Both are conventionally united as infraclasses within the subclass Theria (Parker and Haswell, 1897), which contains all living mammals except monotremes.
The album was mastered in April 2009 by Bunt Stafford Clark (also known for producing albums for Cher, Graham Coxon, Elbow, Placebo, Jesus and Mary Chain, and Alison Moyet) and was released in October 2009 on the British label Monotreme Records (65daysofstatic, Barzin).
The Fall of Math is the debut album by the instrumental post-rock band 65daysofstatic, released on September 20, 2004 through Monotreme.
UA 8699 lacks a cingulid (ridge) resembling a shelf on the lingual (inner) side, indicating that is not a member of Australosphenida (the proposed clade uniting monotremes and some ancient Gondwanan mammals, including the Jurassic Madagascan Ambondro); thus, it can be identified as representing Boreosphenida, which includes marsupials, placentals, and their extinct relatives.