[{"clade":"Total group Spintherobolus","fossil":"Megacheirodon unicus","left":"Spintherobolus_broccae","right":"Amazonspinther_dalmata","min":"24.5","max":"119.0760761","locality":"Tremembe Formation","authority":"Malabarba (1998)","age_authority":"Deseadan SALMA, age estimate derived from Flynn and Swisher (1995)"}]