-
Paracrinoidea is an
extinct class of
blastozoan echinoderms. They
lived in
shallow seas
during the
Early Ordovician through the
Early Silurian. While...
-
rather than arms, only
Crinoidea and
Paracrinoidea remained within Crinozoa.
Recent cladistic work has
placed Paracrinoidea under Blastozoa,
although some sources...
- Rhombifera, Diploporita, Coronoidea, Blastoidea, Parablastoidea, and
Paracrinoidea. They may also be the
progenitors of the cystoids, who are believed...
-
class Parablastoidea† Hudson, 1907
class Blastoidea† Say, 1825
class Paracrinoidea† Regnéll, 1945
class Crinoidea Miller, 1821
Subphylum Asterozoa Zittel 1895...
-
Rhombifera (Ordovician - Devonian)
class Diploporita (Ordovician - Devonian)
class Blastoidea (Ordovician - Permian)
class Paracrinoidea (Ordovician-Silurian)...
- This List of
echinoderm orders concerns the
various classes and
orders into
which taxonomists categorize the
roughly 7000
extant species as well as the...
-
phylogenetic relationships and
morphological diversity of
members of
Paracrinoidea is
published by
Limbeck et al. (2024). García-Penas et al. (2024) provide...
- †Simonkovicrinida -
single genus †Simonkovicrinus
order †Ascocystitida
class †
Paracrinoidea -
traditionally within the
Crinozoa (or less
commonly within the Blastozoa...
