Units of Measurement Conversion between metric and English units. 1 meter (m) = 39.4 inches = 1.09 yards; 1 yard = 0.92 m 1 centimeter (cm) = 0.39 inches; 1 inch = 2.54 cm 1 millimeter (mm) = 0.039 inch = 39/1,000 inch; 1 inch = 25.4 mm 1 micrometer or micron (um) = 0.000039 inch = 39/1,000,000 inch; 1/1000 inch = 25.4 um
The most important characteristics to consider when identifying Index Fossils: ABUNDANCE: To best allow paleontologists to correlate rocks with other rocks found at locations far apart, it's important that the index fossil be very widely distributed across a vast geographical region.
Pappas reports that Agnostus is a great index fossil. â jason daley, Smithsonian, Look Into the Creepy-Cute Eyes of This Reconstructed, 500-Million-Year-Old Creature, 19 Sep. 2017 These example sentences are selected automatically from various online news sources to reflect current usage of the word 'index fossil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.