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Download The Dawn of the Deed: The Prehistoric Origins of Sex fb2, epub

by John A. Long

Download The Dawn of the Deed: The Prehistoric Origins of Sex fb2, epub

ISBN: 0226492540
Author: John A. Long
Language: English
Publisher: University of Chicago Press; 1st edition (October 11, 2012)
Pages: 296
Category: Science & Mathematics
Subcategory: Other
Rating: 4.8
Votes: 357
Size Fb2: 1845 kb
Size ePub: 1209 kb
Size Djvu: 1509 kb
Other formats: azw txt mobi rtf


John Long is renowned as the discoverer of the earliest evidence for internal fertilization. In a book encompassing 380 million years of sexual evolution, he lays the full significance of his discoveries in fascinating context. Tim Flannery, author of Here on Earth).

John Long is renowned as the discoverer of the earliest evidence for internal fertilization. Tim Flannery, author of Here on Earth)

Unfortunately, I am not interested in The Life and Times of John A. Long, which was most of the book's content.

Unfortunately, I am not interested in The Life and Times of John A.

Request PDF On Jan 1, 2013, Jussi Lehtonen and others published The Dawn of the Deed: The Prehistoric . The original publication contained a mistake. The department name of the 1st author . Carvalho should be Postgraduate Program of Bioethics

The original publication contained a mistake. Carvalho should be Postgraduate Program of Bioethics. The institutions of the second author E. da Silva should be Centro Universitário Serra dos Órgãos (UNIFESO). February 1963 · Nippon Jibiinkoka Gakkai Kaiho.

Sitting down to read John A. Long’s popular science book The Dawn of the Deed: The Prehistoric . Long’s popular science book The Dawn of the Deed: The Prehistoric Origins of Sex (University of Chicago), I felt immune to the kind of astonishment that Krafft-Ebing elicited in me ages ago. The cover – which should win a prize, by the way - shows two fossilized dinosaurs in flagrante delicto, with a black censorship bar to keep things within the bounds of decency. A computer-animated clip showing the prehistoric mother and child ran during the festivities, and Long spent a couple of sleep-deprived days answering questions from reporters around the world.

Ryan, Christopher, Jethá. Evidence that two main bottleneck events shaped modern human genetic diversity. Proceedings of the Royal Society B. Published online before print October 7, 2009, doi:10. Anderson, . Hessel, . and Dixson, A. F. (2004). Primate mating systems and the evolution of immune response. Journal of Reproductive Immunology, 61: 31–38. The Beauty of the Beastly: New Views of the Nature of Life. New York: Houghton Mifflin. Woman: An Intimate Geography.

Dawn of the Deed -The Prehistoric Origins of Sex".

John Long became the first Australian to hold the position of President of the Society of Vertebrate Palaeontology (SVP), an office between 2016-2018. Dawn of the Deed -The Prehistoric Origins of Sex".

Keywords: dawn, Deed, Prehistoric Origins, Chicago Press, Illinois, ISBN.

Professor John A Long. We all know about the birds and the bees, but what about the ancient placoderm fishes and the dinosaurs? The history of sex is as old as life itself-and as complicated and mysterious. And despite centuries of study there is always more to know. As Long explains, this find led to the reexamination.

Sex at Dawn" sets out to prove that our prehistoric ancestors were happy and healthy, thanks in no small part .

Sex at Dawn" sets out to prove that our prehistoric ancestors were happy and healthy, thanks in no small part to lots of egalitarian . This book takes a swing at pretty much every big idea on human nature: that poverty is an inevitable consequence of life on earth, that mankind is by nature brutish, and, most important, that humans evolved to be monogamous. We've discussed the perils of evolutionary biology in this space before, but this book sets out to destroy almost each and every notion of the discipline, turning the field on its head and taking down a few big names in science in the process.

We all know about the birds and the bees, but what about the ancient placoderm fishes and the dinosaurs? The history of sex is as old as life itself—and as complicated and mysterious. And despite centuries of study there is always more to know. In 2008, paleontologist John A. Long and a team of researchers revealed their discovery of a placoderm fish fossil, known as “the mother fish,” which at 380 million years old revealed the oldest vertebrate embryo—the earliest known example of internal fertilization. As Long explains, this find led to the reexamination of countless fish fossils and the discovery of previously undetected embryos. As a result, placoderms are now considered to be the first species to have had intimate sexual reproduction or sex as we know it—sort of. Inspired by this incredible find, Long began a quest to uncover the paleontological and evolutionary history of copulation and insemination. In The Dawn of the Deed, he takes readers on an entertaining and lively tour through the sex lives of ancient fish and exposes the unusual mating habits of arthropods, tortoises, and even a well-endowed (16.5 inches!) Argentine Duck. Long discusses these significant discoveries alongside what we know about reproductive biology and evolutionary theory, using the fossil record to provide a provocative account of prehistoric sex. The Dawn of the Deed also explores fascinating revelations about animal reproduction, from homosexual penguins to monogamous seahorses to the difficulties of dinosaur romance and how sexual organs in ancient shark-like fishes actually relate to our own sexual anatomy. The Dawn of the Deed is Long’s own story of what it’s like to be a part of a discovery that rewrites evolutionary history as well as an absolutely rollicking guide to sex throughout the ages in the animal kingdom. It’s natural history with a naughty wink.  

Comments:

Carrot
In a remote corner of north-western Australia stands an immense fossil reef formation called the Gogo. It was there in 2007 that paleontologist John A. Long made an astounding discovery: A unique collection of fossil fish complete with tiny embryos, an umbilical cord and "claspers" for internal fertilization. Truly the find of a lifetime. In his book "The Dawn of the Deed" Dr. Long relates the circumstances around his unique discovery and the biology behind his conclusions. When it comes to reproduction in fossil species the evidence can be scanty or even nonexistent. In the past whatever evidence that may have been present was often overlooked or inadvertently destroyed during the collection process. One way to get tiny, or fragile, fossils out of it's rocky matrix is to use a week acid solution that dissolves the rock but leaves the fossil itself intact and undamaged. In the case of Dr. Long's specimen, a small Devonian Placoderm, it's length at just under a foot while the embryos are microscopic in size. So the collection process was a kind of minor miracle in itself. On the whole, however, fossil evidence for "internal fertilization" or "live birth" is not that common with only a few specimens found world wide. In this fascinating book Dr. Long covers the whole process in detail and compares that with what we know about reproduction in living organisms; birds, sharks, other fish, and a close look at modern mammals including whales and primates. Reproduction in reptiles like snakes and turtles leads us on to speculation on how dinosaurs or prehistoric marine reptiles may have done it with each species facing its own challenges. The author also traces the history of this particular study and how ideas have changed over the years from the initial speculations and on to our modern theories. One chapter discuses the "sperm wars" theory and how that may have influenced evolution in the long run. "The Dawn of the Deed" is a well written, informative, look into how sex works in modern and prehistoric life forms, giving the reader an intimate and often humorous look at when it all started and where it's all going. If your at all interested in biology and paleontology you may find this book to be a good read, I did. I had no downloading or technical problems with this Kindle edition.

Last Ranger
GawelleN
Note - This review was first published in my blog: baldscientist.wordpress.com

This was a very fun book to read, but not for the reasons you may think, based on the title. Yes, the book is about sex, but the story is mainly told from the perspective of paleontology. You just have to admire the special ability of a true expert. From my point of view of a paleontology layman, it is absolutely remarkable how the author and collaborators were able to reconstruct the probable history of the oldest embryo from delicate fossils, by painstakingly assembling delicate skeletons and interpreting what they saw. Further, he extended the narrative well beyond just fossils, he went all the way to aspects of molecular and developmental biology.

The book is liberally "sprinkled" with interesting anectdotes taken from the history of science and the writing style is easy to follow and very funny at times. Lots of puns too... I really cannot say that I disliked any part of the book. However, at times he wrote things that made me uncomfortable because they sounded a tad homophobic especially if you read between the lines, but when I kept reading I understood the points that he was trying to make, but only, again, because I kept reading. So, if you,are taken aback by such things, by all means keep reading.

Other reviews that I have seen express some dissapointment for not including more material on humans. Not me. I pretty much know what to expect in such matters. And, anyway, based on the Epilogue, I am entirely sure that Dr. Long is already working on a continuation of the book.

In summary, great job!!!!
Shakataxe
The cover of "Dawn of the Deed" shows two Tyrannosaurus skeletons mating. The invisible "naughty bits" are covered by a black censor bar. With a cover like that, who could resist reading such a book.

The author John Long is the vice-president of research of collections at the Natural History Museum of Los Angeles County and formerly Head of of Sciences at Museum Victoria and Curator of Vertebrate Paleontology at the Western Australian Museum. He is the author of a number of paleontology books, the most famous of which is probably "The Rise of Fishes" (1996).

The "hook" for this book is the discovery by Long's team of a placoderm (armored jawed) fish with embryos inside. The specimen, later given the name Materpiscis ("mother fish") is from the Gogo Formation in western Australia, a lagerstatte for a Devonian reef community which often preserves soft tissue in three dimensions inside limestone nodules. Live birth implies internal fertilization, which in turn implies copulation. This is interesting for two reasons. First, most advanced fish today rely on external fertilization of eggs. Second, at 380 million years, this fossil is the earliest known example of internal fertilization in vertebrates. One would expect the male fish to have some copulatory device such as the claspers seen in modern sharks, and indeed subsequent investigations found placoderm specimens (of other species) with bony claspers. You can see a short video, featuring John Long, on this topic on Youtube ([...]).

Of course, copulation among invertebrates goes back a long way, and we have fossilized ostracods and harvestmen spiders (daddy-longlegs) from the Silurian (20-40 Myr. earlier than Materpiscis) with obvious penises, much like those of their modern counterparts.

This is a very mixed book. About a third of it covers the author's work on Devonian fish and some personal anecdotes about it. About a third of it describes the very weird (to us, anyway) variations on copulation among modern animals, including the variations on sexual organs. If vertebrates seem weird, invertebrates, specifically insects, are downright bizarre in their sexuality. One sixth of the book concerns the history of the science of fertilization and the development of reproductive organs. One sixth of the book is speculation about the mating habits of extinct animals, in particular dinosaurs (which I presume is illustrated by the cover art). I did learn many things, for example:
1. The Argentine duck has the longest penis for the size of a vertebrate animal (about as long as its entire body), and said penis can shoot out at 75 miles per hour.
The claspers of modern sharks are not just to position the female during copulation but also transfer sperm.
There are at least three types of penis among mammals, only one of which relies on blood pressure to become ready.
The same Hox genes that control the construction of fins and claspers in fish control the development of legs and genitalia in tetrapods.
The explanation of what fertilization is, a sperm penetrating an egg, came as late as 1876.

"The Dawn of the Deed" is an easy read and quite amusing. Don't be misled that this book is primarily about paleontology, since the paleontology is only a small part. In that respect, I am reminded of another book "Your Inner Fish" by Neil Shubin, which started off with the discovery of Tiktaalik (considered a "missing link" tetrapod), but took most of its material about evolution from the biology of living animals.

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