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Browse Items (2 total)
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TF0903 Irregular echinoid
Species
Praecursor
Stratigraphic Range
Cretaceous
Taxonomy
Phylum: EchinodermataClass: EchinoideaSubclass: IrregulariaOrder: SpatangoidaGenus: Micraster
Distinctive Features
Bilateral symmetryFive radial ambulacraPeristome (opening for mouth)…
TF0902 Irregular echinoid
Species
depressus Lestre
Stratigraphic Range
Jurassic
Taxonomy
Phylum: EchinodermataClass: EchinoideaSubclass: IrregulariaOrder: HolectypoidaGenus: Holectypus
Distinctive Features
Bilateral symmetryFive radial ambulacraSpine attachment scars…