Any of the terminal or smaller branches of an axon that terminates with specialized ending that releases neurotransmitters. Telodendria originally refer to the terminal branches of dendrites, now they refer to the main or terminal arborization of an axon. Word origin: Greek tÃ©los (end) + Greek dÃ©ndron (tree).
Permineralization is one of the ways in which a plant or animal can be turned into a fossil. During this process, mineral rich water seeps into the void spaces of an organism, leaving deposits of minerals behind that slowly build up, creating a cast of the organism.
Many petrified fossils are marine organisms that fell to the bottom of the ocean and were covered in sediment. The permineralization process is very slow. It happens as water seeps through the sediment that covers an organism; the sediment helps keep the organism intact, and the mineralized water slowly works its way into the remains.