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Statements

Subject Item
n2:RIV%2F00023272%3A_____%2F09%3A%230001101%21RIV10-MK0-00023272
rdf:type
skos:Concept n13:Vysledek
dcterms:description
A minute Silurian oncocerid Cyrtoceras pollux, from Bohemia is assigned here to the genus Pomerantsoceras. The only so far known species of this genus comes from Ordovician of Estonia. Pomerantsoceras thus represents, except for un-revised poorly understood taxa, the single known oncocerid genus surviving the end-Ordovician extinction events. Colour pattern characterised by a few longitudinal bands on the entire circumference of the shell is here reported in oncocerids. Longicone and only slightly curved small shells as in Pomerantsoceras are unusual among nautiloids and resemble straight shells of orthocerids and pseudorthocerids, in which the colour pattern consists of straight colour bands. Consequently the shell shape as well as the colour pattern should be regarded as adaptive convergence with orthocerids and pseudorthocerids. It supports the hypothesis that colour pattern functioned as camouflage and its evolution was under adaptive control. A minute Silurian oncocerid Cyrtoceras pollux, from Bohemia is assigned here to the genus Pomerantsoceras. The only so far known species of this genus comes from Ordovician of Estonia. Pomerantsoceras thus represents, except for un-revised poorly understood taxa, the single known oncocerid genus surviving the end-Ordovician extinction events. Colour pattern characterised by a few longitudinal bands on the entire circumference of the shell is here reported in oncocerids. Longicone and only slightly curved small shells as in Pomerantsoceras are unusual among nautiloids and resemble straight shells of orthocerids and pseudorthocerids, in which the colour pattern consists of straight colour bands. Consequently the shell shape as well as the colour pattern should be regarded as adaptive convergence with orthocerids and pseudorthocerids. It supports the hypothesis that colour pattern functioned as camouflage and its evolution was under adaptive control.
dcterms:title
Minute Silurian oncocerid nautiloids with unusual colour patterns Minute Silurian oncocerid nautiloids with unusual colour patterns
skos:prefLabel
Minute Silurian oncocerid nautiloids with unusual colour patterns Minute Silurian oncocerid nautiloids with unusual colour patterns
skos:notation
RIV/00023272:_____/09:#0001101!RIV10-MK0-00023272
n3:aktivita
n12:P n12:Z
n3:aktivity
P(DE06P04OMG009), P(GA205/09/0260), P(GA205/09/0703), Z(MZP0002579801)
n3:cisloPeriodika
3
n3:dodaniDat
n8:2010
n3:domaciTvurceVysledku
n7:1089153
n3:druhVysledku
n14:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
326464
n3:idVysledku
RIV/00023272:_____/09:#0001101
n3:jazykVysledku
n6:eng
n3:klicovaSlova
Cephalopoda; Nautiloidea; taxonomy; colour pattern; shell size; shell malformation; Silurian
n3:klicoveSlovo
n11:Cephalopoda n11:shell%20size n11:Silurian n11:taxonomy n11:Nautiloidea n11:shell%20malformation n11:colour%20pattern
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[A6348367DD39]
n3:nazevZdroje
Acta Palaeontologica Polonica
n3:obor
n17:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n4:GA205%2F09%2F0703 n4:DE06P04OMG009 n4:GA205%2F09%2F0260
n3:rokUplatneniVysledku
n8:2009
n3:svazekPeriodika
54
n3:tvurceVysledku
Turek, Vojtěch Manda, Štěpán
n3:wos
000270574400013
n3:zamer
n15:MZP0002579801
s:issn
0567-7920
s:numberOfPages
10