A Florida mother accused of killing her two-year-old daughter sobbed Friday after hearing testimony about how the child's bones were chewed on by animals.

Casey Anthony, a 25-year-old Orlando mother, is on trial for first-degree murder in the 2008 death of her toddler daughter, Caylee.

Prosecutors say Anthony used duct tape to suffocate the child, while defense lawyers claim the girl drowned in her grandparents' pool. Anthony has pleaded not guilty. 

Caylee's remains were found in Dec. 2008 -- five months after she was reported missing -- in a wooded area not far from her Orlando home. 

Anthony broke down in tears and started shaking when a professor of anthropology shared gruesome details about the girl's remains inside the courtroom Friday. She was immediately comforted by defense attorney Dorothy Simms.   

University of Central Florida Professor John J. Schultz told jurors how a team of forensics people carefully searched the wooded area, marking with tiny flags the locations where the child's bones were found.

Schultz described two large leg bones found at the site and said, "These have actually been chewed on by animals," the Orlando Sentinel reports. 

Prosecutors resumed Friday where they left off when Judge Belvin Perry ended proceedings a day earlier after Anthony felt sick and had to leave the courtroom.

On Friday morning, jurors saw photos of the tattered and torn shorts and shirt Caylee was wearing when she died. Later, as they viewed pictures of Caylee's bones, Anthony looked down, covering her mouth with her fist.

The Associated Press contributed to this report 

Click here for complete coverage on the Casey Anthony murder trial from MyFoxOrlando.com

TIMELINE: Casey Anthony murder trial