Image of Parascytoleptus tridens (Rathbun 1906)

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Axiidae Huxley 1879

extinction status

Paleobiology Database
extant
URI: http://eol.org/schema/terms/extant

Definition: This taxon is still in existence, as opposed to extinct.

Attribution: http://en.wikipedia.org/wiki/Extant_taxon

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first appearance

Paleobiology Database

155.7 million years ago

(max)
Paleobiology Database
kimmeridgian age
URI: http://resource.geosciml.org/classifier/ics/ischart/Kimmeridgian

Attribution: International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

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last appearance

Paleobiology Database
cenozoic era
URI: http://resource.geosciml.org/classifier/ics/ischart/Cenozoic

Attribution: International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

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motility

Paleobiology Database
actively mobile
URI: http://eol.org/schema/terms/activelyMobile

Definition: uses self-propelled locomotion to change location on a regular basis

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(adult)

number of fossil occurrences

Paleobiology Database

22

skeleton contains

Paleobiology Database
chitin
URI: http://purl.obolibrary.org/obo/CHEBI_17029

Definition: An aminoglycan consisting of beta-(1->4)-linked N-acetyl-D-glucosamine residues.

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