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.
According to the IRS, keep tax records, including records for tithing deductions, for three years. However, some special circumstances may require you to keep records for longer than three years.s long as you can produce the records and they contain the information required, the IRS does not care how you keep your records. Storing records by year and sorting them into categories for each year is a method that works for many people.