Lesson 16 - Trilobites

3 Pages
Unlock Document

Earth and Ocean Sciences
EOSC 326
Louise Longridge

Lesson 16 Learning Objectives 1 Describe the basic biology of trilobites2 Describe the trilobite exoskeleton and how growth was achieved3 Compare and contrast the different trilobite eye systems4 Discuss some of the unusual eye adaptations found in the trilobites5 Compare and contrast the two major trilobite groupsTrilobitesPeriod Entirely marine creatures that evolved in the Early Cambrian and became extinct at the end of the PermianHabitat Most trilobites were vagrant benthic organisms that lived in shallow marine settings few trilobites lived in deep waterClass Trilobites are arthropods and over 15000 species are recognizedMorphology o Adults ranged in size from 1mm to over 75cm trilobites are bisymmetrical o Dorsal side of their exoskeleton is hard it offered protection and support for the animal It is composed of calcium carbonate and is divided into three parts cephalon thorax and pygidiumCephalon This is the animals head it contained a sensory system the eye
More Less

Related notes for EOSC 326

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.