separating species. The cross-sectional shape of the spines has been the main character used to diagnose the different species, but this shape varies along the length of the spine and has often been inaccurately estimated. Machaeracanthus spines differ from the „normal“ fin spines of acanthodians and chondrichthyans in that the central canal is totally enclosed, rather than opening out along the proximal end of the trailing edge. A re-examination of specimens indicates that Machaeracanthus had „paired pairs“ of pectoral spines and a distinctive perichondrally ossified scapulocoracoid resembling those of ischnacanthiform acanthodians. Machaeracanthus is a genus based on a few diagnostically significant characters which are useful in separating species. The cross-sectional shape of the spines has been the main character used to diagnose the different species, but this shape varies along the length of the spine and has often been inaccurately estimated. Machaeracanthus spines differ from the „normal“ fin spines of acanthodians and chondrichthyans in that the central canal is totally enclosed, rather than opening out along the proximal end of the trailing edge. A re-examination of specimens indicates that Machaeracanthus had „paired pairs“ of pectoral spines and a distinctive perichondrally ossified scapulocoracoid resembling those of ischnacanthiform acanthodians.
dcterms:title
A new look at Machaeracanthus A new look at Machaeracanthus
skos:prefLabel
A new look at Machaeracanthus A new look at Machaeracanthus
skos:notation
RIV/00023272:_____/10:#0001318!RIV11-MK0-00023272
n3:aktivita
n19:Z
n3:aktivity
Z(MK00002327201)
n3:dodaniDat
n5:2011
n3:domaciTvurceVysledku
n14:4307372
n3:druhVysledku
n8:C
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
244749
n3:idVysledku
RIV/00023272:_____/10:#0001318
n3:jazykVysledku
n7:eng
n3:klicovaSlova
Machaeracanthus; acanthodians; systematic; morphology; Devonian
n3:klicoveSlovo
n4:acanthodians n4:Devonian n4:systematic n4:morphology n4:Machaeracanthus
n3:kontrolniKodProRIV
[3B6DF8E4A180]
n3:mistoVydani
Mnichov, Německo
n3:nazevZdroje
Morphology, Phylogeny and Paleobiogeography of Fossil Fishes
n3:obor
n13:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetStranKnihy
472
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n5:2010
n3:tvurceVysledku
Südkamp, Wouter H. Desbiens, Sylvain Ekrt, Boris Burrow, Carole J.
n3:zamer
n10:MK00002327201
s:numberOfPages
26
n16:hasPublisher
Verlag Dr. Friedrich Pfeil, München
n18:isbn
978-3-89937-122-2