Example usages (TimeTree uses NCBI Taxonomy IDs):
Pairwise divergence time for human-mouse => http://timetree.temple.edu/api/pairwise/9606/10090
Display relevant studies for human-mouse divergence (CSV formatted) => http://timetree.temple.edu/api/pairwise/9606/10090/csv
Display relevant studies for human-mouse divergence (JSON formatted) => http://timetree.temple.edu/api/pairwise/9606/10090/json
Age of most recent common ancestor for human, mouse, and cat => http://timetree.temple.edu/api/mrca/id/9606+10090+9685/json
Timeline for human (JSON formatted) => http://timetree.temple.edu/api/timeline/Homo sapiens/json