# data[].attributes.body
All the skulls seem to have larger eye areas, and a more defined back of the skull.

# data[].attributes.body
At this level, the organisms have become smaller than their ancestors, or narrower in shape.

# data[].attributes.body
All these shapes start to have less of an extended skull and a more rounded back of the skull.

# data[].attributes.body
The skulls are extended just like their ancestor's.

# data[].attributes.body
The skull looks the largest and oldest; other skulls have characteristics that look like they've been passed on by this type of organism.