| 21. | But the immediate reason for the ostracods'migration, he said, is unclear.
|
| 22. | As of 2008, around 2000 species and 200 genera of nonmarine ostracods are found.
|
| 23. | Ostracods of this age were preserved in Grant County, Green County, Lafayette County.
|
| 24. | Invertebrate remains are of small bivalves, ostracods, clam shrimp, and a eurypterid.
|
| 25. | Trapped in the retrieved sediments were the calcified shells of many small marine creatures called ostracods.
|
| 26. | In fossil ostracods, the diffraction gratings were slightly more primitive but served the same purpose.
|
| 27. | Examples include some species of ostracods, small salamanders about in length, and tree frogs.
|
| 28. | Most of the fossil examples of ostracod come from the preserved carapaces, or feeding appendages.
|
| 29. | They are ectoparasites that inhabit other crustaceans, namely ostracods, copepods, barnacles and malacostracans.
|
| 30. | These bottom dwelling ostracods emit a light stream into water when disturbed presumably to deter predation.
|
