Paleozoic fauna Brachiopoda.pptx igneous

Igneous petrology notes

1. Paleozoic fauna (cont.)

2. Brachs vs bivalves

3. Brachiopoda Brachion =arm, podos =foot

4. Soft parts

5. Hard part morphology Strophic Interarea / Palintrope

6. Diversity distribution Brachs vs bivalves

7. Brachidium & lophophore

8. Delththyrium & notothyrium Deltidium Chilidium

9. Astrophic

10. Punctae

11. Classification Linguliformea : organo-phosphatic shells, no teeth or sockets along hinge, pedicle present. Examples: Order Lingulida . Craniiformea : calcium carbonate shells, no teeth or sockets along hinge, pedicle absent. Examples: Order Craniida . Rhynchonelliformea : calcium carbonate shells, both teeth and sockets along hinge, pedicle sometimes present. Examples: Order Strophomenida , Rhynchonellida , Spiriferida etc.

12. Lingulid

13. Craniid

14. Rhynchonellid

15. Terebratulid

16. Spiriferid

17. Strophomenid