Class Notes (1,100,000)
CA (650,000)
UBC (10,000)
EOSC (400)

EOSC 326 Lecture Notes - Corallite, Scleractinia

Earth and Ocean Sciences
Course Code
EOSC 326
Michael Wheeler

This preview shows page 1. to view the full 4 pages of the document.
Additional EOSC 326 Notes 12/8/2012 4:13:00 PM
Lesson 13:
Differences between scleractinian and rugose coral structure.
o Rugose coral:
Juvenile corallite insertion of two prosepta
First 2 septa are at 180 degrees from one another
cardinal septum and counter septum (middle
column, cross-section A)
Grows 4 more septa inserted, this patterned is
repeated (middle column, cross-section B) septa
inserted in cycles of four (middle column cross-section
Septa always inserted in cycled of four and are inserted
in areas (a),(b),(c), and (d)
Insertion method used by rugose coral can leave gaps
between septa in up to four different areas of corallite
Gaps called fossula
side of coral examined some septa project at an angle
and run into one another rather than run in parallel for
entire length
o Scleractinian coral:
Scleractinian corals septa at all growth stages always
insert in cycles of six
You're Reading a Preview

Unlock to view full version