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Blastoids (class
Blastoidea) are an
extinct type of
stemmed echinoderm,
often referred to as sea buds. They
first appear,
along with many
other echinoderm...
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Blastoidea...
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Subphylum Pelmatozoa Leuckart, 1848
class Cystidea† von Buch, 1844
class Blastoidea† Say, 1825
sensu extenso class Crinoidea Miller, 1821
class Edrioasteroidea†...
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ancestral to six
other classes: Rhombifera, Diploporita, Coronoidea,
Blastoidea, Parablastoidea, and Paracrinoidea. They may also be the
progenitors of...
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Rhombifera (Ordovician - Devonian)
class Diploporita (Ordovician - Devonian)
class Blastoidea (Ordovician - Permian)
class Paracrinoidea (Ordovician-Silurian)...
- The
Pitkin Formation, or
Pitkin Limestone, is a
fossiliferous geologic formation in
northern Arkansas that
dates to the
Chesterian Series of the late Mississippian...
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Scientific classification Kingdom:
Animalia Phylum:
Echinodermata class:
Blastoidea Order:
Spiraculata Family:
Pentremitidae Genus:
Pentremites Species Pentremites...
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Scientific classification Kingdom:
Animalia Phylum:
Echinodermata class:
Blastoidea Order:
Spiraculata Family:
Schizoblastidae Genus:
Deltoblastus Fay 1961...
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classification Domain:
Eukaryota Kingdom:
Animalia Phylum:
Echinodermata class: †
Blastoidea Order: †Spiraculata Genus: †Cryptoblastus Etherridge, Jr. & Carpender...
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Scientific classification Domain:
Eukaryota Kingdom:
Animalia Phylum:
Echinodermata class: †
Blastoidea Order: †Spiraculata Jaekel, 1918
Genera See text...
