Lampreys and Conodonts

Divya Iyer

Conodonts

Cambrian Period- Predators

3-10 cm in length

p.704

Taxonomy

Phylum- Chordata

Class – Petromyzontida or Hyperoartia

Sea lamprey (Petromyzon marinus)

Pouched lamprey,

(Geotria australis)

Chestnut lamprey

(Ichthyomyzon castaneus)

Habitat

Commonly Anadromous

Temperate rivers/Coastal Seas

Life Cycle

-Ammocoetes

-Larval phase is almost like lancelets

- External Reproduction

External Anatomy

Internal Anatomy

Conservation Status

-Great Lakes Fishery Commission-Control Methods

-Chestnut Lamprey -Kansas Nongame and Endangered Species Conservation Act 

References

"Introduction to the Petromyzontiformes." UCMP - University of California Museum of Paleontology. N.p., n.d. Web. 15 Feb. 2011. <http://www.ucmp.berkeley.edu/ve

Campbell, Neil. Biology. 8th AP Edition ed. San Francisco: Pearson Education, 2008. Print.