Campbellton Formation
{{Short description|Geologic formation in New Brunswick, Canada}}
{{Infobox rockunit
| name = Campbellton Formation
| image =
| caption =
| type = Geological formation
| age = Latest Pragian-Emsian {{Fossil range|407.4}}
| period = Devonian
| prilithology =
| otherlithology =
| namedfor =
| namedby =
| region = New Brunswick
| country = Canada
| coordinates =
| unitof = Gaspé Sandstones
| subunits =
| underlies =
| overlies = Val d’Amour Formation
| thickness = Nearly 1 kilometer
| extent =
| area =
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The Campbellton Formation is a geologic formation in New Brunswick. It preserves fossils dating back to the latest Pragian and Emsian of the Devonian period.
Description
The Campbellton Formation is the southernmost representative of the Gaspé Sandstones group{{Cite journal |last1=Kennedy |first1=Kirsten L. |last2=Miller |first2=Randall F. |last3=Gibling |first3=Martin R. |date=2012-11-15 |title=Palaeoenvironments of Early Devonian fish and other aquatic fauna of the Campbellton Formation, New Brunswick, Canada |url=https://www.sciencedirect.com/science/article/pii/S0031018212004427 |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |language=en |volume=361-362 |pages=61–72 |doi=10.1016/j.palaeo.2012.08.002 |bibcode=2012PPP...361...61K |issn=0031-0182|url-access=subscription }} and can be divided into 6 facies associations (restricted lacustrine, marginal lacustrine, near-shore lacustrine, coastal-deltaic, sandy to gravelly alluvial plain, and gravelly proximal alluvial environments), and is nearly a kilometer thick.{{Cite journal |last1=KennedyKirsten |last2=R |first2=GiblingMartin |date=2011-11-10 |title=The Campbellton Formation, New Brunswick, Canada: paleoenvironments in an important Early Devonian terrestrial locality |url=https://www.researchgate.net/publication/237169507 |journal=Canadian Journal of Earth Sciences |volume=48 |issue=12 |pages=1561–1580 |language=en |doi=10.1139/e11-055|bibcode=2011CaJES..48.1561K }} Lacustrine facies are prevalent in the lower parts of the eastern belt (representing a large open lake) while upper parts of the formation are dominated by alluvial facies (representing an eastward-flowing axial braided river system).
Fossil content
=Vertebrates=
class="wikitable" align="center" | ||||
colspan="6" align="center" | Acanthodians | ||||
---|---|---|---|---|
Genus | Species | Presence
!Material | Notes | Images |
Ankylacanthus
|A. incurvus | A possible gyracanthid, formerly known as Gyracanthus incurvus. | | ||||
Cheiracanthus?
|C.? costellatus | | | ||||
Mesacanthus
|M. semistriatus | | |
class="wikitable" align="center" | ||||
colspan="6" align="center" | Ostracoderms | ||||
---|---|---|---|---|
Genus | Species | Presence
!Material | Notes | Images |
rowspan=3|Yvonaspis
|Y. campbelltonensis | | | A cephalaspid, formerly listed as a species of Cephalaspis.{{Cite journal |last=Belles-Isles |first=Michel |date=1989-11-01 |title=Yvonaspis, nouveau genre d'Osteostraci (Vertebrata, Agnatha) du Dévonien (Emsien–Eifélien) des Grès de Gaspé (Québec, Canada) |url=http://dx.doi.org/10.1139/e89-204 |journal=Canadian Journal of Earth Sciences |volume=26 |issue=11 |pages=2396–2401 |doi=10.1139/e89-204 |bibcode=1989CaJES..26.2396B |issn=0008-4077|url-access=subscription }} | | ||||
Y. jexi
| | |A cephalaspid, formerly listed as a species of Cephalaspis. | | ||||
Y. westolli
| | |A cephalaspid, formerly listed as a species of Cephalaspis. | |
class="wikitable" align="center" | ||||
colspan="6" align="center" | Placoderms | ||||
---|---|---|---|---|
Genus | Species | Presence
!Material | Notes | Images |
rowspan=3|Phlyctaenius
|P. acadicus | |Fragments of exoskeleton and dermal plates. | A phlyctaeniid. | | ||||
P. atholi
| |Fragments of exoskeleton and dermal plates. | A phlyctaeniid. | | ||||
P. stenosus
| |Fragments of exoskeleton and dermal plates. | A phlyctaeniid. | |
=Invertebrates=
class="wikitable" align="center" | ||||
colspan="6" align="center" | Molluscs | ||||
---|---|---|---|---|
Genus | Species | Presence
!Material | Notes | Images |
rowspan=2|Cyclora
|C. valvatiformis | | | A gastropod. | | ||||
C. imbricata
| | |A gastropod. | |
=Plants=
class="wikitable" align="center" | ||||
colspan="6" align="center" | Fungi | ||||
---|---|---|---|---|
Genus | Species | Presence
!Material | Notes | Images |
Prototaxites
| | | | |
See also
{{Portal |Earth sciences|Canada|Paleontology}}
References
{{Reflist}}
- {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}
Category:Devonian New Brunswick
Category:Devonian southern paleotemperate deposits
Category:Geologic formations of New Brunswick
Category:Sandstone formations of Canada
Category:Siltstone formations of Canada
Category:Conglomerate formations of Canada
Category:Long stubs with short prose
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{{Devonian-stub}}
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