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gptkbp:instanceOf
|
extinct class of jawless fish
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|
gptkbp:class
|
gptkb:Osteostraci
|
|
gptkbp:describedYear
|
1868
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gptkbp:diet
|
filter feeder
detritivore
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|
gptkbp:discoveredBy
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gptkb:Lankester
|
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gptkbp:distinctiveFeature
|
bony head shield
dorsoventrally flattened body
jawless
paired pectoral fins
single external nostril
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gptkbp:distribution
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gptkb:Europe
gptkb:North_America
gptkb:Russia
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gptkbp:endangeredStatus
|
extinct
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gptkbp:eyeColor
|
dorsal
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gptkbp:firstAppearance
|
gptkb:Late_Silurian
|
|
gptkbp:fossilRange
|
gptkb:Devonian
gptkb:Silurian
|
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gptkbp:habitat
|
gptkb:marine
freshwater
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Osteostraci
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gptkbp:importantFor
|
early vertebrate evolution
evolution of paired fins
insight into jawless vertebrates
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|
gptkbp:kingdom
|
gptkb:Animalia
|
|
gptkbp:lastAppearance
|
gptkb:Late_Devonian
|
|
gptkbp:notableGenus
|
gptkb:Auchenaspis
gptkb:Cephalaspis
gptkb:Hemicyclaspis
gptkb:Tremataspis
|
|
gptkbp:notableSite
|
gptkb:Downtonian_beds
gptkb:Old_Red_Sandstone
|
|
gptkbp:order
|
gptkb:Cephalaspidida
|
|
gptkbp:phylum
|
gptkb:Chordata
|
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gptkbp:relatedTo
|
gptkb:Anaspida
gptkb:Gnathostomata
gptkb:Pteraspidomorphi
gptkb:Thelodonti
|
|
gptkbp:respiration
|
gill pouches
|
|
gptkbp:shape
|
flattened
|
|
gptkbp:size
|
up to 30 cm
|
|
gptkbp:skeletonType
|
cartilaginous with bony head shield
|
|
gptkbp:subfamily
|
gptkb:Vertebrata
|
|
gptkbp:tailLength
|
heterocercal
|
|
gptkbp:bfsParent
|
gptkb:Ostracoderms
gptkb:Cephalaspidomorphi
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gptkbp:bfsLayer
|
5
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