CT Scanners. Usually this instrument is used in the medical field, but it is also used in paleontology. In paleontology these are used to identify the reptiles and animals that are found in rocks without actually cracking the rocks.
4. You do not file a return: Keep records indefinitely. 5. You file a claim for credit or refund after you file your return: Keep records for three years from the date you filed your original return or two years from the date you paid the tax, whichever is later. 6. You file a claim for a loss from worthless securities or bad debt deduction: Keep records for seven years. 7.
How Long To Keep Records. You must keep your records as long as they may be needed for the administration of any provision of the Internal Revenue Code. Keep records that support an item of income or a deduction appearing on a return until the period of limitations for the return runs out.his chapter explains the benefits of keeping records, what kinds of records you must keep, and how long you must keep them for federal tax purposes. Tax records are not the only type of records you need to keep for your farming business.