[1] An E-book edition was published by Gollancz's SF Gateway imprint on September 29, 2011 as part of a general release of de Camp's works in electronic form.

Marot is particularly interested in the era when life first emerged from the seas; as Krishna's surface is mostly land and its bodies of water are separated from each other, he theorizes the planet's animal species could have multiple origins.

Fergus guides Marot to the most promising fossil-bearing site, near the town of Kubyab on the banks of the upper Zora River in the Dashtate of Chilihagh.

Ultimately Fergus decides with regret it would be disastrous to take her back, and she leaves Krishna heartbroken, hoping to find treatment for her personality disorders on Earth.

[7] Tom Easton, writing in Analog Science Fiction/Science Fact, takes a different view, calling the book "less good than its predecessors, partly because it is too much of a reprise.

He cautions that "anyone who first visits Krishna through Bones is going to wonder what all the fuss is about," noting that "though the complications lend pace and fury to the action, they seem arbitrary, staged, like a tornado in a wind tunnel."

[10] The main plot device of bickering male and female protagonists not destined for a happy ending together is featured in several late de Camp novels, notably The Prisoner of Zhamanak (1982), The Incorporated Knight (1987), and The Pixilated Peeress (1991).