Corals
- Created by: rosie.may7
- Created on: 03-05-16 17:36
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- Corals
- Morphology
- Epitheca
- Coralite
- Septa
- Growth lines
- Tabula
- Calice
- Dissepiments
- Columella
- Nematoblasts
- Mode of life
- Benthonic, Sessile
- Symbiotic relationship with zooxanthellae
- Clear shallow seas
- Between 30 degrees north and south of the equator
- High energy environment
- Fully marine (30-40ppt salinity)
- Temperature between 23 and 27 degrees C
- Reefs
- Atoll
- ring shaped reef found far offshore. Form due to hotspot activity where volcanoes create an area of shallow sea
- Fringe
- Where reef meets the land
- Barrier
- Separated from the land by a lagoon
- Atoll
- Types of coral
- Tabulate
- Cambrian to permian (Extinct)
- Mural pores may be present
- Radial symmetry
- Columella not present
- Many small corallites
- Scleractinian
- Triassic to Recent (Extant)
- Tabulae always present
- Dissepiments always present
- E.g: Thecosmilia
- Major septa at 6 radial points
- Rugose
- Columella always present
- Bilateral symmetry
- Large corallites
- Ordovician to permian (extinct)
- Tabulae always present
- Dissepiments sometimes present
- No mural pores
- Colonial or solitary
- Major septa at 6 points with 4 sets of minor septa
- E.g: Lithostrotian
- Tabulate
- Cnidaria, Anthozoa
- Morphology
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