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Aspidella

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Journal Article

Evidence for Cnidaria-like behavior in ca. 560 Ma Ediacaran Aspidella : REPLY

Latha R. Menon, Duncan McIlroy, Martin D. Brasier
Journal: Geology
Published: 01 March 2014
Geology (2014) 42 (3): e324.
DOI: https://doi.org/10.1130/G35387Y.1
... crescentic markings display raised margins and indications of typical Aspidella ornamentation; they bear no comparison to the amorphous, bulbous rugae illustrated. His lichen hypothesis has already been noted to lack evidential support from the fossil record ( Antcliffe and Hancy, 2013 ). We also rebut...
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Evidence for Cnidaria-like behavior in ca. 560 Ma Ediacaran Aspidella : COMMENT

Gregory J. Retallack
Journal: Geology
Published: 01 March 2014
Geology (2014) 42 (3): e323.
DOI: https://doi.org/10.1130/G34895C.1
...Gregory J. Retallack © 2014 Geological Society of America 2014 Menon et al. (2013) regard wrinkles at the base of discoid fossils ( Aspidella terranovica ) and deformation of laminae in cut slabs as evidence for upward migration of a cnidarian polyp in marine shales...
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Evidence for Cnidaria-like behavior in ca. 560 Ma Ediacaran Aspidella

Latha R. Menon, Duncan McIlroy, Martin D. Brasier
Journal: Geology
Published: 01 August 2013
Geology (2013) 41 (8): 895–898.
DOI: https://doi.org/10.1130/G34424.1
... animals at all, but land-based lichens and microbial colonies. Here we report evidence for animal-like behavior in a submerged setting in a key Ediacaran form, Aspidella terranovica Billings 1872, a discoidal fossil from the ca. 560 Ma Fermeuse Formation of Newfoundland (Canada). We describe sedimentary...
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Photographs of the Ediacaran biota from the Llangynog Inlier. The variable ...

Photographs of the Ediacaran biota from the Llangynog Inlier. The variable ...

Published: 15 January 2024
Fig. 3. Photographs of the Ediacaran biota from the Llangynog Inlier. The variable scale for the images should be noted. ( a ) Group of Aspidella s.s . ( b ) Pair of Ediacaria -type morphs of Aspidella s.l. , showing growth interference. ( c ) Ediacaria -type morph of Aspidella s.l . ( d
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Miscellaneous body fossils and trace fossils. ( 1 ) <span class="search-highlight">Aspidella</span> sp., Aarhau...

Miscellaneous body fossils and trace fossils. ( 1 ) Aspidella sp., Aarhau...

Published: 01 October 2024
Figure 24. Miscellaneous body fossils and trace fossils. ( 1 ) Aspidella sp., Aarhauser sub-member, Kliphoek Member, Dabis Formation, UCLA 7307, Aar farm, GSN F 1894. ( 2 ) Aspidella terranovica Billings, 1872 , Fermeuse Formation, St. John's Group, Ferryland, Avalon Peninsula, Newfoundland
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<span class="search-highlight">Aspidella</span> and associated short horizontal trails, Ferryland locality, Newf...

Aspidella and associated short horizontal trails, Ferryland locality, Newf...

Published: 01 August 2013
Figure 2. Aspidella and associated short horizontal trails, Ferryland locality, Newfoundland. A: Large specimen of Aspidella in negative epirelief, showing characteristic ornamentation of central ridge from which finer ridges radiate. Scale bar is 0.5 cm. B: Distinct trail showing indications
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Ediacaran fossils preserved on turbidite soles. 1, Hiemalora (left, ROM 6...

Ediacaran fossils preserved on turbidite soles. 1, Hiemalora (left, ROM 6...

Published: 01 March 2014
Figure 4 Ediacaran fossils preserved on turbidite soles. 1, Hiemalora (left, ROM 62448) and Aspidella (right, ROM 62449); 2 , Namalia Germs, 1968 , ROM 62450; 3, Primocandelabrum Hofmann, O'Brien and King, 2008 preserved on a microbially textured turbidite sole with Aspidella -like
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Morphometric comparison of Miaohe concretions from Maxi and <span class="search-highlight">Aspidella</span> terr...

Morphometric comparison of Miaohe concretions from Maxi and Aspidella terr...

Published: 29 January 2021
Table 1.— Morphometric comparison of Miaohe concretions from Maxi and Aspidella terranovica from the Fermeuse Formation .
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Fossils of <span class="search-highlight">Aspidella</span> terranovica from the Fermeuse Formation at Ferryland...

Fossils of Aspidella terranovica from the Fermeuse Formation at Ferryland...

Published: 01 March 2014
Figure 1. Fossils of Aspidella terranovica from the Fermeuse Formation at Ferryland, Newfoundland, 47.01439°N 52.89151°W, (A; with cover bed above and original surface below), with rhizomorphs in a presumed uprooted specimen (B) and in vertically oriented thin section (C), compared
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Ediacara-style discs broadly similar to <span class="search-highlight">Aspidella</span> or Bergaueria from pa...

Ediacara-style discs broadly similar to Aspidella or Bergaueria from pa...

Published: 01 March 2014
Figure 3 Ediacara-style discs broadly similar to Aspidella or Bergaueria from parasequence four of the Ingta Formation, locality IR. Scale bars=1cm.
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Vertical structures associated with <span class="search-highlight">Aspidella</span> , with experimental structur...

Vertical structures associated with Aspidella , with experimental structur...

Published: 01 August 2013
Figure 3. Vertical structures associated with Aspidella , with experimental structure for comparison. A–E: Examples of structures in sectioned slabs from two localities in Ferryland, Newfoundland, here interpreted as equilibrium traces (horizontal line in E is crack in sectioned rock). Scale
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<span class="search-highlight">Aspidella</span> specimen recovered from Jacob’s Creek quarry in October 2005 (nu...

Aspidella specimen recovered from Jacob’s Creek quarry in October 2005 (nu...

Published: 01 September 2009
Figure 8. Aspidella specimen recovered from Jacob’s Creek quarry in October 2005 (numerical scale in mm). Photo by C. Tacker.
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Figure 7 —Outcrop photos of <span class="search-highlight">Aspidella</span> terranovica Billings, 1872 ( 1–6 ...

Figure 7 —Outcrop photos of Aspidella terranovica Billings, 1872 ( 1–6 ...

Published: 01 January 2008
Figure 7 —Outcrop photos of Aspidella terranovica Billings, 1872 ( 1–6 ), and Aspidella -like Dubiofossil A ( 7 ), from Bonavista Peninsula. All scale bars graduated in cm, except for 5 and 7 , which are in dm. Photos in 1–4 are retrodeformed. 1 , Multi-ringed, Spriggia -like morph
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Figure 8 —Size distribution of <span class="search-highlight">Aspidella</span> specimens in Bonavista area, ba...

Figure 8 —Size distribution of Aspidella specimens in Bonavista area, ba...

Published: 01 January 2008
Figure 8 —Size distribution of Aspidella specimens in Bonavista area, based on long diameter of ellipse coincident with cleavage/bedding lineation. Polymodal pattern reflects different size values for different stratigraphic levels and localities
Journal Article

EDIACARAN BIOTA ON BONAVISTA PENINSULA, NEWFOUNDLAND, CANADA

H. J. HOFMANN, S. J. O'BRIEN, A. F. KING
Published: 01 January 2008
Journal of Paleontology (2008) 82 (1): 1–36.
DOI: https://doi.org/10.1666/06-087.1
...Figure 7 —Outcrop photos of Aspidella terranovica Billings, 1872 ( 1–6 ), and Aspidella -like Dubiofossil A ( 7 ), from Bonavista Peninsula. All scale bars graduated in cm, except for 5 and 7 , which are in dm. Photos in 1–4 are retrodeformed. 1 , Multi-ringed, Spriggia -like morph...
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Location map. ( 1 ) Locations of studied sections containing shallow-water ...

Location map. ( 1 ) Locations of studied sections containing shallow-water ...

Published: 01 March 2015
from Roots et al. ( 2010 ) where stars indicate the approximate locations of fossil discoveries from Sekwi Brook North and South. (a) location of Windermeria ; (b) location of Annulatubus ; (c) location of segmented problematicum and Aspidella ; (d) location
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Sedimentary structures in Facies 6. A) Discoidal fossils assigned to “ As...

Sedimentary structures in Facies 6. A) Discoidal fossils assigned to “ As...

Published: 12 January 2021
Fig. 15.— Sedimentary structures in Facies 6. A) Discoidal fossils assigned to “ Aspidella ” preserved on a true substrate with discontinuous ripple marks. Brachina Gorge. B) Interference patterns on rippled surfaces containing Aspidella , emphasizing a shallow-water origin. Brachina Gorge
Journal Article

Deep-Water Ediacaran Fossils from Northwestern Canada: Taphonomy, Ecology, and Evolution

Guy M. Narbonne, Marc Laflamme, Peter W. Trusler, Robert W. Dalrymple, Carolyn Greentree
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 207–223.
DOI: https://doi.org/10.1666/13-053
...Figure 4 Ediacaran fossils preserved on turbidite soles. 1, Hiemalora (left, ROM 62448) and Aspidella (right, ROM 62449); 2 , Namalia Germs, 1968 , ROM 62450; 3, Primocandelabrum Hofmann, O'Brien and King, 2008 preserved on a microbially textured turbidite sole with Aspidella -like...
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Field photograph of Miaohe Member at Maxi (A), reflected light photographs ...

Field photograph of Miaohe Member at Maxi (A), reflected light photographs ...

Published: 29 January 2021
Fig. 2.— Field photograph of Miaohe Member at Maxi (A), reflected light photographs and 3D model of discoidal concretions from the Miaohe Member at Maxi (B–F), and reflected light photograph of a bona fide Aspidella fossil for comparison (G): A ) Roadcut exposure at the Maxi section, showing
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IRON GEOCHEMICAL DATA FROM SHALE REMOVED DIRECTLY FROM THE BASE OF SLABS BE...

IRON GEOCHEMICAL DATA FROM SHALE REMOVED DIRECTLY FROM THE BASE OF SLABS BE...

Published: 01 March 2016
TABLE 3. IRON GEOCHEMICAL DATA FROM SHALE REMOVED DIRECTLY FROM THE BASE OF SLABS BEARING ASPIDELLA SPECIMENS FROM SEKWI BROOK