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![Facies 3A in the upper Trepassey Formation at Shingle Head (Fig. 4A). All strata are deformed as a result of slumping. Scale (middle left) is 10 cm long.]()
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![Figure20—Outcrop views (parts 1–4, 6–7) and latex mold (part 5) of Fractofusus. Retrodeformed photos in parts 1–2, 4–6; bar scale divisions in all parts are in cm, except for part 7, which has dm divisions. 1, F. misrai, with bent/torn portion at bottom. Mistaken Point Formation, Locality 5 at 35.7 m E (see Fig. 3.2). For unretrodeformed view, see O'Brien and King, 2004, plate 4C. NFM F-517.2, Cluster of three specimens of F. andersoni with general alignment; two specimens contiguous. Irregular light patches are covering ash. Trepassey Formation, Locality 14 at 13.4 m E, 2.8 m S. a: NFM F-518; b: NFM F-519; c: NFM F-520. 3, Oblique view of large F. andersoni, apparently overlying another small one at top left. Trepassey Formation, Locality 13. NFM F-521. 4, F. misrai, Mistaken Point Formation, Locality 6. 5, Latex mold of cluster of five small specimens of F. andersoni. Trepassey Formation, Locality 14 at 12.0 m E, 2.7 m S. a: NFM F-522; b: NFM F-523; c: NFM F-524; d: NFM F-525; e: NFM F-526. 6, Abraded spindle (F. andersoni?) from highest occurrence in Bonavista area. Fermeuse Formation, Locality 21 at 19.7 m E, 0.3 m N. NFM F-527. 7, Cluster of F. andersoni. Trepassey Formation, Locality 13]()
![Figure24—Outcrop views of Ivesheadia lobata (Boynton and Ford, 1995). All photos not retrodeformed; bar scale divisions in cm (parts 1, 3, 4, 6) and in dm (parts 2, 5). 1, Small specimen in Mistaken Point Formation, Locality 6. 2, Large specimen, same locality as in 1.3, Partial specimen, Mistaken Point Formation, Locality 5 at 4.0 m E. NFM F-532. 4, Specimen with faint radial lobate pattern. Trepassey Formation, Locality 13, 3.9 m E ,1.0 m N. 5, Large specimen with impressions of several Fractofusus andersoni (arrows). Trepassey Formation, Locality 14, 12.2 m E, 1.0 m S. 6, Youngest observed Ivesheadia specimen in study area. Fermeuse Formation, Locality 24. Light gray patches are overlying tuff layer. NFM F-533]()
![Representative fossils from surfaces within Mistaken Point Ecological Reserve are shown. (A) Trepassia wardae, bed DRK1 T, Drook Formation, Daley’s Cove. (B) Charnia masoni, bed MP7, Mistaken Point Formation. (C) Charniodiscus procerus, bed MP7. (D) Charniodiscus spinosus, bed MP N (see Bamforth et al., 2008). (E) Hapsidophyllas flexibilis, bed “B” of Landing et al. (1988), Mistaken Point Formation. (F) Pectinifrons abyssalis, bed MP16, Trepassey Formation; best seen when wet. (G) Ivesheadiomorphs and frondose taxa on the “Pizzeria” surface (the surface directly below dated sample LC-1), Long Cove, Trepassey Formation. (H) Fractofusus misrai and holdfast disc, “D” Surface at the Stumps (see Matthews et al., 2017), Mistaken Point Formation. (I) Fractofusus misrai (the largest specimen we have observed anywhere), bed BR6, Briscal Formation. Scale bars = 50 mm except in C, which = 10 mm.]()
![Summary rose of current-ripple orientations from facies 2 turbidites in the Mistaken Point and Trepassey formations. n, number of measurements; CSD, circular standard deviation. See Figs. 3 and 4 for locations of individual measurements.]()
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![(A) The Avalon Peninsula, southeast Newfoundland, showing the distribution of the Mistaken Point Formation and the location of the study site at Mistaken Point. (B) Map of the Mistaken Point area, including access routes and sections measured in this study. A complexly deformed and unmeasurable zone separates the lowest part of the Mistaken Point Formation at Gull Rock Cove from the upper part of the formation at Mistaken Point and Watern Cove. The Shingle Head section spans the middle and upper Trepassey Formation and includes the Trepassey–Fermeuse formation boundary at its top. All sections are easily accessible from the Cape Race Road, via narrow dirt paths. All measured sections are within the Mistaken Point Ecological Reserve. The use of hammers, latexing of fossils, or collecting specimens of any kind without a valid permit is prohibited under the Newfoundland and Labrador Wilderness and Ecological Reserves Act.]()
![Figure21—Morphometric data of Fractofusus species on Bonavista Peninsula. Data points: triangles for specimens in Mistaken Point Formation (MP), circles for Trepassey Formation (TP), and diamond for sole specimen in Fermeuse Formation (FM; see legend in part 1). Note that specimen from MP fits with those from TP. 1, Plot of width against length, showing two distinct trends related to stratigraphic position. 2, Trends and clusters of F. misrai and F. andersoni on plots of number of branches versus width, and versus length/width ratio. 3, Principal components analysis supporting distinction between F. misrai and F. andersoni.]()
![Figure1—Geographic and stratigraphic distribution of CharniodiscusFord, 1958. 1, Location map of Avalon Peninsula, with shaded area representing the Avalon Zone. Samples taken from (1) Lower Mistaken Point of Mistaken Point Formation; (2) “E-Surface” of Mistaken Point Formation; (3) Long Beach of Mistaken Point Formation; (4) Shingle Head of Trepassey Formation; and (5) Spaniard's Bay of Mistaken Point Formation. The letter “E” derives from the sequence of letters applied in figure 10 of Landing et al. (1988) from the Mistaken Point Formation at Mistaken Point. 2, Composite stratigraphic section, indicating positions of southern fossil sites and stratigraphic ranges of C. procerus n. sp. and C. spinosus n. sp. U-Pb dates from Benus (1988) and Bowring et al. (2003)]()
![Measured stratigraphic sections of the middle and upper part of the Trepassey Formation at Shingle Head (A) and Portugal Cove Point (B). See Fig. 1 for locations. These sections are correlated using a unique lithological marker (facies 3A) and fossil bed (correlation line VIII), and the base of the Fermeuse Formation (IX). The rotated facies patterns (see Fig. 3 for legend) in (A) indicate slumps. Slumps are not visible at Portugal Cove Point (B), but the abrupt change of bedding attitude at the 50 m level, without obvious fault offsets, implies that large-scale soft-sediment deformation is present. Series of small black ellipses, debris flow; boxed C, convolute lamination. Other abbreviations as in Fig. 3.]()
![Figure25—Outcrop views of Blackbrookia sp., and associated Fractofusus andersoni in Trepassey Formation, Locality 14. All photos not retrodeformed. Bar scale divisions in cm. 1, Angulate specimen at 5.5 m E, 3.2 m N. 2, Round specimens at 9.3 m, E 7.3 m S. 3, Subangular oblong specimen at 10.5 m E, 5.65 m S. 4, Two oblong specimens with patches of reticulate sculpture, associated with numerous F. andersoni, at 12.5 m E, 1.5 m N. 5, Closeup view of right hand portion of upper specimen in 4, illustrating the dark layer with concave reticulate pattern surrounding lighter colored millimetric pimples. NFM F-534]()
![Figure12—Outcrop views of Primocandelabrum hiemaloranum n. gen. and sp. (1–4) and Primocandelabrum sp. (5). All photos retrodeformed; bar scale divisions in cm. 1, Partial frond with well developed rays on basal disc. Mistaken Point Formation, Level F7 at Locality 5 at 37.5 m E (see Fig. 3.2). Holotype NFM F-484. 2, Large partial specimen. Fermeuse Formation, Locality 26. Lighting from right. Paratype NFM F-485. 3, Detail view of latex mold made from frond of specimen of Primocandelabrum hiemaloranum n. gen. and sp. in part 2, showing rhythmically spaced transverse markings, probably representing secondary branches. Photo is printed as mirror image to show same orientation as in part 2. Paratype NFM F-485. 4, Abraded frond with faint Hiemalora-like base. Fermeuse Formation, Locality 21. Lighting from right. Paratype NFM F-486. 5, Partial frond with Aspidella-like base. Trepassey Formation, Locality 20]()
![Outcrop photos and paleocurrent data from two occurrences of oriented frondose fossils. (A) Two felled Charniodiscus specimens lying parallel to each other showing basal attachment disc (holdfast) and ovate frond with stem and prominent terminal spine. The oval nature of the originally circular attachment disc reflects tectonic shortening. (B) Charniodiscus felling orientations from fossil surface 15 (lower Mistaken Point Formation) located 2 km west of Bishop’s Cove, Spaniard’s Bay north (Spaniard’s Bay north stratigraphic section, level 80 m; Fig. 5). In rose diagrams, grey bars show frond orientations and black bars show turbidity-current flow directions from TC intervals. (C)–(E) Rangeomorph fronds. Scale bars = 1 cm. (F) Rangeomorph orientations from fossil surface 52 (Trepassey Formation) located 200 m west of Big Island, Spaniard’s Bay north (Spaniard’s Bay north stratigraphic section, level 408 m; Fig. 5).]()
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![Figure7—Outcrop photos of Aspidella terranovicaBillings, 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 of A. terranovica, Trepassey Formation, Locality 15. 2, Moderately-ringed morph in Fermeuse Formation, Locality 21. 3, Aggregation of small specimens of A. terranovica, some with radial markings (type morph of Gehling et al., 2000). Renews Head Formation, Locality 32. 4, A. terranovica specimens, and discs with faint, Hiemalora-like radial markings extending from raised peripheral rim (a, c). Compare with H. pleiomorphaVodanyuk, 1989 specimen in Serezhnikova (2005, pl. 4, fig. 3). Gently depressed interiors of discs still retain fine-grained, dark gray tuff covering. The specimens occur on the same bedding surface as the fine Hiemalora (Fedonkin, 1985) specimen illustrated in Figure 9.1. Mistaken Point Formation, Locality 3. NFM catalog numbers: a: NFM F-471; b: NFM F-472; c: NFM F-473; d: NFM F-474; e: NFM F-475; f: NFM F-476; g: NFM F-477. 5, Cluster of A. terranovica specimens of variable size in Mistaken Point Formation Level F4 at Locality 5 (see Fig. 3.1). 6, Large, flat, relatively smooth Spriggia-like morph. Light colored area at center is covering ash layer. Mistaken Point Formation, Level F1 at Locality 4 (see Fig. 3.1). 7, Dubiofossil Type A, a very large ovate structure with concentric rings and very low relief. Mistaken Point Formation, Locality 8.]()
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Journal Article
Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 14 October 2003
Canadian Journal of Earth Sciences (2003) 40 (10): 1375–1391.
...Donald A. Wood; Robert W. Dalrymple; Guy M. Narbonne; James G. Gehling; Matthew E. Clapham Abstract The Mistaken Point and Trepassey formations (Conception and St. John’s groups, respectively) comprise a terminal Neoproterozoic, deep-marine succession of fine-grained turbidites and volcanogenic...
FIGURES
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Image
Facies 3A in the upper Trepassey Formation at Shingle Head (Fig. 4A ). All... Available to Purchase
in Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland
> Canadian Journal of Earth Sciences
Published: 14 October 2003
Fig. 8. Facies 3A in the upper Trepassey Formation at Shingle Head (Fig. 4A ). All strata are deformed as a result of slumping. Scale (middle left) is 10 cm long.
Journal Article
EDIACARAN BIOTA ON BONAVISTA PENINSULA, NEWFOUNDLAND, CANADA Available to Purchase
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 January 2008
Journal of Paleontology (2008) 82 (1): 1–36.
..., forming census populations underneath volcanic ash layers throughout a more than 1 km thick turbiditic sequence. The exposed fossiliferous units comprise the Mistaken Point, Trepassey, Fermeuse, and Renews Head formations. The remains are tectonically deformed, with long axes of elliptical discs aligned...
FIGURES
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Journal Article
A Chronostratigraphic Framework for the Rise of the Ediacaran Macrobiota: New Constraints from Mistaken Point Ecological Reserve, Newfoundland Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 29 July 2020
GSA Bulletin (2021) 133 (3-4): 612–624.
...-bearing horizons, enables recognition and interrogation of potential evolutionary signals. Peak taxonomic diversity is recognized within the Mistaken Point and Trepassey Formations, and uniterminal rangeomorphs with undisplayed branching architecture appear several million years before multiterminal...
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Journal Article
Growth and Ecology of a Multi-branched Ediacaran Rangeomorph from the Mistaken Point Assemblage, Newfoundland Available to Purchase
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 July 2008
Journal of Paleontology (2008) 82 (4): 763–777.
...Emily L. Bamforth; Guy M. Narbonne; Michael M. Anderson Abstract Pectinifrons abyssalis new genus and species is an early Ediacaran (ca. 565 Ma) rangeomorph from the Avalon Peninsula of Newfoundland. It is known from more than 200 specimens from the Mistaken Point and Trepassey formations...
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Image
Figure 20 —Outcrop views (parts 1–4, 6–7 ) and latex mold (part 5 ) of ... Available to Purchase
Published: 01 January 2008
, Locality 5 at 35.7 m E (see Fig. 3.2 ). For unretrodeformed view, see O'Brien and King, 2004, plate 4C. NFM F-517. 2 , Cluster of three specimens of F. andersoni with general alignment; two specimens contiguous. Irregular light patches are covering ash. Trepassey Formation, Locality 14 at 13.4 m E, 2.8
Image
Figure 24 —Outcrop views of Ivesheadia lobata ( Boynton and Ford, 1995 )... Available to Purchase
Published: 01 January 2008
specimen, Mistaken Point Formation, Locality 5 at 4.0 m E. NFM F-532. 4 , Specimen with faint radial lobate pattern. Trepassey Formation, Locality 13, 3.9 m E ,1.0 m N. 5 , Large specimen with impressions of several Fractofusus andersoni (arrows). Trepassey Formation, Locality 14, 12.2 m E, 1.0 m S. 6
Image
Representative fossils from surfaces within Mistaken Point Ecological Reser... Available to Purchase
in A Chronostratigraphic Framework for the Rise of the Ediacaran Macrobiota: New Constraints from Mistaken Point Ecological Reserve, Newfoundland
> GSA Bulletin
Published: 29 July 2020
MP N (see Bamforth et al., 2008 ). (E) Hapsidophyllas flexibilis , bed “B” of Landing et al. (1988), Mistaken Point Formation. (F) Pectinifrons abyssalis , bed MP16, Trepassey Formation; best seen when wet. (G) Ivesheadiomorphs and frondose taxa on the “Pizzeria” surface (the surface directly
Image
Summary rose of current-ripple orientations from facies 2 turbidites in the... Available to Purchase
in Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland
> Canadian Journal of Earth Sciences
Published: 14 October 2003
Fig. 7. Summary rose of current-ripple orientations from facies 2 turbidites in the Mistaken Point and Trepassey formations. n , number of measurements; CSD, circular standard deviation. See Figs. 3 and 4 for locations of individual measurements.
Image
Table 1. Summary description of stratigraphic position (below the top of t... Available to Purchase
in Paleoecology of the oldest known animal communities: Ediacaran assemblages at Mistaken Point, Newfoundland
> Paleobiology
Published: 01 January 2003
Table 1. Summary description of stratigraphic position (below the top of the Trepassey Formation), area studied, smallest feature preserved, number of fossils, and dominant taxa for the studied fossil surfaces. The smallest feature preserved is a taphonomic variable quantifying the finest detail
Image
(A) The Avalon Peninsula, southeast Newfoundland, showing the distribution ... Available to Purchase
in Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland
> Canadian Journal of Earth Sciences
Published: 14 October 2003
and unmeasurable zone separates the lowest part of the Mistaken Point Formation at Gull Rock Cove from the upper part of the formation at Mistaken Point and Watern Cove. The Shingle Head section spans the middle and upper Trepassey Formation and includes the Trepassey–Fermeuse formation boundary at its top. All
Image
Figure 21 —Morphometric data of Fractofusus species on Bonavista Peninsu... Available to Purchase
Published: 01 January 2008
Figure 21 —Morphometric data of Fractofusus species on Bonavista Peninsula. Data points: triangles for specimens in Mistaken Point Formation (MP), circles for Trepassey Formation (TP), and diamond for sole specimen in Fermeuse Formation (FM; see legend in part 1 ). Note that specimen from MP
Image
Figure 1 —Geographic and stratigraphic distribution of Charniodiscus For... Available to Purchase
in MORPHOMETRIC ANALYSIS OF THE EDIACARAN FROND CHARNIODISCUS FROM THE MISTAKEN POINT FORMATION, NEWFOUNDLAND
> Journal of Paleontology
Published: 01 September 2004
Beach of Mistaken Point Formation; (4) Shingle Head of Trepassey Formation; and (5) Spaniard's Bay of Mistaken Point Formation. The letter “E” derives from the sequence of letters applied in figure 10 of Landing et al. (1988) from the Mistaken Point Formation at Mistaken Point. 2, Composite
Image
Measured stratigraphic sections of the middle and upper part of the Trepass... Available to Purchase
in Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland
> Canadian Journal of Earth Sciences
Published: 14 October 2003
Fig. 4. Measured stratigraphic sections of the middle and upper part of the Trepassey Formation at Shingle Head (A) and Portugal Cove Point (B). See Fig. 1 for locations. These sections are correlated using a unique lithological marker (facies 3A) and fossil bed (correlation line VIII
Image
Figure 25 —Outcrop views of Blackbrookia sp., and associated Fractofusu... Available to Purchase
Published: 01 January 2008
Figure 25 —Outcrop views of Blackbrookia sp., and associated Fractofusus andersoni in Trepassey Formation, Locality 14. All photos not retrodeformed. Bar scale divisions in cm. 1 , Angulate specimen at 5.5 m E, 3.2 m N. 2 , Round specimens at 9.3 m, E 7.3 m S. 3 , Subangular oblong specimen
Image
Figure 12 —Outcrop views of Primocandelabrum hiemaloranum n. gen. and sp... Available to Purchase
Published: 01 January 2008
-like base. Trepassey Formation, Locality 20
Image
Outcrop photos and paleocurrent data from two occurrences of oriented frond... Available to Purchase
in Paleoenvironmental and basin analysis of the late Neoproterozoic (Ediacaran) upper Conception and St. John’s groups, west Conception Bay, Newfoundland
> Canadian Journal of Earth Sciences
Published: 02 March 2007
show frond orientations and black bars show turbidity-current flow directions from T C intervals. (C)–(E) Rangeomorph fronds. Scale bars = 1 cm. (F) Rangeomorph orientations from fossil surface 52 (Trepassey Formation) located 200 m west of Big Island, Spaniard’s Bay north (Spaniard’s Bay north
Journal Article
Paleoenvironmental and basin analysis of the late Neoproterozoic (Ediacaran) upper Conception and St. John’s groups, west Conception Bay, Newfoundland Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 02 March 2007
Canadian Journal of Earth Sciences (2007) 44 (1): 25–41.
... show frond orientations and black bars show turbidity-current flow directions from T C intervals. (C)–(E) Rangeomorph fronds. Scale bars = 1 cm. (F) Rangeomorph orientations from fossil surface 52 (Trepassey Formation) located 200 m west of Big Island, Spaniard’s Bay north (Spaniard’s Bay north...
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Journal Article
Paleoenvironmental analysis of Ediacaran strata in the Catalina Dome, Bonavista Peninsula, Newfoundland Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 29 January 2013
Canadian Journal of Earth Sciences (2013) 50 (2): 197–212.
... further support to this correlation. The Fermeuse Formation of the St. John’s Group is widely exposed across the eastern portion of the Bonavista Peninsula, as well as the overlying Renews Head Formation and Signal Hill Group. However, the Mistaken Point and Trepassey formations, and the underlying Drook...
FIGURES
Image
Figure 7 —Outcrop photos of Aspidella terranovica Billings, 1872 ( 1–6 ... Available to Purchase
Published: 01 January 2008
of A. terranovica , Trepassey Formation, Locality 15. 2 , Moderately-ringed morph in Fermeuse Formation, Locality 21. 3 , Aggregation of small specimens of A. terranovica , some with radial markings (type morph of Gehling et al., 2000 ). Renews Head Formation, Locality 32. 4 , A. terranovica specimens
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