Extraordinary Books on Extraordinary Subjects

Welcome to Irregular Books! We are independent publishers of ebooks and real-books on a variety of topics.

Irregular books is an online publishing and book production outfit, created and managed by John Conway and C. M. Kosemen.

For a number of years, we have been inspired by beautifully illustrated books about strange and wonderful things.

Seeing that not many were being produced, we decided to make some ourselves.


The Biology, Evolution, and Mythology of Hidden Animals

Cryptozoologicon is a celebration of the myths, legends, evolution and biology of hidden animals. Always sceptical, but always willing to indulge in speculative fun, Cryptozoologicon aims to provide a new way to approach cryptozoology: as fictional biology.

Where to Buy:

Available in Kindle* iBook Nook ePub and Paperback versions.

*You can download a free Kindle reader app for your computer, tablet, or phone from Amazon here.

All Yesterdays

Unique and Speculative Views of Dinosaurs and Other Prehistoric Animals

Our first book, "All Yesterdays" is an illustrated survey of possibilities and details we might be overlooking in contemporary reconstructions of extinct animals. In two parts, we examine speculative possibilities that may not have been preserved in the fossil record, and muse on what future palaeontologists may think when reconstructing animals that live today.

Where to Buy:

Available in Kindle* iBook Nook ePub and Paperback versions.

*You can download a free Kindle reader app for your computer, tablet, or phone from Amazon here.


"A Book That Will Make You Question Everything You Know About Dinosaurs"

 — Annalee Newitz, io9

"More than a gallery of speculative art, All Yesterdays is an essential, inspirational guide to any aspiring paleoartist."

"For those of you in desperate need of a reprieve from DinosaurusX style programming, you should jump at this chance. I can’t recommend this book any higher. The artwork is stunning. The ideas are fresh and thoroughly backed up, leaving your head spinning with the sheer ingenuity involved. [...] It’s expertly done, eye-opening, and I loved every minute of it."

 — Kacy Nielsen

, Outward Bounder

"If you are even slightly interested in paleontography, I would highly recommend this book if for nothing more than the very novel viewpoint it takes on the field. For an illustrator of extinct animals or a researcher who relies on these illustrations, there are a lot of invaluable lessons to be learned from the material within."
Emily Willoughby, Amazon.com

"Consider this book as your intellectual and creative launch pad to a whole new way of imagining thousands, even millions of extinct animals of yesterday. I can't wait to see what tomorrow brings."

— Kevin S, Amazon.com

"The more I think about All Yesterdays, the more I think it's the book of which, in 20 years' time, freshly qualified palaeontologists will say "That was the book that got me started as a kid. [...] The most beautiful, and also most important, palaeoart of the last 40 years."
Mike Taylor


"This informative, accessible book seeks to explain why, while delighting us with imaginative pictures of dinosaurs and other prehistoric creatures caught being just as diverse and behaviourally interesting as extant animals."
— K. Herbert, Amazon.co.uk

All Your Yesterdays

Extraordinary Visions of Extinct Life by a New Generation of Palaeoartists

A sequel to All Yesterdays, this book is based on the compilation of entries we received for the "All Your Yesterdays" contest of 2013, where we asked artists around the world to illustrate speculative but plausible ideas about dinosaurs and other extinct animals. From herbivores behaving badly to mimicry, parasitism, bizarre displays and even birth defects, here are visions of prehistoric creatures as you never expected to see them, from some of the best new talents in the field of palaeontological art. All Your Yesterdays dwells further into the world of rational speculation with in-depth explanation and scientific references about each artwork.