How are species that were once thought extinct being found again? (What tools and methods are being used)

Agenus is a taxonomic grouping that identifies a collection of species. when a scientist discovers a new species, how is this species assigned to a genus

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.