I have stood several times in front of an (apparently) plain white, chalk cliff-face along with others, while Prof Mortimore discussed the implications of what we were seeing. And, every time, I left not just thinking but knowing this was the most fascinating piece of geology I had ever seen. That is it the man.

I like palaeoart. A while ago, I went to the ‘Dinosaurs of China’ exhibition in Nottingham and bought myself a copy of the Chinese palaeoartist, Zhao Chuang’s ‘The Age of Dinosaurs’ – a veritable picture-fest of up-to-date reconstructions of ancient beasts and plants, complete with fuzzy raptors and other bird-like therapods.

Professor Robert Diffendal Jr’s little guidebook to the Great Plains of the USA makes for a fascinating read for an Englishman like me, who has never been there (but wants to). He makes it plain that they rarely correspond to the impression most people have of them.

This is a new edition of the classic little guide on Blue John by Trevor Ford, who has now sadly passed away. It is published by the East Midlands Geology Society and has been revised, updated and expanded by Trevor’s colleagues, Tony Waltham and Noel Worley.

Nebraska has an excellent geological record, which is celebrated by some fine mosaics at the Nebraska State Capitol. When the building was being constructed, and at the request of Prof Hartley Burr Alexander of the Philosophy Department and from drawings by a colleague, the artist, Hildreth Meière, was asked to create a series of mosaics. These are now set out on the floor of the rotunda for all to see.