Common Name:        Scientific Name:        Family Name:        Lamprey,�Northern�Brook        Ichthyomyzon�fossor        Lampreys�(Petromyzontidae)

Image Name: Description:

Click on the list for more images ID Feature 1: Myomere Count ID Feature 2: Myomeres ID Feature 3: Dorsal Fin ID Feature 4: Teeth ID Feature 5: Teeth Side view: Count myomeres from branchial pores to anus. Notice the connected dorsal fins. Close-up anterior: There are 46-56 trunk myomeres. Start myomere count behind last branchial pore. Close-up dorsal fin: The two lobes of the dorsal fin are broadly connected. Close-up mouth: Notice the unicuspid circumoral teeth and the supraoral teeth which are very close-together. Close-up teeth: Notice the unicuspid circumoral teeth and close-together supraoral teeth.