Spiny Dogfish: Squalus acanthias
- Description and drawings of this species and many of its teeth, and information on its habits, range and occurrence in the Gulf of Maine.
- http://www.gma.org/fogm/Squalus_acanthias.htm

Black Dogfish: Centroscyllium fabricii
- Drawing of this small species and its teeth, its description and information on its range.
- http://www.gma.org/fogm/Centroscyllium_fabricii.htm

Portuguese Shark: Centroscymnus coelolepis
- Drawing of this species, its description and information on its habits and range.
- http://www.gma.org/fogm/Centroscymnus_coelolepis.htm

Greenland Shark: Somniosus microcephalus
- Sometimes known as the sleeper, gurry or ground shark, a drawing of this species, its description, habits and range.
- http://www.gma.org/fogm/Somniosus_microcephalus.htm

Dalatias licha
- Drawing and information about this species.
- http://www.gma.org/fogm/Dalatias_licha.htm

Bramble Shark: Echinorhinus brucus
- Also called the spiny shark, this species is named for the thorn-like scales on its back. Drawing and information.
- http://www.gma.org/fogm/Echinorhinus_brucus.htm

Order Squaliformes: Dogfish Sharks
- Information about these fish with a field identification key.
- http://dspace.dial.pipex.com/sharktrust/ordsqual.shtml

Orders Summary for Squaliformes
- Identifying features of members of this order, including the families Centrophoridae, Dalatiidae, Echinorhinidae, Etmopteridae and Squalidae.
- http://www.fishbase.org/Summary/OrdersSummary.cfm?order=Squaliformes

Squaliformes
- Information from Wikipedia on this order of sharks, members of which are commonly known as bramble, gulper, sleeper and dogfish sharks.
- http://en.wikipedia.org/wiki/Squaliformes