Lecanorales is an order of Fungi. There are 3991 species of Lecanorales, in 207 genera and 20 families. This order has been around since the burdigalian age. It includes groups like Ramalinaceae, Mycoblastaceae, and Crocyniaceae.
Definition: The number of fossil occurrences in the Paleobiology Database (https://paleobiodb.org) that are identified as belonging to a particular taxon or any of its subtaxa.
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)