Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Extinct jawless fish
|
| gptkbp:bodyCovering |
Scales
Bony plates |
| gptkbp:characteristic |
Armored body
Had bony head shields Had gill openings Had paired fins in some groups Lacked jaws |
| gptkbp:class |
gptkb:fish
|
| gptkbp:diet |
Filter feeders
|
| gptkbp:discoveredBy |
19th century
|
| gptkbp:endangeredStatus |
Extinct
|
| gptkbp:etymology |
Greek for 'shell-skinned'
|
| gptkbp:firstAppearance |
gptkb:Ordovician_period
|
| gptkbp:fossilRange |
Ordovician to Devonian
|
| gptkbp:habitat |
Freshwater
Marine |
| https://www.w3.org/2000/01/rdf-schema#label |
Ostracoderms
|
| gptkbp:kingdom |
gptkb:Animalia
|
| gptkbp:lastAppearance |
gptkb:Devonian_period
|
| gptkbp:notableGroup |
gptkb:Anaspida
gptkb:Osteostraci gptkb:Heterostraci gptkb:Thelodonti |
| gptkbp:phylum |
gptkb:Chordata
|
| gptkbp:relatedTo |
gptkb:Placoderms
gptkb:Cyclostomes |
| gptkbp:reproduction |
unknown
|
| gptkbp:significance |
Early vertebrates
Predecessors to jawed vertebrates |
| gptkbp:subfamily |
gptkb:Vertebrata
|
| gptkbp:bfsParent |
gptkb:fish
|
| gptkbp:bfsLayer |
4
|