1. DiscoveringDevonianMicrofossils Microfossils-to-GO! Charlie Drewes Ecology, Evolution & Organismal Biology Iowa State University, Ames IA

2. What are microfossils?  fossilized remains (plant, animal, protozoan)  derive from hard parts (exoskeleton, endoskeleton, covering, shell, teeth)  less than 1-2 mm in size (> 0.001 mm)  imbedded in rock or loose particles  research utility (paleoenvironmental reconstruction, biostratigraphy, paleooceanography)  educational use (hands-on, inquiry, discovery)

3. COURSES & CURRICULA: General & Advanced Biology Geology & Earth Science CONTENT THEMES: Evolution & Biodiversity Paleontology LEVEL: HS or college

4.    440-350 MYA 290-200 MYA 140-65 MYA 1.8-0 MYA

5. DEVONIANDEVONIAN “the age of the fishes”

6. DEVONIANDEVONIAN

7. DEVONIAN Fossil Deposits in Iowa  Rockford FROM: http://www.paleoportal.org/time_space/time_space.php

10. x I save

11. small-sized granules and microfossils ▼ ▼▼ ▼

12. Microfossils & Accessory Tools p. 3

13. Microfossil Spoon p. 5

14. Microfossil Sorting Platform p. 5

15. Microfossil Widget p. 5

16. Transferring Microfossils p. 3

17. █ Foraminifera (multi-chambered shell) █ Charophyte algae (oogonia) █ Sponge (spicules) █ Bryozoa (branching or fenestrated tubes) █ Snail (coiled shell) █ Tentaculite (long, conical shell) █ Polychaete (jaws) █ Ostracod (bivalve carapace) █ Brachiopod (articulating shells) █ Crinoid (articulating, internal ossicles) █ Conodont animal (jaw apparatus) █ miscellaneous spines from unknown origin Microfossil Category Checklist p. 4

18. FORAMINIFERANS

19. CHAROPHYTES - oogonia

20. SPONGE SPICULES

21. BRYOZOANS living freshwater bryozoan

22. GASTROPODS - snails

23. TENTACULITES

24. annelid jaws SCOLECODONTS

25. OSTRACODS seed shrimp crustacean living freshwater ostracod

26. BRACHIOPODS lamp shells

27. CRINOIDS sea lilies echinoderms

28. CONODONTSCONODONTS hypothetical conodont animal

29. unidentified spines, etc

30. Microfossils-to-GO ! from: Microfossils-to-GO ! A hands-on workshop presented by C. Drewes at 2004 National Association of Biology Teachers Convention, Chicago, IL WORKSHOP & WRITE-UP DESCRIPTION: Emphasis on collecting, cleaning, handling, and visualizing Devonian microfossils. Free samples of microfossils, tools for handling, and CD with macro- and micro-fossil image galleries

31. TO REQUEST COPY OF STUDENT LAB WRITE-UP ON MICROFOSSILS, please contact C. Drewes at: PHONE: (515)294-8061 EMAIL: cdrewes@iastate.educdrewes@iastate.edu MAIL: Dr. Charlie Drewes, Rm 503 Science II Bldg (EEOB), Iowa State University Ames, IA 50011 WEB: http://www.eeob.iastate.edu/faculty/DrewesC/htdocs/http://www.eeob.iastate.edu/faculty/DrewesC/htdocs/