You have collected the evidence.
But until an expert interprets that evidence, you don't really know how it all fits into your case. A crucial step here is determining where to send each item for further analysis. You must consider what type of information each piece of evidence provides and which expert is qualified to examine it. The options are: Anthropology, Botany, Entomology, DNA, and Isotope Analysis.
Anthropological analyses do not harm the remains, so they should be done before sending any material for destructive testing like DNA or Isotopes. Plant and insect evidence is usually collected at the scene, so those samples are already on their way to their respective labs.
Start by sending the recovered bones to Forensic Anthropology.