Campbellton Formation

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.^[1]

Campbellton Formation
Stratigraphic range: Latest Pragian-Emsian 407.4 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Gaspé Sandstones
Overlies	Val d’Amour Formation
Thickness	Nearly 1 kilometer
Location
Region	New Brunswick
Country	Canada

Description

The Campbellton Formation is the southernmost representative of the Gaspé Sandstones group^[2] 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.^[1] 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).^[1]

Fossil content

Vertebrates

Acanthodians
Genus	Species	Presence	Material	Notes	Images
Ankylacanthus	A. incurvus	Atholville Beds.[3]	Fin spines.[2][3]	A possible gyracanthid, formerly known as Gyracanthus incurvus.[3]
Cheiracanthus?	C.? costellatus			[2]
Mesacanthus	M. semistriatus			[2]

Chondrichthyans
Genus	Species	Presence	Material	Notes	Images
Doliodus	D. latispinosus		Fin spines.[4]	Also known from the York River and Battery Point formations.[4]
Protodus	P. jexi	"Atholville Beds, shoreline approximately 1.3 km W of the interprovincial bridgecrossing the Restigouche River, near Campbellton".[5]	Isolated teeth.[2][5]	A protodontid.

Ostracoderms
Genus	Species	Presence	Material	Notes	Images
Yvonaspis	Y. campbelltonensis			A cephalaspid, formerly listed as a species of Cephalaspis.[2][6]
	Y. jexi			A cephalaspid, formerly listed as a species of Cephalaspis.[2][6]
	Y. westolli			A cephalaspid, formerly listed as a species of Cephalaspis.[2][6]

Placoderms
Genus	Species	Presence	Material	Notes	Images
Phlyctaenius	P. acadicus		Fragments of exoskeleton and dermal plates.[2]	A phlyctaeniid.
	P. atholi		Fragments of exoskeleton and dermal plates.[2]	A phlyctaeniid.
	P. stenosus		Fragments of exoskeleton and dermal plates.[2]	A phlyctaeniid.

Invertebrates

Arthropods
Genus	Species	Presence	Material	Notes	Images
Eoarthropleura		Near the Dalhousie Junction and Point la Nim areas.[7]		An arthropleurid.
Gaspestria	G. genselorum			A millipede.[8]
Millipede	Unnamed.[9]		4 detailed impression fossils.[9]
cf. Parahughmilleria	cf. P. sp.	"Point La Nim (48°03.97’N; 66°24.78’W), west of Dalhousie, New Brunswick".[10]	"Specimen NBMG 11012 consists of a part and counterpart of an articulated partial preabdomen of the opisthosoma".[10]	A eurypterid.
Primitia	P. mundula		Disarticulated valves.[2]	An ostracod.
	P. scaphoides		Disarticulated valves.[2]	An ostracod.
Pterygotus	P. anglicus	Atholville beds near the western end of the Campbellton Formation exposure.[7]		A eurypterid.
	P. sp.			A eurypterid.[2]
Scorpion	Unnamed[11]	Near the Dalhousie Junction and Point la Nim areas.[7]		A scorpion with book lungs preserved.[9]

Molluscs
Genus	Species	Presence	Material	Notes	Images
Cyclora	C. valvatiformis			A gastropod.[2]
	C. imbricata			A gastropod.[2]

Plants

Plants
Genus	Species	Presence	Material	Notes	Images
Bitelaria	B. dubjanskii	Facies 1.[11]		A tracheophyte.
Chaleuria	C. cirrosa	Facies 5.[11]		A tracheophyte.
Drepanophycus	D. gaspianus	Facies 1, 2, 3 and 5.[11]		A drepanophycale.
	D. spinaeformis	Facies 1, 2, 3, 5 and 6.[11]		A drepanophycale.
	D. sp.	Facies 1 and 5.[11]		A drepanophycale.
Kaulangiophyton		Facies 1.[11]		A tracheophyte.
Leclercqia	L. complexa	Facies 1 and 4.[11]		A protolepidodendrale.
	L. andrewsii	Facies 1.[11]		A protolepidodendrale.
Loganophyton	L. dawsoni	Facies 1, 4 and 5.[11]		A tracheophyte.[2]
Omniastrobus	O. dawsonii		"Impressions of strobili with numerous carbonized spore masses".[12]
Oocampsa	O. catheta	"About ½ mi west of Dalhousie Junction."[13]		A tracheophyte.
Oricilla	O. bilinearis	Facies 1 and 5.[11]		A zosterophyll.
Pachytheca		Facies 2.[11]
Pertica	P. dalhousii	Facies 5.[11]		A tracheophyte.
Psilophyton	P. coniculum	Facies 6.[11]		A trimerophytopsid.
	P. charientos	Facies 1.[11]		A trimerophytopsid.
	P. princeps	Facies 1, 3, 5 and 6.[11]		A trimerophytopsid.
	P. sp.	Facies 1 and 5.[11]		A trimerophytopsid.
Sawdonia	S. acanthotheca	Facies 1 and 2.[11]		A zosterophyll.
	S. ornata	Facies 1 and 5.[11]		A zosterophyll.
Spongiophyton	S. minutissimum	Facies 1, 2 and 6.[11]
Staphylophyton	S. semiglobosa	”Section 4”	26 incomplete axes	A zosterophyll.[14]
Taeniocrada	T. dubia	Facies 2 and 5.[11]		A tracheophyte.
Trimerophyton	T. robustius	Facies 4.[11]		A trimerophytopsid.
Zosterophyllum	Z. divaricatum	"South shore of the Restigouche River near Dalhousie, New Brunswick".[15]		A zosterophyll.

Fungi
Genus	Species	Presence	Material	Notes	Images
Prototaxites		Facies 2 and 6.[11]

See also

• Earth sciences portal
• Canada portal
• Paleontology portal

• List of fossiliferous stratigraphic units in New Brunswick