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.
Six-Year General Guideline. The IRS recommends taxpayers keep tax records for at least the three-year period the government has to collect underpaid taxes from taxpayers. The IRS may collect additional taxes for six years from taxpayers who have failed to report income exceeding 25 percent of his gross taxable income.n addition to tax forms and tax returns, taxpayers should keep all records that prove deductions, income and loss on their Form 1040s.