Colour image of fossilized fish tooth

Fish: Protodus jexi Woodward, Devonian, Campbellton, New Brunswick, Collector: R.F. Miller, 2001. The shark known as Protodus jexi is known only from fossil teeth. The tooth shape is triangular, with a shallow groove down the side.

Collector: R.F. Miller
New Brunswick Museum
2001
Campbellton, New Brunswick, CANADA
Image width 7 mm
NBMG 11983
© 2012, New Brunswick Museum. All Rights Reserved.


Colour images of fossilized fish and bones

Fish: Doliodus problematicus (Woodward), Devonian, Atholville, New Brunswick, Collector: J. McGovern and R.F. Miller, 1997. Sharks probably evolved in the Silurian Period, although their early fossil record consists only of isolated scales and teeth. Doliodus problematicus was first described in 1897 from New Brunswick from a single tooth. This specimen is the oldest, most complete shark fossil in the world.

Collector: J. McGovern and R.F. Miller
New Brunswick Museum
1997
Atholville, New Brunswick, CANADA
Image width (left) 16 cm
NBMG 10127
© 2012, New Brunswick Museum. All Rights Reserved.


Colour images of braincase fossil and ct scan imagery

Fish CT Scan: braincase of Doliodus problematicus (Woodward), Devonian, Atholville, New Brunswick, Collector: J. McGovern and R.F. Miller, 1997. This specimen of Doliodus problematicus is so well preserved its braincase can be studied. A CT Scan of the head shows canals for nerves and blood vessels.

Collector: J. McGovern and R.F. Miller
New Brunswick Museum
1997
Atholville, New Brunswick, CANADA
Image width (left) 8 cm
NBMG 10127
© 2012, New Brunswick Museum. All Rights Reserved.


Colour images of fossilized teeth and ct scan imagery

Fish CT Scan: jaw and teeth of Doliodus problematicus (Woodward), Devonian, Atholville, New Brunswick, Collector: J. McGovern and R.F. Miller, 1997. This specimen of Doliodus problematicus is so well preserved all its teeth are still in place. A CT Scan of the head shows rows of teeth.

Collector: J. McGovern and R.F. Miller
New Brunswick Museum
1997
Atholville, New Brunswick, CANADA
Image width (left) 11 cm
NBMG 10127
© 2012, New Brunswick Museum. All Rights Reserved.


Colour image of black rock with fossilized teeth

Fish: Doliodus problematicus (Woodward), Devonian, Atholville, New Brunswick, Collector: R.F. Miller and J. McGovern, 1995. A tooth of Doliodus problematicus shows it had two large, sharp cusps.

Collector: J. McGovern and R.F. Miller
New Brunswick Museum
1995
Atholville, New Brunswick, CANADA
Image width 3 mm
NBMG 9978
© 2012, New Brunswick Museum. All Rights Reserved.


Colour image of gray rock with fossilised teeth

Fish: Doliodus problematicus (Woodward), Devonian, Atholville, New Brunswick, Collector: R.F. Miller and J. McGovern, 1995. A tooth of Doliodus problematicus shows it had two large, sharp cusps.

Collector: J. McGovern and R.F. Miller
New Brunswick Museum
1995
Atholville, New Brunswick, CANADA
Image width 5 mm
NBMG 10017
© 2012, New Brunswick Museum. All Rights Reserved.


Dr. Randall Miller discusses the Atholville shark, Doliodus problematicus

Dr. Randall Miller Research Curator, Geology and Palaeontology New Brunswick Museum

This is the locality in the Campbellton Formation where we’ve collected the almost complete shark Doliodus problematicus. It’s a really interesting specimen, it’s the first specimen in the world that shows that sharks had pectoral fin spines, the preservation is excellent, all the teeth are there in the jaw, as well as the braincase is well preserved. It’s also the place where we have found sea scorpions, these are giant lobster-like animals that grew up to, at least at this locality, a metre to almost two metres in length, and the shark and the sea scorpions, or these eurypterids as they are known, were living in the same environment.

New Brunswick Museum
New Brunswick Museum
2012
Atholville, New Brunswick, CANADA
Campbellton, New Brunswick, CANADA
© 2013, New Brunswick Museum. All Rights Reserved.


Learning Objectives

Curriculum Outcomes:

  • Draw and interpret scale diagrams of 2-D shapes.

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