Getting to Know the Pachycephalosaurus

As befits a dinosaur named after its massive skull—which measured a whopping 10 inches thick on the front and forward side of its head—most of what we know about Pachycephalosaurus is based on skull specimens. Still, that hasnt kept paleontologists from making educated guesses about the rest of this dinosaurs anatomy: its believed that Pachycephalosaurus possessed a squat, thick trunk, five-fingered hands, and an upright, two-legged posture. This dinosaur has given its name to an entire breed of odd-looking boneheads, the pachycephalosaurs, other famous examples of which include Dracorex hogwartsia  (named in honor of the Harry Potter series) and Stygimoloch (aka the horned demon from the river of hell). Thick Skulls Why did Pachycephalosaurus, and other dinosaurs like it, have such thick skulls? As with most such anatomical quirks in the animal kingdom, the the most likely explanation is that the males of this genus (and possibly the females as well) evolved big skulls in order to head-butt each other for dominance within the herd and win the right to mate; they may also have gently, or not so gently, butted their heads against each others flanks, or even the flanks of menacing tyrannosaurs and raptors. The main argument against the head-butting theory: two half-ton Pachycephalosaurus males charging each other at top speed might have knocked themselves out cold, which would certainly not be an adaptive behavior from an evolutionary perspective!  (Whatever its ultimate purpose, Pachycephalosaurus block-shaped bean clearly didnt protect it from oblivion; this was one of the last dinosaurs on earth, in the late Cretaceous period, when a meteor impact 65 million years ago rendered the entire breed extinct.) As with another family of ornamented dinosaurs, the horned, frilled ceratopsians, theres a fair amount of confusion about pachycephalosaurs in general (and Pachycephalosaurus in particular) at the genus and species level. It may well be the case that many diagnosed genera of pachycephalosaurs actually represent the growth stages of already-named species; for example, both the above-mentioned Dracorex and Stygimoloch may well turn out to belong under the Pachycephalosaurus umbrella (which will no doubt be a major disappointment to Harry Potter fans!). Until we know more about how the skull of Pachycephalosaurus developed from hatchling to adult, this state of uncertainty is likely to persist. You might be amused to learn that, in addition to Pachycephalosaurus, there was also a dinosaur named Micropachycephalosaurus, which lived a few million years earlier (in Asia rather than North America) and was a couple of orders of magnitude smaller, only about two feet long and five or 10 pounds. Ironically, the tiny thick-headed lizard may have engaged in true head-butting behavior, since its tiny size would allow it to survive head-on impacts unscathed.

Effects Of Gender Stereotypes On Children s Clothing

Introduction (Slide 1-3) During the Victorian times, people were dressed to show their identity and also their position in the society. Same as their children, parents also paid the attention to the things their children wore. They were dressed exactly the same style as their parents. Once graphics that separated sexes appeared on clothing, their styles were more specific as boy s or a girl s clothing. So colors were used for children s clothing is a gender symbolism, which is one thing that always be a part of the kid’s garment since that time. However, some parents at the present time are looking for the clothes that is not pushing gender stereotypes on their kids too much. It could be argued that gender in children’s clothing is slightly changing at different periods of time. The layette (Slide 4-6) In the 1800s, before a layette was known, swaddling clothes were the first baby’s first garment. It refers to wrapping infants in blankets or any kind of fabrics in different lengths. The layette was taken place in the Victorian times made swaddling became unpopular. Layette comes from the French word means little drawer, so it could be mean to buy the baby a drawer full of clothes, or at least the essentials that need to get through the first months. The material of a layette in the victorian times were mostly natural fabrics, such as muslin, linen, pure woolen, and cotton. This baby’s first wardrobe contained the fist shirts and cotton diapers with pure wool or silkShow MoreRelatedGender Roles Of Video Games : Implications For Gender Socialization And Aggressive Behavior1576 Words   |  7 Pages1412378 SOCIOL 1A06 - TUTORIAL #24 10/20/2014 Sociology 1A06 Assignment Part B Article 1: Dietz, Tracy L. (1998). An examination of violence and gender role portrayals in video games: Implications for gender socialization and aggressive behavior. Sex Roles, 38(5/6), 425-442). 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Defining and Measuring Crime free essay sample

Defining and Measuring Crime The Uniform Crime Report (ucr) is an annually (yearly) report compiled by the FBI to give an indication of criminal activity. They organize offenses known to the police. The I-JCR divides the criminal offenses into categories: part 1 offense and part II offense. Part 1 offenses are crimes that are recorded by the FBI to give a general idea of the crime picture. Part 1 offenses crimes can be covered by the media and consequently nspire the most fear if crime in population. The majority crimes that fall into the part 1 offenses are property crimes. There are several types of part 1 offenses: criminal homicide- murder and non-negligent, manslaughter (the willful killing of a human being), manslaughter by negligence (the killing of a human being), forcible rape (female forcibly and against her will), robbery (taking/attempted to take anything of value), aggravated assault (unlawful attack by one person on another), burglary breaking and entering), larceny/ theft (unlawful taking away of property from the possession of another), motor vehicle theft (theft or attempted theft of a motor vehicle) and arson (malicious burning or attempted burning). We will write a custom essay sample on Defining and Measuring Crime or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Part 2 offenses are all crimes recorded by the FBI that do not fall into the category of part 1 offenses. The most common offenses are drug abuse violations, driving under the influence and assault that dont result in harm. Part 2 are measured by arrest data. Mala in se and ala prohibtia often express the social function of criminal law. Mala in se are inherently wrong, regardless of whether they are prohibited by law. The crimes go against natural, moral and public principles of a society. Some examples are murder, rape and theft. Mala prohibita are acts that are considered crimes because they have been codified as human made laws. Crime is only considered wrong if it has been prohibited. Having two spouses at once is considered a mala prohibita crime.