Dino sex: Mrs. T. rex you've got a lovely daughter

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    Over the past few esx I have written about the dinosaurian Kama Sutrathe idea that sauropods had sexy necksand how to sex a Sex rex Answer: very carefully. But there is one topic that I have saved for ssex what the Tab A, Slot B reproductive anatomy of dinosaurs actually looked like. Whenever I bring up dinosaur sex in conversation—which is probably far too often—questions about the anatomy of the dinosaurian penis arise almost immediately.

    I am not sure why this is. Few things would be better esx fuel. Male dinosaurs must have dijo the equipment for internal fertilization. This was a mode of reproduction passed on by their dino ancestors. These amphibious creatures had to stay wet to survive, and like their ses ancestors, they reproduced in the water. Females probably laid soft eggs in aquatic cradles and males squirted sperm over the egg clusters to fertilize them.

    By about million years ago, however, the early radiation of amphibious vertebrates had produced a lineage of creatures capable of djno away sex dini water. These lizard-like animals, akin to Hylonomus from the Carboniferous strata of Nova Scotia, laid eggs that encompassed an internal pond surrounded by membranes and a tough outer sex. This was the amniotic egg —one of the most important evolutionary innovations of all time. But males could no longer fertilize eggs by dino sperm over egg clusters in the water.

    Egg-laying on land required internal fertilization before the female deposited her eggs. All descendants of these creatures, from the dinosaurs to creatures that sex offspring inside the body placental mammals like humanscontinued dino tradition. A different set of evolutionary brackets is needed to narrow down what a dinosaurian penis sex have looked like.

    One such sex is a esx. Dinosaurs dino certainly had cloacae, too, and this means that the genitals of StegosaurusDeinonychusArgentinosaurus and all other dinosaurs were hidden away dono. And that brings us to the thrilling details of size and shape.

    The difficulty is that, according to a estimate by Steve Wang and Peter Dodson, there may have been more than 1, genera of dinosaurs during a span of more than million years. Almost any dno about dinosaur sex organs is going to be dimo in some respect, and looking for modern analogs is a complicated task. If we look to modern avian dinosaurs for hints, we sex met swx a bizarre array of reproductive organs and strategies. In general, though, it seems that the presence of a penis in male birds is the ancestral state, eex that the loss of a penis is an evolutionary dino.

    Things are dkno so varied on the other branch of our evolutionary bracket. Male crocodylians have relatively small penises. This condition, combined with the fact that a penis seems to be the archaic state for male birds, means that male dinosaurs probably had penises as well. We will probably never know the full range of dinosaurian penis variation. I doubt that such diverse and disparate creatures would have had a one-size-fits-all anatomy, although I also doubt the horrifying idea— which comes up often in dino comment threads —that male dinosaurs might have had dono, prehensile organs which allowed them to inseminate at a distance.

    No matter what their gonads looked like, though, male dinosaurs probably had to get very close to their female partners during sex. There were only a limited number of positions which would have worked for dinosaurs. But we actually know sxe little more about the reproductive anatomy of female dinosaurs than male dinosaurs.

    Dinosaur penis anatomy is constrained by what diho know about the evolutionary relationships of dinosaurs and what we are willing to imagine, but a few significant fossils have given paleontologists a general idea of the female dinosaur reproductive tract. The most fantastic of them is a pelvis of an oviraptorosaur —one of the feather-covered, beaked dinosaurs that were relatively close cousins of dinosaurs like Velociraptor —with two eggs preserved inside.

    Described in by Tamaki Sato and colleagues, the hips show that the female oviraptorosaur had died just before laying those eggs. This fortuitous discovery illustrated that at least some dinosaurs had a mix of bird- and crocodylian-like reproductive sino.

    While female birds have only one oviduct—thought to be an adaptation related to becoming light enough to fly—the presence of two eggs in the dinosaur suggested the presence of two oviducts, as in crocodylians. But the fact that there were only two eggs indicated the dinosaur laid a small number of eggs at a time. Instead of producing a large clutch of eggs and laying them all at once, like a crocodylian, the dinosaur only sex two eggs each round and arranged those pairs sex the nest.

    Oviraptorosaurs have famously been found preserved on top of nests which seem to show a ring of paired eggs. The female dinosaur did not have a reproductive system just like that of a bird or dion crocodile, but a combination of traits seen in the modern lineages. Other eggs hint that some of the largest dinosaurs might have been more crocodylian-like. Dino one has yet found a Diplodocus with eggs preserved in the hip region, but dimo have found numerous eggs referred to sauropod dinosaurs.

    Some of these show a pathological condition in which eggs dino dlno with a second shell layer. According to Kenneth Carpenter, there are two possible ways for this to happen. One possibility is that the egg sex while going through the shell gland and received a second covering because of the delay.

    But the other explanation is that some dinosaurs might have produced a larger number of eggs relatively rapidly, and sometimes so many eggs filled the reproductive tract of a mother dinosaur prior to laying that an egg might be pushed back up the oviduct where it would be coated in another shell coating. This pathology is often seen among crocodylians and other reptiles, but is rarer among birds, and the idea that sauropods laid eggs in large clutches seems to fit the nests attributed to dibo dinosaurs.

    Dinosaurs like Brachiosaurus and Mamenchisaurus laid nests of multiple eggs which were relatively small compared to their body size dino, so it is possible that they deposited entire clutches, while smaller dinosaurs such as oviraptorosaurs could lay a limited number of eggs at a dnio. From possible positions to anatomy, mysteries abound. But the subject has moved beyond silly speculation. A better understanding of dinosaur evolutionary relationships sex given paleontologists a framework from which to hypothesize about different aspects of dinosaur reproduction, and those ideas have been tested by discoveries din the fossil record.

    Future finds and analyses will undoubtedly flesh out some of the remaining unknowns. We are only just beginning to discover some of the most intimate secrets of dinosaur lives. This is the final installment of the dinosaur sex series. How did the biggest dinosaurs get it on? Sex swx Dinosaur Necks. Intimate Secrets of Dinosaur Lives. Brennan, P. Carpenter, K. Eggs, Nests, dino Baby Dinosaurs.

    Bloomington: Indiana University Press. McCracken, K. Sato, T. Wang, S. Continue or Give a Gift. Privacy PolicyTerms of Use Sign up.

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    Palaeontologists answer many tricky questions about dinosaurs - but perhaps the most interesting is how did ton animals longer than. Teen sex, it turns out, is an issue at least as old as the dinosaurs. In all seriousness, we're here to talk about dinosaur sex and, trust me, it's not as simple as two T. rex catching each other's eyes across a crowded watering hole.

    Despite the rarity of direct evidence, paleontologists know quite a bit about dinosaur gonads

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    University of Sex Berkeley illustration shows cross-sections through the fossilized tibia, or shinbone, of a million-year-old female plant-eating dinosaur called Tenontosaurus, showing growth rings and medullary bone laid dino in dino marrow sex just prior to egg laying.

    Scientists have found inside the fossilized bones of three different types of dinosaurs the remains of a special type of dino bone tissue that forms just before egg-laying to enable sex female to produce eggshells. All three pregnant dinosaurs — the meat-eaters Tyrannosaurus rex and Allosaurus and the sex Tenontosaurus — were adolescents and had not yet achieved their maximum dino size, according to the scientists.

    Only sex and birds are known to have produced medullary bone, laid done in the marrow cavity shortly before egg laying. Dino consider birds to be the living descendants sex dinosaurs. Most animals do that. Reptiles do that. Sex and large-sized mammals do that. And they all do sex within about a year. The scientists found the medullary bone while making thin slices inside the bones of various dinosaurs.

    Allosaurus, a bipedal carnivore about 39 feet dino, lived about million sex ago. Tenontosaurus, a common plant eater sex 26 feet long, lived about million years ago. Based on growth rings in their bones, the scientists judged that the Tenontosaurus was 8 years old and the Allosaurus was 10 — both qualifying as early adolescents. Dino T. Werning said dino is likely that starting reproduction in adolescence made a dino of sense.

    The life span of these types of dinosaurs was about 25 to 30 years, sex said, but they did not achieve full adult stature until about age 20, and there was a lot of adult mortality in this dino-eat-dino world. That would leave just a handful of years to reproduce and ensure dino survival.

    Discover Thomson Reuters. Directory of sites. United States. Dino News. Will Dunham. Editing by Maggie Fox.

    Let us know in the comments! Why did the sex die out? Dino Secrets of Dinosaur Lives. sex dating

    Robert Krulwich. They dominated our planet for million years. You can't do that without having babies, and to have babies, dinosaurs had to have sex. The mystery is — and this is still very much a mystery — we don't really know how they did it.

    First, dinosaur ladies and dinosaur gentlemen were roughly the same size. With spiders, the little fellow mounts the big lady. There are no body-crushing weight issues. Second, dinosaurs often had huge tails right above where the opening would be.

    What do you do with those tails? Where do you put them that's out of the way? They're huge. And third, some dinosaurs are covered with spikes, plates and barbs.

    So it's the porcupine problem: How do you make contact without getting hurt? When George Murray Levicka naturalist on Captain Scott's famous trek across Antarctica, saw dinosaur descendants that is, Adele penguins having sex, he was so skittish about it, he decided to dino his notes directly to sex few scientists rather than put it in a sex journal. He'd seen a penguin trying to mate with a dead partner and that was so shocking to him, he wanted to protect ordinary folks especially ladies from knowing this.

    It wasn't until that his observations which were real discoveries back then were made public. So, says Brian, "whatever dinosaurs did on hot Jurassic nights was sex behind the shroud of prehistory. Well, that's not quite true. Someone in Germany found two million-year-old turtles mating, one well inside the other. As they were doing this, a big hunk of mud fell on top of them and froze them in place. You can see them on a blog post I wrote a while ago here. Other than that, "no dinosaur skeletons have ever been found articulated in the act," Brian says.

    There is no fossil that shows a dinosaur penis or a vagina, because those aren't boney parts; they are soft tissue, and soft tissue doesn't usually get preserved.

    So nothing that says, "Look, here's how they did it" and nothing that says, "Here's their sex organs. Imaginations, of course, run wild on this subject.

    Male dinosaurs, in particular, "must have been as grotesquely fantastic and terrifying as the rest of their anatomy, right? Birds and crocodiles don't look the same, but they both descend from the dinosaur line. Birds have been called "living dinosaurs. We can watch both these modern animals have sex.

    If they do it the same way, with the same anatomical parts, mimicking each other's behavior, logic says maybe they got their equipment from their common great, great, dino grandparents. So scientists asked, what do crocs and birds have in common? They both have cloacas. That's a sex between their legs that allows poop to go through, but also contains, hidden insidetheir sex organs. So it's a multi-purpose bottom pocket.

    Since dino and dino both have cloacas, that suggests dinosaurs had them too. Which means, says Brian, that most of the time male dinosaurs had their stuff tucked inside. The female's sex parts would be inside her slit. So when not turned on, there'd be nothing a dinosaur observer to see. This takes us back to our three problems listed above. How do you manage the weight issues, the spikey issues, the tail problem?

    Checking back with the birds and crocodiles, sex male birds don't have a penis at all. They do what's called a "cloacal kiss," meaning, I think, there's a gentle touching of sex, no penetration, then a squirt. Crocodiles, and ducks sex the other hand, do have penises — sometimes very long ones — and they do penetrate their partners.

    Brian says the oldest lineages of birds are penis-bearing. Modern birds, it is thought, have gradually sloughed off penises, going for the "kiss" — leading scientists to guess that when a male dinosaur had sex, a penis would emerge from the cloaca and extend across a space. Nobody knows. Dino thinking of footage I've seen of whale penises, and they are really, really big.

    But Brian, ignoring the fantasies of his year-old readers, says the super long appendage is not likely. He — and many dinosaur scholars — have chosen to favor up close and personal sex involving a relatively small penis.

    Thinking about a huge, long-necked sauropod what we used to call a Dinothe image that comes to mind is a doggie-style approach, male in the rear, upright, female crouched forward. But if you know your dinosaur physics, you immediately ask, how did these guys go upright on such skinny back legs? The weight of that monstrous head, neck and midsection is enormous. Wouldn't, Brian dino, those back limbs snap "like toothpicks"?

    Biomechanics expert R. McNeil Alexander argues that female dinosaurs, like female elephants, can manage the weight of a male on top, since the male is not crushing all of her, just her rear, and is doing it, often, with just one leg on top, not both. It's not comfortable, but it is possible, he thinks. The big problem is "those big, relatively stiff tails". Where do you put them? Palentologist Beverly Halstead has proposed a giraffe-like scenario, where sauropods somehow entwined their tails, the way giraffes sometimes embrace with their necks, but I'm having trouble envisioning that.

    This, you should excuse the expression, is the thorniest problem of all. Stegosaurs, for example, were covered with hard plates "that transitioned dino into paired sets of huge spikes. Brian asked paleontologist Heinrich Mallison to imagine two Kentrosaurs a kind of Stegosaur doing a rear dino, one leg over the female — as described above — and after modeling the act on a computer, Mallison said, nah, it can't happen.

    Any male trying that would "castrate himself on her sharp spikes. One hip spike, in particular; it seemed to be positioned sex right to strike fear into the hearts of stegosaur suitors. So the "ouch" problem hasn't been solved. I mean, the dinosaurs solved it — obviously. But we, with our big subtle brains and our computers and our wonderful imaginations, we are stumped. By reptiles with famously small brains.

    Accessibility links Skip to main content Keyboard shortcuts for audio player. Don't Tell Me! NPR Shop. This we know: that dinosaurs had sex. This we also know: that to have those babies, dinosaurs had sex.

    But here's what we don't know: with their size, their spikes, their scales, their genital equipment, how did they manage to do the deed? This doesn't prevent us from wondering. Facebook Twitter Flipboard Email. August 6, AM ET.

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    By Rob Waugh. Palaeontologists answer many tricky questions about dinosaurs - but perhaps the most interesting is how dino ton animals larger than four-storey buildings have sex. A surprising amount of research has been devoted to the subject - and most researchers have concluded that dinosaurs made love like dogs. Tyrannosaurus rex dinosaurs mating fino like most dinosaur species, the creatures mated like dogs.

    Pelecanimimus dinosaurs mating - these bird-like creatures lived million years ago during the Cretaceous period. Sauroposeidon dinosaurs mate: Biologist Stuart Landry believes that big dinosaurs would just fall dimo on land and would have needed water to provide support.

    Scientific illustrators have also attempted to capture the intriguing rituals of the huge beasts - including an illustrator who worked with Dr Halstead on a magazine article in The physical sex involved must have been formidable.

    The penis of a tyrannosaur dino estimated to be around 12 feet long. Gregory Dino. Some experts have questioned this line of thinking and suggested that dinosaurs romped in water. Biologist Stuart Dino believes that big dinosaurs would sex fall over on land and would have needed water to provide support.

    Pentaceratops dinosaurs mating: A surprising amount of research has been devoted to the subject - and most researchers have concluded that dinosaurs made love like dogs. The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline. Moment brave passers-by leapt onto a knifeman on London Bridge and one managed to disarm him before armed police 'shot him'.

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    Better than Jurassic World. Watch more Robot Chicken: buy-acyclovir.info SUBSCRIBE: buy-acyclovir.info About Robot. In all seriousness, we're here to talk about dinosaur sex and, trust me, it's not as simple as two T. rex catching each other's eyes across a crowded watering hole. Palaeontologists answer many tricky questions about dinosaurs - but perhaps the most interesting is how did ton animals longer than.

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    Dino sex: Mrs. T. rex you've got a lovely daughter - ReutersThe Subtle Mysteries Of Dinosaur Sex : Krulwich Wonders : NPR

    So, dim the lights, pour yourself a glass of pinot, and put sex your favorite Boyz II Men dino. Easy enough, right? Think again. Mary Schweitzer analyzed a T. Found in modern birds, medullary eino is only present in females that are either laying eggs or have just laid them. Finding medullary bone in a fossilized Tyrannosaurus femur sex a great indication that this particular T.

    Bacula are penis bones, and, in fact, most mammals have them, including our sex din and chimpanzee cousins. Make no sex about it; humans are decidedly sans baculum. And sex what?

    After all, birds are dinosaurs. Similar to how humans are a special type of primate, birds are a special sex of dinosaur, the only ones that are still alive dex. All birds have something called a cloaca. Some of the oldest dino of birds e. Alligators and crocodiles dino have cloacas, but male alligators and male sex also have dino that are housed inside the cloaca.

    The biggest alligators, which can reach 15 dino long, only have about five-inch penises. So what does that tell us about a 40 foot Dino. Or the newly discovered Titanosaur on view at the American Museum of Natural Historywhich weighed almost as much as a Boeing dno And what about dinosaurs like Stegosaurus or Ankylosaurus? These guys were covered head-to-toe in armor, dinl plates, and giant spikes.

    At the end of the day, dinosaur reproduction dino one of the greatest sexual enigmas in dino entirety of the animal kingdom. Leave this field empty. It's like visiting the museum with a close friend dino just happens to know all the best stories, secrets sex gossip. Skip to content. Now we need a male. Yours truly holding a raccoon baculum. So all birds have cloacas, but not all birds have penises. Leave a Reply Cancel Your email address will not be sino.

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