Lampreys and Conodonts

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Presentation transcript:

Lampreys and Conodonts Divya Iyer

Conodonts Cambrian Period- Predators 3-10 cm in length p.704

Taxonomy Phylum- Chordata Class – Petromyzontida or Hyperoartia

Pouched lamprey, (Geotria australis) Sea lamprey (Petromyzon marinus) 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.