Many people have been complementary about my book Dinosaurs and the Expanding Earth in various book reviews, and it has also been highlighted and praised by scientists up to professor level in a number of other publications.
Here are some extracts:
Here are some extracts:
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Reviews for Third Edition
Fortean Times Magazine Review
by Matt Salusbury
by Matt Salusbury
“If it's correct, mechanical design engineer Stephen Hurrell's idea (first put forward in the 1994 hardback edition) would be the biggest paradigm-shift since Copernicus announced the Earth moved round the Sun. Puzzled at how the hugest dinosaurs could support their own weight, Hurrell has concluded that gravity was less in the dinosaur days of the Mesozoic Era, and that our planet has been expanding in size. This has in turn increased the force of its gravity.”
Read the full review here
With thanks to Fortean Times Magazine (here) for permission to reproduce this review in full.
Read the full review here
With thanks to Fortean Times Magazine (here) for permission to reproduce this review in full.
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Amazon customer review for Dinosaurs and the Expanding Earth
by Don Findlay
“In the fine tradition of cross-
His exploration of the topic is a typical example of how someone new to a field and with often limited knowledge of it can, with incisive clarity, see fundamental connections that others cannot -
See full review here
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Reviews for Previous Editions
Annals Of Geophysics review of Dinosaurs and the Expanding Earth
by Professor Giancarlo Scalera
“Have you seen the huge dinosaurs footprint in Colorado? Or in Australia? Have you looked critically at a dinosaur skeleton in a Paleontology Museum (If you visit the Cappellini Museum in Bologna)? The size, posture and estimated weight of these giants are impressive and the problem of the mechanical deambulation of such large bodies has been posed many times. ... Stephen Hurrell’s book Dinosaurs and the Expanding Earth ... offers a discussion of this problem, proposing an increasing gravity throughout geologic time. ... The book is written in a plain straightforward style ... Its clear and lively descriptions lead the reader straight to the core of the arguments.”
See full review here
by Professor Giancarlo Scalera
“Have you seen the huge dinosaurs footprint in Colorado? Or in Australia? Have you looked critically at a dinosaur skeleton in a Paleontology Museum (If you visit the Cappellini Museum in Bologna)? The size, posture and estimated weight of these giants are impressive and the problem of the mechanical deambulation of such large bodies has been posed many times. ... Stephen Hurrell’s book Dinosaurs and the Expanding Earth ... offers a discussion of this problem, proposing an increasing gravity throughout geologic time. ... The book is written in a plain straightforward style ... Its clear and lively descriptions lead the reader straight to the core of the arguments.”
See full review here
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Extract from Earth, Universe, Cosmos
by Professor S. Warren Carey
“Mesozoic dinosaurs could not have existed with present surface gravity, nor would have bat-like pterosaurs with 12 metre wing spans. Engineers (Hurrell, 1994) have shown that dinosaurs’ bones could not have borne their weight ...
The size of dinosaurs peaked in the Jurassic with Diplodocus, Brontosaurus, and flying reptiles like Quetzalcoatlus. By the mid-Cretaceous Triceratops and Tyrannosaurus rex were much smaller, although still huge. Oligocene animals were much smaller although very much larger than their modern relatives. Birds became lighter from the heavy-boned Archaeopteryx and the bird-like Iguanodon to much lighter modern birds.”
by Professor S. Warren Carey
“Mesozoic dinosaurs could not have existed with present surface gravity, nor would have bat-
The size of dinosaurs peaked in the Jurassic with Diplodocus, Brontosaurus, and flying reptiles like Quetzalcoatlus. By the mid-
See full extract from Earth Universe Cosmos here
With thanks to Professor S. Warren Carey for permission to reproduce this full extract from Earth Universe Cosmos.
With thanks to Professor S. Warren Carey for permission to reproduce this full extract from Earth Universe Cosmos.
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Dr James Maxlow
Personal communication
“(This) cleared up a very contentious issue for me ... I checked my mathematical modelling today and discovered ... surface gravity during the Permian was about 50% what it is today, precisely what you are suggesting.”
Personal communication
“(This) cleared up a very contentious issue for me ... I checked my mathematical modelling today and discovered ... surface gravity during the Permian was about 50% what it is today, precisely what you are suggesting.”
Also Extract from Terra Non Firma Earth
by Dr James Maxlow
“It can be seen that on an Expanding Earth, surface gravity during the Precambrian Eras would be about one third of the present value and about one half of the present value during the Mesozoic Era. The Mesozoic Era of course was the Era of dinosaurs, those very large, very long bodied creatures who could very well have benefited from a much lower surface gravity.
... for an Earth undergoing expansion as a result of an increase in mass over time, the surface gravity during the Triassic Period would have been approximately 50 percent of the present value. This then increased to approximately 75 percent of the present value during the Late Cretaceous Period.
Considering the large size and length of many of the dinosaur species, this much reduced surface gravity would have benefited their existence and mobility immensely. The progressive increase in surface gravity over time may then offer an additional explanation for the relatively rapid turnover of dinosaur species throughout their long history.”
by Dr James Maxlow
“It can be seen that on an Expanding Earth, surface gravity during the Precambrian Eras would be about one third of the present value and about one half of the present value during the Mesozoic Era. The Mesozoic Era of course was the Era of dinosaurs, those very large, very long bodied creatures who could very well have benefited from a much lower surface gravity.
... for an Earth undergoing expansion as a result of an increase in mass over time, the surface gravity during the Triassic Period would have been approximately 50 percent of the present value. This then increased to approximately 75 percent of the present value during the Late Cretaceous Period.
Considering the large size and length of many of the dinosaur species, this much reduced surface gravity would have benefited their existence and mobility immensely. The progressive increase in surface gravity over time may then offer an additional explanation for the relatively rapid turnover of dinosaur species throughout their long history.”
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Geology Today
(Unknown reviewer)
“Stephen Hurrell's Dinosaurs and the Expanding Earth is something completely different. Hurrell's thesis -
See full review here
With thanks to GEOLOGY TODAY - Blackwell Science Ltd, (here) for permission to reproduce this full review.
With thanks to GEOLOGY TODAY -
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Extract from The Growing Earth
by David de Hilster
“One of the predictions of a growing earth where mass is increasing, is a reason why dinosaurs and other animals morphed into gigantism. Dragonflies with 2 foot wingspans, crustaceans the size of human beings – all of these can be explained by a smaller gravitational field. ... In a ground-breaking book, Stephen Hurrell deduces the gravity constant from the sizes of gigantic animals through several hundred million years.”
More - (see page 17) here
by David de Hilster
“One of the predictions of a growing earth where mass is increasing, is a reason why dinosaurs and other animals morphed into gigantism. Dragonflies with 2 foot wingspans, crustaceans the size of human beings – all of these can be explained by a smaller gravitational field. ... In a ground-
More -
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Extract from Reservoirs in Naturally Fractured
by Emeritus Professor Lance Endersbee
ATSE Focus.
“... the force of gravity may have been less in earlier times. Stephen Hurrell, a design engineer, worked out that the bones of the larger Dinosaurs were too weak to support their own body weight. He concluded that they could only have evolved at a time when the force of gravity at the Earth's surface was much less than at present. ... Like many such independent thinkers ... we can understand the huge size of the Dinosaurs.”
See full article here
by Emeritus Professor Lance Endersbee
ATSE Focus.
“... the force of gravity may have been less in earlier times. Stephen Hurrell, a design engineer, worked out that the bones of the larger Dinosaurs were too weak to support their own body weight. He concluded that they could only have evolved at a time when the force of gravity at the Earth's surface was much less than at present. ... Like many such independent thinkers ... we can understand the huge size of the Dinosaurs.”
See full article here
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Amazon customer review for Dinosaurs and the Expanding Earth
“Important trailblazing work: This book touches upon what is today considered forbidden scientific territory, ... this wonderful text is the best we have. I hope it brings forth the second generation of researchers this subject area so desperately needs.”
See full review here
“Important trailblazing work: This book touches upon what is today considered forbidden scientific territory, ... this wonderful text is the best we have. I hope it brings forth the second generation of researchers this subject area so desperately needs.”
See full review here
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Google Books review for Dinosaurs and the Expanding Earth
by David de Hilster
“This book is the first of its kind to take on the subject from a global perspective. The Earth and other celestial bodies are indeed growing and this books adds another dimension of evidence. And if you don't know much about the history of the expanding or growing earth, this book gives a decent history of the subject. Hurrell is right on and finally gives compelling universal answers as to why giants existed back "then" and not "now".”
by David de Hilster
“This book is the first of its kind to take on the subject from a global perspective. The Earth and other celestial bodies are indeed growing and this books adds another dimension of evidence. And if you don't know much about the history of the expanding or growing earth, this book gives a decent history of the subject. Hurrell is right on and finally gives compelling universal answers as to why giants existed back "then" and not "now".”
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Edwin Myers
Film maker
Personal communication
“I thought I was the only one who questioned the riddle of Dinosaur size. (This) book is fascinating ... I'm pleased and at the same time a little envious. I could never have written a better study of this phenomenon.”
Film maker
Personal communication
“I thought I was the only one who questioned the riddle of Dinosaur size. (This) book is fascinating ... I'm pleased and at the same time a little envious. I could never have written a better study of this phenomenon.”
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Updated 11May12
