Salamander key. Introduction: A dichotomous key is constructed of a series of couplets, each consisting of two separate statements. For example: couplet 1. Seeds round soybeans 1. Dichotomous Key on Norns. Name:_________________________________________________ Norns belong to the genus Norno and can be divided into eight species that are generally located in specific regions of the world. Use the dichotomos key to identify the norns below. Write their complete scientific name (genus + species) in the blank. 1. Dichotomous Key with Smilies. Name:___________________________________________________________ Instructions: Use the key below to identify the species name of each of the smileys below. 6. Pamishan Creatures.