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Diploporita

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Journal Article
Published: 01 July 2019
Journal of Paleontology (2019) 93 (4): 822–826.
... points of the morphology of the Cystidea : Journal of the Linnean Society (Zoology) , v. 34 , p. 1 – 52 . Gutiérrez-Marco , J.C. , 2000 . Revisión taxonómica de ‘ Echinosphaerites ’ murchisoni Verneuil y Barrande, 1855 (Echinodermata, Diploporita) del Ordovícico Medio centroibérico...
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Journal Article
Published: 01 July 2019
Journal of Paleontology (2019) 93 (4): 740–752.
... questions because no questions rooted in evolutionary theory can be answered in the absence of a phylogeny. Consequently, placing Diploporita into a phylogenetic framework is critical for understanding their paleobiology. Diploporitans have long been considered one of the most problematic groups...
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Journal Article
Published: 07 March 2017
Journal of Paleontology (2017) 91 (4): 755–766.
... that do not bear facets are not present, leaving only facetal plates A–E. Note the loss of A ambulacrum. Line drawing of Pustulocystis pentax Paul, 1971 (MUMG-T 226). Subphylum Blastozoa Sprinkle, 1973 Class Diploporita Müller, 1854 Superfamily Sphaeronitida Neumayr, 1889...
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Representative specimens within <span class="search-highlight">Diploporita</span>. <span class="search-highlight">Diploporita</span> encompasses wide m...
Published: 01 July 2019
Figure 1. Representative specimens within Diploporita. Diploporita encompasses wide morphological variability, likely indicating that the group is polyphyletic. ( 1 ) Eumorphocystis multiporata (Glyptosphaeritida), characterized by ambulacra that are erect distally and lie on biserial floor
Journal Article
Published: 01 November 2020
Journal of Paleontology (2020) 94 (6): 1089–1102.
... branching of the ambulacra. The ontogenetic sequence was triradiate, then lateral ambulacra bifurcated, and finally second brachioles developed. Positions of second brachioles of pentaradiate glyptocystitoids code as AR, BL, CR, DL, ER. Other examples of Lovén's Law occur in Diploporita, Ophiuroidea...
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Journal Article
Journal: Geology
Published: 01 May 2016
Geology (2016) 44 (5): 379–382.
... to the classes Asteroidea, Blastoidea, Crinoidea, Diploporita, Echinoidea, and Edrioasteroidea are used to assess the position of crinoids and blastozoans within competing echinoderm phylogenetic hypotheses. Fluorescence excitation-emission spectroscopy of organic molecules in fossil extracts are used to compare...
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Journal Article
Published: 01 November 2004
Journal of Paleontology (2004) 78 (6): 1154–1162.
... to communicate. In particular, many of the early echinoderm classes, including the Rhombifera, Diploporita, and Paracrinoidea, are informally known as cystoids [= blastozoans of Sprinkle (1973) or “cystoids sensu lato” of Paul (1988) , but broader than the class Cystoidea of Kesling (1967) ], a group...
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Strict consensus of the 246 most parsimonious trees, if the three groups (i...
Published: 01 July 2019
Figure 4. Strict consensus of the 246 most parsimonious trees, if the three groups (i.e., Sphaeronitida, Glyptosphaeritida, Asteroblastida) were forced to each be a clade, without forcing the three to also be contained within a larger Diploporita clade. The resulting tree had a length of 109, 10
Journal Article
Published: 01 March 2021
Journal of Paleontology (2021) 95 (2): 320–326.
... specimens limits the robustness of statistical analyses. This occurrence represents the first formal description of symbiotic pits on rhombiferans and indicates that at least four pelmatozoan classes (Crinoidea, Diploporita, Eocrinoidea, Rhombifera) were infested by pit-forming organisms. Symbiotic pits...
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Journal Article
Published: 01 January 2014
Journal of Paleontology (2014) 88 (1): 179–186.
... and reposited. Subphylum Blastozoa Sprinkle, 1973 Class Diploporita Müller, 1854 Superfamily Sphaeronitida Neumayr, 1889 Family Holocystitidae Miller, 1889 Subfamily Trematocystinae Frest and Strimple in Frest et al., 2011 Genus Paulicystis Frest and Strimple...
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Journal Article
Journal: Paleobiology
Published: 01 May 2021
Paleobiology (2021) 47 (2): 198–220.
... the paleobiogeography of extinct echinoderms to infer how they evolved and dispersed in response to major climatic perturbations. Of the blastozoan echinoderms, we primarily focus on the Diploporita in this study. Diploporitan echinoderms (Ordovician–Devonian) appeared in the fossil record in Lower Ordovician rocks...
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Journal Article
Published: 06 December 2017
Canadian Journal of Earth Sciences (2018) 55 (1): 1–7.
... Ordovician global warming-the Boda event . Geology , 33 : 405 – 408 . doi:10.1130/G21180.1 . Frest , T.J. , Strimple , H. , and Paul , C.R.C. 2011 . The North American Holocystites Fauna (Echinodermata: Blastozoa: Diploporita): paleobiology and systematics . Bulletins of American...
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Journal Article
Published: 19 September 2013
Geological Magazine (2014) 151 (4): 649–665.
... ). From Thomka & Brett (in press). Diploporita attachment structures encrustation Wenlock Holocystites fauna Diploporite ‘cystoids’ are a clade of early to middle Palaeozoic (Ordovician–Devonian) blastozoan echinoderms characterized by dipore-based respiratory structures...
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Diplopore-bearing taxa utilized within this phylogenetic analysis. The orig...
Published: 01 July 2019
within Diploporita Paleocontinent Aristocystites bohemicus Barrande, 1887 Sphaeronitida Gondwana Asteroblastus stellatus Eichwald, 1862 Asteroblastida Baltica Dactylocystis schmidti Jaeckel, 1899 Glyptosphaeritida Baltica Estonocystis antropoffi Jaekel, 1918
Journal Article
Published: 10 May 2017
Journal of Paleontology (2017) 91 (4): 604–617.
... Limestone (Middle Ordovician), Missouri : Journal of Paleontology , v. 56 , p. 358 – 370 . Frest T.J. , Strimple H.L. , and Paul C.R.C. , 2011 , The North American Holocystites fauna (Echinodermata, Blastozoa: Diploporita): paleobiology and systematics : Bulletins...
Journal Article
Published: 10 May 2017
Journal of Paleontology (2017) 91 (4): 579–581.
... of the Holocystitidae of North America (Diploporita: Echinodermata) based on universal elemental homology: Journal of Paleontology. Smith A.B. , and Benson R.B.J. , 2013 , Marine diversity in the geological record, its relationship to surviving bedrock area, lithofacies diversity and original marine...
Journal Article
Journal: Paleobiology
Published: 01 May 2021
Paleobiology (2021) 47 (2): 221–235.
... 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 and Sumrall...
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Journal Article
Published: 20 February 2017
Journal of Paleontology (2017) 91 (4): 582–603.
... structures occurred first. Furthermore, the loss was commonly at the junction with the theca, so that entire structures were lost immediately rather than being degraded bit by bit from their tips. For example, in the Diploporita, no sphaeronitid is known with ambulacral appendages preserved...
Journal Article
Published: 01 October 1999
Earth Sciences History (1999) 18 (2): 180–197.
..., Diploporita, and Echinoidea (Table 1), and indicate the full scope of their intended studies. Although some differences occur, the echinoderm classification presented in Austin and Austin was apparently the outline for the systematic portion of the entire planned monograph, “Austin’s Crinoidea.” Clearly, one...
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Journal Article
Published: 30 October 2017
Geological Magazine (2019) 156 (1): 147–171.
... ‘ Echinosphaerites ’ murchisoni Verneuil y Barrande, 1855 (Echinodermata, Diploporita) del Ordovícico Medio centroibérica (España) . Geogaceta 27 , 83 – 6 . Gutiérrez-Marco , J. C. & Colmenar , J. 2011 . Biostratigraphy of the genus Calix (Echinodermata, Diploporita) in the Middle...
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