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BIO211H5 (55)
Lecture

BIO211
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Department
Biology
Course
BIO211H5
Professor
Jessica Hawthorn
Semester
Fall

Description
Notochord - support  Dorsal hollow nerve cord –spine and brain  Pharyngeal gill slits – region behind mouth  Post-anal tail- tail past bum Notochord, dorsal hollow nerve cord, pharyngeal gill slits, post-anal tail- chordate Hagfishes Fossil-record Pennsylvanian Rely on olfaction-smelling Lampreys Fossil record Mississippian-recent Rugose corals – Solitary “horn corals” – Colonial-main reef builders • Life in the sediment – More burrowers  pump O2 bearing water into sediment – Indicated by increased bioturbat
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