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Cornulites celatus

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Journal Article

ENDOBIOTIC CORNULITIDS IN UPPER ORDOVICIAN TABULATE CORALS AND STROMATOPOROIDS FROM ANTICOSTI ISLAND, QUEBEC Available to Purchase

OWEN A. DIXON
Published: 01 May 2010
Journal of Paleontology (2010) 84 (3): 518–528.
DOI: https://doi.org/10.1666/09-129.1
...OWEN A. DIXON Abstract Conoidal shells of Cornulites celatus n. sp. occur commonly within host coralla of Propora conferta Milne-Edwards and Haime, 1851 , sensu lato, from the Laframboise Member of the Ellis Bay Formation (Ashgill: Upper Ordovician) at Pointe Laframboise on western Anticosti Island...
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Figure2—Cornulites celatus n. sp. in coralla of Propora confertaMilne-Edwards and Haime, 1851, sensu lato, from the Upper Ordovician Ellis Bay Formation. 1–3, holotype GSC 133548: 1, sub-horizontal longitudinal section of shell from septate proximal end (left), through open body chamber, to aperture (right) enclosed by coral skeleton formed after death of tube former; numbered brackets mark areas enlarged below; 2, 3, lateral walls of body chamber showing cellular structure of microlamellar inner layer (L) with acute interior annular crests (AC), and compact prismatic outer layer (P) with acute surface growth ridges inclined toward aperture. 4, 5, paratypes GSC 133549a–c: 4, slightly oblique transverse sections of mature stages of three shells (a–c) and of juvenile stages of three others (unlabelled, above a), with evidence of mutual growth interference between cornulitids and host coral: corallites show termination beneath, deflection around, or appearance by coenenchymal increase above the cornulitid shell; 5, enlargement of area outlined in 4 showing cellular microlamellar layer (above arrows) of shell b expanded directly across empty coral calices and draped over projecting calice rims; prismatic outer layer (P) occurs upward from lateral margins of shell. 6–8, paratypes GSC 133550a–f, h, i: 6,7, transverse sections of mature portions of six shells (a–f) with sediment (dark) partly filling body chambers; two juvenile shells on dorsal surface of shell c (h, i, enlarged in Fig. 5.3, 5.4), two other juveniles (unlabelled, above shell b); area of shell f outlined in 7 is enlarged in Fig. 5.1, 5.2; 8, enlargement of area of shell e outlined in 7, showing uncommon irregular re-entrants (arrow) in top of coral skeleton beneath cornulitid shell, possibly representing dissolution by the cornulitids or by microborers. All thin section images viewed in plane polarized light

Figure 2 — Cornulites celatus n. sp. in coralla of Propora conferta Mil... Available to Purchase

Published: 01 May 2010
Figure 2 — Cornulites celatus n. sp. in coralla of Propora conferta Milne-Edwards and Haime, 1851 , sensu lato, from the Upper Ordovician Ellis Bay Formation. 1–3 , holotype GSC 133548: 1 , sub-horizontal longitudinal section of shell from septate proximal end (left), through open body
Image
Figure3—Vertical longitudinal section of Cornulites celatus n. sp. in corallum of Paleofavosites sp. (paratype GSC 133552) from Upper Ordovician Ellis Bay Formation. 1, Conical shell with septate apical portion (left), open body chamber and aperture free at corallum surface (right); numbered brackets mark areas enlarged below. 2, 3, Dorsal shell wall showing rounded surface annulae developed where growth was “free-form,” i.e., minimally influenced by growth of coral host; granular sediment (dark) and void-filling calcite spar (clear) separate shell from overlying coral epitheca; larger annulae (A) with spacing similar to that of annular crests (AC) on shell interior; areas of prismatic calcite (arrows) that replace parts of microlamellar layer of shell indicate that prismatic microstructure is at least partly a secondary feature. 4, 5, Ventral shell wall with acute annular crests inside and less regular surface ornament where prismatic layer is thin or absent and microlamellar shell layer rests directly on underlying coral skeleton. All thin section images viewed in plane polarized light

Figure 3 —Vertical longitudinal section of Cornulites celatus n. sp. in ... Available to Purchase

Published: 01 May 2010
Figure 3 —Vertical longitudinal section of Cornulites celatus n. sp. in corallum of Paleofavosites sp. (paratype GSC 133552) from Upper Ordovician Ellis Bay Formation. 1 , Conical shell with septate apical portion (left), open body chamber and aperture free at corallum surface (right
Image
Figure5—Wall microstructure of shells of Cornulites celatus n. sp. in a corallum of Propora conferta s.l. from the Upper Ordovician Ellis Bay Formation. 1, oblique section of shell wall of paratype GSC133550f, with acute growth ridges (projecting upward toward right) on outer surface of prismatic layer; outlined area enlarged in 2, showing clearly demarcated prismatic (P) and microlamellar (L) layers; 3, transverse sections of juvenile stages of two shells with prismatic outer layers attached to dorsal surface of larger mature shell c (paratypes GSC133550c, h, i); central area is enlarged in 4. 5–8, adjacent parts (5, 7) of longitudinal section of dorsal shell wall near distal end of septate shell (paratype GSC 133550j): body chamber begins to right of septum (S); external surface relief on prismatic layer varies from subdued, fine, irregular growth ridges (5) to acute, inclined growth ridges (7); outlined areas in 5 and 7 are enlarged in 6 and 8. Thin section images viewed in plane polarized light (1, 3, 5, 7) and between crossed polars (2, 4, 6, 8)

Figure 5 —Wall microstructure of shells of Cornulites celatus n. sp. in ... Available to Purchase

Published: 01 May 2010
Figure 5 —Wall microstructure of shells of Cornulites celatus n. sp. in a corallum of Propora conferta s.l. from the Upper Ordovician Ellis Bay Formation. 1 , oblique section of shell wall of paratype GSC133550f, with acute growth ridges (projecting upward toward right) on outer surface
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Table 1 —Stratigraphic setting of endobiotic cornulitids on Anticosti Isla... Available to Purchase

Published: 01 May 2010
Table 1 —Stratigraphic setting of endobiotic cornulitids on Anticosti Island. Cornulites celatus n. sp. is known principally in coralla of Propora conferta s.l. from the Laframboise Member of the Ellis Bay Formation ( Appendix 1 , Locality 4a); other endobiotic cornulitids are known from
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Figure4—Longitudinal costae and surface annulae on shells of Cornulites celatus n. sp. in coralla of Propora conferta s.l. from Upper Ordovician Ellis Bay Formation. 1, transverse section of paratype GSC 133550g with outlined area enlarged in 2; costae (C) on prismatic layer (P) across dorsal surface of shell; microlamellar layer (L). 3, oblique section of paratype GSC 133551 with tangential intersections of several surface annulae (A); area enlarged in 4 shows tangential intersections of several costae perpendicular to annulae; faint sub-horizontal lines within prismatic calcite of annulus (A in 4) interpreted as growth increments, seen in other specimens to project into growth ridges on shell exteriors (e.g., Fig. 5.1, 5.7). Cellulose acetate peels viewed in plane polarized light

Figure 4 —Longitudinal costae and surface annulae on shells of Cornulites... Available to Purchase

Published: 01 May 2010
Figure 4 —Longitudinal costae and surface annulae on shells of Cornulites celatus n. sp. in coralla of Propora conferta s.l. from Upper Ordovician Ellis Bay Formation. 1 , transverse section of paratype GSC 133550g with outlined area enlarged in 2 ; costae (C) on prismatic layer (P) across
Journal Article

TENTACULITOID TUBEWORMS AS ENDOBIOTIC SYMBIONTS OF PALEOZOIC CORALS AND SPONGES Available to Purchase

OLEV VINN
Journal: PALAIOS
Published: 01 September 2016
PALAIOS (2016) 31 (9): 440–446.
DOI: https://doi.org/10.2110/palo.2016.034
.... 3.— Oblique section of Cornulites aff. celatus in Protoheliolites dubius showing changes in host coral morphology around a cornulitid from the Adila Formation, Katian, Vormsi Island, Estonia (GIT 520-140-1). In crinoids, cornulitid symbionts are found partially to almost completely...
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Oblique section of Cornulites aff. celatus in Protoheliolites dubius showing changes in host coral morphology around a cornulitid from the Adila Formation, Katian, Vormsi Island, Estonia (GIT 520-140-1).

Oblique section of Cornulites aff. celatus in Protoheliolites dubius ... Available to Purchase

Published: 01 September 2016
Fig. 3.— Oblique section of Cornulites aff. celatus in Protoheliolites dubius showing changes in host coral morphology around a cornulitid from the Adila Formation, Katian, Vormsi Island, Estonia (GIT 520-140-1).
Journal Article

SYMBIOSIS OF CORNULITIDS AND BRYOZOANS IN THE LATE ORDOVICIAN OF ESTONIA (BALTICA) Available to Purchase

OLEV VINN, ANDREJ ERNST, URSULA TOOM
Journal: PALAIOS
Published: 24 July 2018
PALAIOS (2018) 33 (7): 290–295.
DOI: https://doi.org/10.2110/palo.2018.018
... of North America, but they are not yet described ( Wilson 2014 ). The earliest hitherto described endobiotic cornulitid symbionts occur in the latest Katian heliolitid corals of Estonia ( Vinn and Mõtus 2012 ). In the late Katian of Estonia Cornulites aff. celatus formed two symbiotic associations...
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All reported occurrences of intergrowth associations between stromatoporoid... Available to Purchase

Published: 01 November 2022
) Ecclimadictyon sp. (possibly Ecclimadictyon anticostiense Nestor, Copper, and Stock, 2010 ) Cornulites celatus Dixon, 2010 (TW) Dixon, 2010
Journal Article

Cornulitid tubeworms and other calcareous tubicolous organisms from the Hirmuse Formation (Katian, Upper Ordovician) of northern Estonia Open Access

Olev Vinn, Anna Madison, Mark A. Wilson, Ursula Toom
Published: 01 January 2023
Journal of Paleontology (2023) 97 (1): 38–46.
DOI: https://doi.org/10.1017/jpa.2022.89
... endobiotic cornulitid and Cornulites sp. aff. Cornulites celatus (Cornulitida, Tentaculita) from the Katian of Vormsi Island, Estonia : GFF , v. 134 , p. 3 – 6 , https://doi.org/10.1080/11035897.2011.647067 . Vinn , O...
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Journal Article

EARLY SYMBIOTIC INTERACTIONS IN THE CAMBRIAN Available to Purchase

OLEV VINN
Journal: PALAIOS
Published: 01 April 2017
PALAIOS (2017) 32 (4): 231–237.
DOI: https://doi.org/10.2110/palo.2016.092
... in the Furongian of Baltica, but probably continued into the Tremadocian ( Walossek and Müller 1994 ). This association has moderate preservation potential and occurs in localities with Orsten preservation. Marcusodictyon encrusts shell exteriors of the lingulate brachiopod Schmidtites celatus ( Vinn...
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Rise of clathrodictyid stromatoporoids during the Great Ordovician Biodiversification Event: insights from the Upper Ordovician Xiazhen Formation of South China Available to Purchase

Juwan Jeon, Kun Liang, Stephen Kershaw, Jino Park, Mirinae Lee, Yuandong Zhang
Published: 01 November 2022
Journal of Paleontology (2022) 96 (6): 1285–1317.
DOI: https://doi.org/10.1017/jpa.2022.36
...) Ecclimadictyon sp. (possibly Ecclimadictyon anticostiense Nestor, Copper, and Stock, 2010 ) Cornulites celatus Dixon, 2010 (TW) Dixon, 2010 ...
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View PDF for article title, Rise of clathrodictyid stromatoporoids during the Great Ordovician Biodiversification Event: insights from the Upper Ordovician Xiazhen Formation of South China
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