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Blastozoa

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Journal Article
Journal: Paleobiology
Published: 01 May 2021
Paleobiology (2021) 47 (2): 221–235.
... (Sprinkle 1973 ); for example, Diploporita possess diplopores (Paul 1972 ) and rhombiferans possess rhombs (Sprinkle 1973 ), but recent work has determined that many of these structures appear multiple times within Blastozoa, making the features homoplastic rather than homologous (see Sheffield...
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Journal Article
Published: 10 May 2017
Journal of Paleontology (2017) 91 (4): 685–714.
...Ninon Allaire; Bertrand Lefebvre; Elise Nardin; Emmanuel L.O. Martin; Romain Vaucher; Gilles Escarguel Abstract The genus Rhopalocystis (Eocrinoidea, Blastozoa) is characterized by both a short stratigraphic range (Fezouata Shale, middle Tremadocian to middle Floian, Lower Ordovician) and a reduced...
Journal Article
Published: 03 March 2016
Geological Magazine (2017) 154 (3): 465–475.
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Journal Article
Published: 01 January 2014
Journal of Paleontology (2014) 88 (1): 179–186.
..., but are not found on microbioherms. 18 7 2013 Copyright © 2014, The Paleontological Society 2014 D iploporite “cystoids” (Echinodermata, Blastozoa) are relatively rare in the Silurian of North America, where non-gomphocystitid diploporites are restricted exclusively to the Wenlock age...
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Journal Article
Published: 01 November 2012
Journal of Paleontology (2012) 86 (6): 956–972.
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Journal Article
Published: 01 March 1993
Journal of Paleontology (1993) 67 (2): 309.
Image
Echinoderm phylogenetic hypotheses with crinoids and <b>Blastozoa</b> separate. A:...
in > Geology
Published: 01 May 2016
Figure 2. Echinoderm phylogenetic hypotheses with crinoids and Blastozoa separate. A: Crinoids derived from edrioasteroids separately from blastozoans ( Guensburg and Sprinkle, 2001 , 2009 ). B: Crinoids more closely related to other living echinoderm clades than to blastozoans ( David et al
Image
Echinoderm phylogenetic hypotheses with crinoids and <b>Blastozoa</b> in a single ...
in > Geology
Published: 01 May 2016
Figure 3. Echinoderm phylogenetic hypotheses with crinoids and Blastozoa in a single clade. A: Paul and Smith (1984) . B: Sumrall (1997) ; note terminal taxon, Crinozoa, includes crinoids, paracrinoids, glyptocystitids, blastoids, and other Blastozoa.
Journal Article
Journal: Paleobiology
Published: 01 May 2021
Paleobiology (2021) 47 (2): f1–f4.
... Estimating dispersal and evolutionary dynamics in diploporan blastozoans (Echinodermata) across the great Ordovician biodiversi cation event Adriane R. Lam, Sarah L. Shef eld, and Nicholas J. Matzke Paleobiogeography, paleoecology, diversity, and speciation patterns in the Eublastoidea (Blastozoa...
Journal Article
Journal: Geology
Published: 01 May 2016
Geology (2016) 44 (5): 379–382.
...Figure 2. Echinoderm phylogenetic hypotheses with crinoids and Blastozoa separate. A: Crinoids derived from edrioasteroids separately from blastozoans ( Guensburg and Sprinkle, 2001 , 2009 ). B: Crinoids more closely related to other living echinoderm clades than to blastozoans ( David et al...
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Journal Article
Published: 10 May 2017
Journal of Paleontology (2017) 91 (4): 579–581.
.... References Allaire N. , Lefebvre B. , Nardin E. , Martin E.L.O. , Vaucher R. , and Escarguel G. , 2017 , Morphological disparity and systematic revision of the eocrinoid genus Rhopalocystis (Echinodermata, Blastozoa) from the Lower Ordovician of the central...
Journal Article
Published: 01 January 2015
Journal of Paleontology (2015) 89 (1): 189–193.
...., 2012 ). Subphylum Blastozoa Sprinkle, 1973 Class Eocrinoidea Jaekel, 1918 Llanocystis wilbernsensis n. gen. n sp. from the Late Cambrian (Furongian) Point Peak Shale Member, Wilberns Formation, central Texas. Same as the species by monotypy. The name...
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Journal Article
Journal: Geology
Published: 01 February 2001
Geology (2001) 29 (2): 131–134.
... Pelmatozoa. Later reorganizations recognized two monophyletic clades, the subphyla Crinozoa and Blastozoa ( Sprinkle, 1973 ); the new information here strongly supports this latter interpretation. The Early Ordovician age of the fossils and their plesiomorphic calyx and ambulacral morphology suggest...
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Journal Article
Published: 01 March 2021
Journal of Paleontology (2021) 95 (2): 320–326.
...., Paleocommunities: A Case Study from the Silurian and Lower Devonian : Cambridge , Cambridge University Press , p. 638 – 783 . Frest , T.J. , Strimple , H.L. , and Paul , C.R.C. , 2011 , The North American Holocystites fauna (Echinodermata, Blastozoa: Diploporita): paleobiology...
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Journal Article
Published: 01 July 2019
Journal of Paleontology (2019) 93 (4): 740–752.
... of Sciences of the United States of America , v. 89 , p. 7325 – 7329 . Frest , T.J. , Strimple , H.L. , and Paul , C.R.C. , 2011 , The North American Holocystites fauna (Echinodermata: Blastozoa: Diploporita): paleobiology and systematics : Bulletins of American Paleontology , v...
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Journal Article
Published: 10 May 2017
Journal of Paleontology (2017) 91 (4): 662–671.
... The Paleontological Society. All rights reserved Blastoids are the longest lived and most diverse members of the Blastozoa, a major component of the Great Ordovician Biodiversification Event (Sprinkle and Guensburg, 2004 ). They are important components of evolving Paleozoic echinoderm communities, which...
Journal Article
Published: 28 April 2015
Journal of Paleontology (2015) 89 (2): 366–368.
... Stage 7 (Guzhangian) to Stage 5. It increases the diversity of echinoderms in this well-known fossil-Lagerstätte, provides the oldest evidence of columnal-bearing eocrinoids from Laurentia, and further documents the cosmopolitan distribution of middle Cambrian echinoderm clades. Subphylum Blastozoa...
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Journal Article
Published: 01 September 2001
Journal of Paleontology (2001) 75 (5): 985–992.
... concerning the diagnostic characteristics of the clades of flattened Blastozoa, a general review of these clades follows. In particular, major differences occur in thecal construction, ambulacral arrangement, stem development, and plane of thecal flattening ( Fig. 1 ). Cardiocystitids are a clade...
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Journal Article
Journal: Paleobiology
Published: 01 January 2000
Paleobiology (2000) 26 (4): 529–555.
... of elements of the water vascular system. Stems, arms, and brachioles are particularly important structures in two major echinoderm clades, the Blastozoa and Crinozoa. We accept the subphylum Blastozoa in the sense of Sprinkle (1973) , who included in this clade all echinoderms bearing brachioles...
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Journal Article
Journal: Paleobiology
Published: 01 May 2021
Paleobiology (2021) 47 (2): 198–220.
..., with deep nodes in the Early Ordovician, indicating Baltica may also be a place of major evolutionary radiations for this group. Additional occurrence data across Blastozoa will allow for increased division of areas to more finely determine the origins for this clade. The first documented fossil occurrences...
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