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![Figure 17 —Geographic distribution of Maastrichtian and Danian <span class="search-highlight">Spatangoida</span>...]()
![Figure 3. Disparity of the order <span class="search-highlight">Spatangoida</span> during the Cretaceous: influe...]()
![Figure 4. Diversity patterns of the order <span class="search-highlight">Spatangoida</span>. A, Number of genera...]()
![Figure 5. Disparity of the order <span class="search-highlight">Spatangoida</span> during the Cretaceous: influe...]()
![Figure 6. Disparity of the order <span class="search-highlight">Spatangoida</span> during the Cretaceous: influe...]()
![Figure 7. Disparity of the order <span class="search-highlight">Spatangoida</span> during the Cretaceous: effect...]()
![Figure 6. The origin of the orders Holasteroida and <span class="search-highlight">Spatangoida</span> against th...]()
![Figure 7. Plastral disparity for the superorder Atelostomata and the order...]()
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![Echinoid apical plating and associate graphical representations. A, Two hig...]()
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![Figure 8. Nonplastral disparity for the superorder Atelostomata and the or...]()
![Figure 1. Stratigraphic and phylogenetic framework for the irregular echin...]()
![Rose diagrams showing contact frequency between pairs of apical plates in f...]()
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![Table 2. Disparity and the origin of the orders Holasteroida and Spatangoi...]()
1-20 OF 49 RESULTS FOR
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Journal Article
Redefinition of the genera Opissaster Pomel, 1883 and Gregoryaster Lambert, 1907 (Order Spatangoida, Suborder Paleopneustina, Family Schizasteridae), from the Oligo-Miocene of Malta, Algeria and Sardinia
Journal: Italian Journal of Geosciences
Publisher: Societa Geologica Italiana
Published: 01 October 2022
Italian Journal of Geosciences (2022) 141 (3): 426–448.
... Limestone Member (LGLM/LGL), the Lower Main Phosphorite Conglomerate Bed (LMPC Bed), and the basal part of the Middle Globigerina Limestone Member (MGLM) ( Gatt, 2006a , b ) (see Fig. 3 ). Order Spatangoida L. Agassiz, 1840 Studied material. Eight specimens: MNAZ OR3955a; MNAZ OR4698a, b, c, d...
FIGURES
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Journal Article
Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
Journal: Paleobiology
Publisher: Paleontological Society
Published: 01 January 2000
Paleobiology (2000) 26 (1): 56–079.
..., with contrasts among the sister groups Holasteroida and Spatangoida, their paraphyletic stem group Disasteroida, and the more inclusive clade, the superorder Atelostomata. A 38-dimensional landmark-based morphospace representing test architecture was used to describe morphological evolution in terms of total...
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Figure 17 —Geographic distribution of Maastrichtian and Danian Spatangoida...
in UPPER CRETACEOUS–PALEOCENE ECHINOIDS FROM NORTHERN PATAGONIA, ARGENTINA
> Journal of Paleontology
Published: 01 November 2005
Figure 17 —Geographic distribution of Maastrichtian and Danian Spatangoida. Map base modified from Smith et al. (1981) and Scotese et al. (1988)
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Figure 3. Disparity of the order Spatangoida during the Cretaceous: influe...
in Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
> Paleobiology
Published: 01 January 2004
Figure 3. Disparity of the order Spatangoida during the Cretaceous: influence of timescale. A, Use of amalgamated stages. B, Stage-level analysis. Taxa are sampled at genus level, one species representing each genus. Range-through method is applied when time range of genus exceeds the duration
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Figure 4. Diversity patterns of the order Spatangoida. A, Number of genera...
in Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
> Paleobiology
Published: 01 January 2004
Figure 4. Diversity patterns of the order Spatangoida. A, Number of genera at subepoch resolution. B, Number of genera at stage resolution. C, Number of species at subepoch resolution. D, Number of species at stage resolution
Image
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Figure 5. Disparity of the order Spatangoida during the Cretaceous: influe...
in Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
> Paleobiology
Published: 01 January 2004
Figure 5. Disparity of the order Spatangoida during the Cretaceous: influence of timescale. A, Use of amalgamated stages. B, Stage-level analysis. Taxa are sampled at species level, with sampling of 30–50% of species known per genus, and one to four specimens representing each species. Range
Image
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Figure 6. Disparity of the order Spatangoida during the Cretaceous: influe...
in Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
> Paleobiology
Published: 01 January 2004
Figure 6. Disparity of the order Spatangoida during the Cretaceous: influence of morphological descriptor and statistical treatment. Genus-level taxonomic sampling was used throughout. One species is taken as representative for each genus. Range-through method is applied, at stage-level temporal
Image
030_0652_ATRODE_2.0.CO;2/3/s_i0094-8373-030-04-0652-f07.jpeg?Expires=2147483647&Signature=HLPHHYGP3AIjvNaXG13drPVqp1PKi8WtD7jDKKVmyIYBszQotcwzXCTzKkUoH3CKR-y5DbQwTp5mmwkkNoZlXMCmd6c~tB2QudcPtInaEjFopvaLhRqYTt-do4SuabRSIE1Nn4EX63syrtvLFBrCQvcEoxy6JKBtyxjt0nr56FooI2lbRmAV6Hp81E7j8bEqJJlfCB034Sx-dLjC~POP8EAiuQdXX~ioGYGjsGSzqBDRZiZoFCvhyIXBe7DkS0YAonwOQaN38rqnuTe8VfOzCa2sp9LeGTTX7uzsTBh3RvMT-8SAFm2OVMmSRchVI-kDPEw1RIxyMXQNVFUWm9uGTg__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 7. Disparity of the order Spatangoida during the Cretaceous: effect...
in Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
> Paleobiology
Published: 01 January 2004
Figure 7. Disparity of the order Spatangoida during the Cretaceous: effect of reference empirical morphospace. A, Pattern of spatangoid disparity calculated from a data set including the orders Disasteroida, Holasteroida, and Spatangoida (data from Eble 2000a ). B, Pattern of spatangoid disparity
Image
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Figure 6. The origin of the orders Holasteroida and Spatangoida against th...
in Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
> Paleobiology
Published: 01 January 2000
Figure 6. The origin of the orders Holasteroida and Spatangoida against the backdrop of ancestral disasteroid disparity. Figure shows a frequency distribution of bootstrapped total disasteroid disparity (1000 iterations), against which the disparity of several samples is compared. The 5 rightmost
Image
026_0056_CEFISG_2.0.CO;2/3/s_i0094-8373-026-01-0056-f07.jpeg?Expires=2147483647&Signature=jruGi4t78RFK99V4uZ48nOw6mqOVmTidMt77PPoc94qaA-AQDGv247b0LCC8pMGt8D-SjX5WcQJ3gXmB1ujd--tljwbz4Ui7WjAcXfjkvtKQzB2oMRoDdiD0IfASv0iHrN3AK7VSwGVD0iKVcQCchGCEDTyv0bQwmApUonMrP6UOHBsiGwq2tGHc8sK3YJcqBjR8TFC0cx4Ya8rPXJMEMfcuna16v4p6c37JbouJf0AeDnCVqLsdU6jxolJqXqQFGHBKqmol-7Bwu1hA7O8AgJ6ZvasigLxV7dsaTkLQi7iPM21nVYNsgr4LA4QJgr77dNqGbGWCMH1c~20G1xGSrw__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 7. Plastral disparity for the superorder Atelostomata and the order...
in Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
> Paleobiology
Published: 01 January 2000
Figure 7. Plastral disparity for the superorder Atelostomata and the orders Disasteroida, Holasteroida, and Spatangoida. Disparity through time was calculated from partitioning of character matrix into character complexes with different functional and developmental implications (see text
Journal Article
Empirical and theoretical study of atelostomate (Echinoidea, Echinodermata) plate architecture: using graph analysis to reveal structural constraints
Journal: Paleobiology
Publisher: Paleontological Society
Published: 04 May 2015
Paleobiology (2015) 41 (3): 436–459.
.... A, Two highly
contrasting apical systems observed in regular echinoids (left) and Spatangoida
(right). Left: Example of the regular echinoid Diplocidaris gigantea (L Agassiz) – (after Kier 1974 : Fig. 42A).
Genital plates (dark gray) are labeled G1 to G5...
FIGURES
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Journal Article
Phylogeny and biogeography of some Cretaceous spatangoid echinoids with special emphasis on taxa from the Western Interior Seaway
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 May 2021
Journal of Paleontology (2021) 95 (3): 613–623.
...Steven Byrum; Bruce S. Lieberman Abstract Members of the echinoid order Spatangoida, a highly diverse and abundant marine invertebrate clade, were important denizens of the Cretaceous Western Interior Seaway (WIS), an epicontinental seaway that divided North America in two during an interval...
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Image
Echinoid apical plating and associate graphical representations. A, Two hig...
in Empirical and theoretical study of atelostomate (Echinoidea, Echinodermata) plate architecture: using graph analysis to reveal structural constraints
> Paleobiology
Published: 04 May 2015
Figure 2 Echinoid apical plating and associate graphical representations. A, Two highly
contrasting apical systems observed in regular echinoids (left) and Spatangoida
(right). Left: Example of the regular echinoid Diplocidaris gigantea (L Agassiz) – (after Kier
Journal Article
Assessing the robustness of disparity estimates: the impact of morphometric scheme, temporal scale, and taxonomic level in spatangoid echinoids
Journal: Paleobiology
Publisher: Paleontological Society
Published: 01 January 2004
Paleobiology (2004) 30 (4): 652–665.
...Figure 3. Disparity of the order Spatangoida during the Cretaceous: influence of timescale. A, Use of amalgamated stages. B, Stage-level analysis. Taxa are sampled at genus level, one species representing each genus. Range-through method is applied when time range of genus exceeds the duration...
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Figure 8. Nonplastral disparity for the superorder Atelostomata and the or...
in Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
> Paleobiology
Published: 01 January 2000
Figure 8. Nonplastral disparity for the superorder Atelostomata and the orders Disasteroida, Holasteroida, and Spatangoida. Nonplastral character complex corresponds to ambulacral, ambitus (including frontal furrow), and periproct landmarks. Same conventions as in Figure 7 .
Journal Article
Echinoids of the Mesozoic families Collyritidae D'Orbigny, 1853 and Disasteridae Gras, 1848
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 September 1968
Journal of Paleontology (1968) 42 (5): 1272–1288.
...; Cassiduloida; Disasteroida, new; Holasteroida; Pourtalesioida, new; Spatangoida. Disasteroida includes the families: Pygorhytidae; Collyritidae; Disasteridae; Tithoniidae, new; Acrolusiidae, new. GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index...
Image
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Figure 1. Stratigraphic and phylogenetic framework for the irregular echin...
in Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
> Paleobiology
Published: 01 January 2000
Figure 1. Stratigraphic and phylogenetic framework for the irregular echinoid orders Holasteroida, Spatangoida, and Disasteroida. Disasteroids appear in the Middle Jurassic and range to the mid-Cretaceous. Spatangoids and holasteroids appear coevally in the Early Cretaceous (Berriasian) and range
Image
Rose diagrams showing contact frequency between pairs of apical plates in f...
in Empirical and theoretical study of atelostomate (Echinoidea, Echinodermata) plate architecture: using graph analysis to reveal structural constraints
> Paleobiology
Published: 04 May 2015
Figure 6 Rose diagrams showing contact frequency between pairs of apical plates in five
echinoid groups: the regular echinoids (A), basal Irregularia (B), basal
Atelostomata (C), Holasteroida (D), and Spatangoida (E). Bold and circled plate
numbers
Journal Article
Mass occurrence of echinoids in an Oligocene hydrocarbon-seep limestone from the Olympic Peninsula, Washington State, USA
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 10 March 2023
Geological Magazine (2023) 160 (5): 941–954.
... Spatangoida Agassiz, 1840. Unfortunately, a complete taxonomic description is not possible because the specimens can only be studied in cross-sections. The assignment to Spatangoida is based on the cross-section of the corona (Fig. 6 a), which revealed the presence of aboral petal grooves (Fig. 6 b...
FIGURES
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Table 2. Disparity and the origin of the orders Holasteroida and Spatangoi...
in Contrasting evolutionary flexibility in sister groups: disparity and diversity in Mesozoic atelostomate echinoids
> Paleobiology
Published: 01 January 2000
Table 2. Disparity and the origin of the orders Holasteroida and Spatangoida. Shown are p -values for various comparisons to the distribution of resampled total disasteroid disparities, generated by 1000 bootstrap replications. The disasteroid sample is dominated by Late Jurassic and Early
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