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isocrinids

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Journal Article
Published: 01 January 1994
Journal of Paleontology (1994) 68 (1): 135–141.
Journal Article
Journal: Paleobiology
Published: 01 February 2008
Paleobiology (2008) 34 (1): 22–34.
... “meadows” of sea lilies, close proximity of cidaroids to several upended isocrinids, a cidaroid perched over the distal end of the stalk of an upended isocrinid, and disarticulated crinoid cirri and columnals directly underneath a specimen of C. micans . Guts of two C. micans collected from the crinoid...
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Figure  2. Still frames showing cidaroids and <b>isocrinids</b>. A,  Calocidaris m...
Published: 01 February 2008
Figure 2. Still frames showing cidaroids and isocrinids. A, Calocidaris micans near the isocrinid Neocrinus decorus . B, C. micans near the isocrinid Endoxocrinus parrae . C, Two individuals of C. micans with crinoid stalk and cirral segments; E. parrae in the background. Length of C
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FIGURE 20 — Isselicrinus  is distinguished from other <b>isocrinids</b> by the pre...
in > PALAIOS
Published: 01 June 2005
FIGURE 20 — Isselicrinus is distinguished from other isocrinids by the preservation of complete noditaxes sticking subvertically in the sediment and by reduction of the cirri to three or two per nodal. (A) Stem segments are found in serial bundles in Japan (T. Oji, pers. comm., 2003). (B, C) Stem
Journal Article
Published: 01 May 2001
Journal of Paleontology (2001) 75 (3): 721–731.
...STEPHEN K. DONOVAN; CORNELIS J. VELTKAMP Abstract Fossil crinoids are described from the Lesser Antilles for the first time. Crinoids are now known to occur in the Miocene of Carriacou, the Grenadines (four species), and in the Eocene and Miocene of Barbados (three species). Taxa include: isocrinid...
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Journal Article
Journal: Geology
Published: 01 October 1997
Geology (1997) 25 (10): 903–906.
... of ophiuroids, which are rare in shallow water today, and isocrinid crinoids, which today occur only in the deep sea. The La Meseta Formation on Seymour Island, Antarctic Peninsula, represents an ecological anomaly: this deposit contains localized, autochthonous, dense assemblages of ophiuroids and isocrinids...
Series: GSA Memoirs
Published: 01 January 1993
DOI: 10.1130/MEM182-p125
... Nonechinoid echinoderms are poorly known from the fossil record of Jamaica and only occur as disarticulated plates. Only crinoid columnals have hitherto been reported. However, asteroid marginal ossicles and ophiuroid vertebral ossicles are also locally common. Three species of isocrinid...
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Figure  8. <b>Isocrinid</b> arm fragments extracted from  Histocidaris nuttingi . ...
Published: 01 February 2008
Figure 8. Isocrinid arm fragments extracted from Histocidaris nuttingi . Note the degree of articulation of brachials and pinnulars and the breakage pattern of the brachial in the upper left-hand corner of the photo. Scale bar, 0.5 mm
Journal Article
Published: 30 January 2015
Canadian Journal of Earth Sciences (2015) 52 (4): 235–243.
...., two additional distinctive crinoid column types, a poorly preserved asteroid, and an umbilical fragment of the cephalopod Stelckiceras . This is the first report of a Cretaceous isocrinid from North America. The echinoderm fossils are from the top of a succession of storm-deposited sandstones...
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Journal Article
Journal: PALAIOS
Published: 01 September 2010
PALAIOS (2010) 25 (9): 588–596.
... isocrinid have demonstrated that some can crawl relatively rapidly, perhaps in order to escape from benthic predators. Because the mechanics of crawling in stalked crinoids resemble the mechanics of swimming in comatulids, it is worth investigating whether a stalked crinoid would be capable of swimming...
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Journal Article
Journal: PALAIOS
Published: 01 January 2009
PALAIOS (2009) 24 (1): 70–73.
... supported by observations of extant isocrinids in modern deep-sea environments near the west end of Grand Bahama Island. In this paper, we report on stalks of crinoids from the Late Jurassic of south-central Poland, which co-occur with remains of cidaroids and show characteristic holes, bite marks...
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Journal Article
Journal: PALAIOS
Published: 01 February 1995
PALAIOS (1995) 10 (1): 87–95.
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Figure  5. Video evidence of interaction between a cidaroid and the isocrin...
Published: 01 February 2008
Figure 5. Video evidence of interaction between a cidaroid and the isocrinid Endoxocrinus parrae . In the frame, the white arrow points to a spine of the cidaroid, most of which is hidden behind the isocrinids in the foreground. The black arrow points to the distal end of the stalk
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Table  1 —Features of the articular facet in extant tropical western Atlant...
Published: 01 May 2001
Table 1 —Features of the articular facet in extant tropical western Atlantic isocrinid crinoids (mainly after Roux, 1977, table 2; Macurda and Roux, 1981)
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FIGURE 2 —Examples of various specimens of crinoids and echinoids found in ...
in > PALAIOS
Published: 01 January 2009
FIGURE 2 —Examples of various specimens of crinoids and echinoids found in the Kimmeridgian limestones at Małogoszcz (A) and Julianka (B–J). A) Lateral view of isocrinid pluricolumnal with small circular holes (arrows). B) Lateral view of isocrinid pluricolumnal with bite marks (arrows). C) Lateral
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Figure  6. A sequence of 35-mm photos showing an interaction between a cida...
Published: 01 February 2008
Figure 6. A sequence of 35-mm photos showing an interaction between a cidaroid and the isocrinid Cenocrinus asterius , near Discovery Bay, Jamaica. A, Approach. B, Encounter. C, Escape. Length of spines ∼ 150 mm. Photographs courtesy of Research Submersibles, Ltd. and M.-J. Bodden
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Table  3 —Recent and fossil stalked and holopodid crinoids (that is, ‘non-c...
Published: 01 May 2001
Table 3 —Recent and fossil stalked and holopodid crinoids (that is, ‘non-comatulids’) from the late Cenozoic of the Antillean region (modified and revised after Donovan, 2001, table 4). All are isocrinids apart from the bourgueticrinids and cyrtocrinids. Key: Mio = Miocene; Plio = Pliocene; Plei
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Figure  3 —Eocene crinoid columnals from Barbados.  1, 2,  hyocrinid sp. in...
Published: 01 May 2001
Figure 3 —Eocene crinoid columnals from Barbados. 1, 2, hyocrinid sp. indet., NMB M9981; 1, oblique view showing planar latus and articular facet, ×48; 2, articular facet, ×50. 3, isocrinid sp. indet., NMB M9980, articular facet, ×17. SE micrographs of specimens coated with 60 percent gold
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Figure  9. Diagrams summarizing the relationships and history of relevant g...
Published: 01 February 2008
. The approximate timing of the origin of (1,2) muscular arm articulations, flexible and motile cirri, and (3) stalk shedding are indicated. Non-monophyletic groups indicated by *. Numbers above crown-group crinoids indicate approximate number of species. Among extant taxa, only the comatulids and isocrinids
Journal Article
Journal: PALAIOS
Published: 23 December 2019
PALAIOS (2019) 34 (12): 652–656.
... isocrinids after the middle Cretaceous ( Whittle et al. 2018 ; Zamora et al. 2018 ), whereas isocrinids have almost disappeared from shallow water since middle Cretaceous in other part of the world ( Bottjer and Jablonski 1988 ). The present occurrence of isocrinids from Burmese amber strongly supports...
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