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Thursday, May 23, 2024

The Oligocene and Snaggletooth

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Tiger sharks are known to eat just about anything they can get their jaws on including sea turtles. This shark is also not discriminating when it comes to prey type as it has been documented eating bony fish, rays, other sharks and even carrion.

The outer enameloid hydroxyapatite of shark teeth contains oxygen atoms. By analyzing these atoms, researchers can reconstruct the temperature of the water during the shark’s lifetime.

Longtooth

Longtooth is a hardy, determined warrior who believes in dedication. Whether guarding underwater installations, patrolling for Decepticon activity or ruthlessly hunting down endangered species because they swallow something valuable, he’s always ready to charge headfirst into battle. He’s even willing to take on the risk of a nuclear attack to prove his dedication. He once received a small piece of Matrix-force from one of his fallen comrades, a shard that he kept as a lucky charm in every fight since.

As a Beasthide Shifter, Longtooth draws strength and stability from the beast within. He gets a 1d6 bonus to hit, plus he can regenerate HP at the start of his turns equal to his Proficiency Bonus. He also gains a fearsome proficiency in Intimidation. He grows fangs as a Shifting feature, which can be used as a bonus action to deal 1d6 plus your Strength modifier of piercing damage to a creature your size or smaller.

This figure features a vehicle alternate mode with a camper-like rear and a flat, boat-like front. It has a grey base with blue front fenders and plastic tyres. It also has a white gun on top. This is a decent robot mode, but it’s not as good as the other 1989 small Pretenders.

When Grayback sent word of the Wolf clan’s revolt, Longtooth quickly proved himself to be a warrior worthy of his blood. His deeds that night would astonish his masters, so much so that they put him in line for leadership. Despite his bestial instincts, Longtooth maintained his sense of honor and dignity in battle. When Iphliss’ lightning spells decimated his fellow Wolves in the mine shaft, Longtooth rushed him and beheaded him with a single blow.

Snaggletooth

The snaggletooth is a misaligned tooth that sticks out from the rest of your teeth. It may be cosmetically unappealing, but it can also cause dental hygiene issues if left untreated. If the snaggletooth is heavy and protrudes a lot, it can be difficult to brush or floss the area around it. This can lead to bacteria build-up and tooth decay. In addition, the crooked tooth can cause your other teeth to move out of alignment. Metal braces are often the preferred treatment method for snaggle teeth.

These example sentences are selected automatically from various online news sources to illustrate the meaning of the word snaggletooth. The examples do not represent the opinion of Merriam-Webster or its editors.

A snaggle-toothed cat inspires fear, while a snaggle-toothed mouse is cute. However, these creatures aren’t the only ones with crooked teeth. Actors, models, and singers sometimes have snaggle-toothed smiles. In fact, Alana Haim recently refused to have her snaggletooth gap fixed for the movie American Gigolo.

The snaggletooth is characterized by a large angular incisor with a distinct notch at the tip. It is found in the families Hemigaleidae, Carcharhinidae, and Sphyrnidae. The snaggletooth is thought to have evolved in response to the competition for prey. It also has a unique feeding mechanism that involves a combination of pronation and squeezing the mandibular arch to create suction. Several new muscles have been identified, including the snaggletooth muscle, which is associated with the pronation of the mandibular arch. This muscle is thought to be involved in the snaggletooth shark’s pronation and suction, and it has implications for understanding the functional morphology of this species. The snaggletooth shark is an important source of food in the Gulf of Mexico and the North Atlantic. Its unique features make it an attractive target for fishermen.

Eocene

The Eocene, 56 million years ago, was a warm and teeming time for sea life. Modern sharks began to appear, including tiger sharks (Galeocerdo cuvier). The first modern marine mammals—artiodactyls and perissodactyls—appeared as well.

Tiger sharks are a large macropredator that can reach lengths of over 5 m (16 ft). Their dorsal surface is dark gray or black and their underbelly is pale white. Depending on the location, tiger sharks may display stripes or spots that fade with age.

Like their relatives the hammerhead and requiem sharks, tiger sharks are ovoviviparous—they give birth to live young. The embryos are fed via a process known as yolk consumption during early development. Later, the embryos switch to drinking uterine fluid in a process called embyotrophy.

The tiger shark’s teeth are serrated and able to cut through the hard shell of sea turtles, which is one reason why they are considered dangerous. The teeth also have an acute interior angle that allows the shark to shear chunks from much larger prey items. The shearing action of the teeth is enhanced by the shark’s innate sawing motion as it shakes its head back and forth to bite into flesh or cartilage.

The tiger shark is a bottom-feeder that prefers murky coastal waters near river estuaries, harbors and canals. It is also a frequent visitor to the lagoons and coral atolls surrounding island chains. This scavenger can eat just about anything and has been known to ingest human remains. In fact, it is not uncommon to find garbage and refuse in the stomachs of tiger sharks. In one case, a female caught in the Red Sea had two empty cans, two burlap sacks and a squid in her stomach.

Oligocene

The Oligocene is the third and last epoch of the Paleogene Period. It started around 34 million years ago and ended 23 million years later. This era was one of transition, moving from the archaic world of the Eocene to the more modern-looking ecosystems of the Miocene. Some of the major changes included a worldwide expansion of grasslands and a regression of tropical broad leaf forests to the tropics. The Oligocene is known for a major mammal turnover event called the Grande Coupure that saw many endemic European mammals wiped out and replaced by Asian immigrants.

Climates remained warm throughout this epoch. However, the slow global cooling that would lead to glaciation was starting to get underway. Oceans also continued to cool, especially around Antarctica. The earliest fossils of baleen and toothed cetaceans appear in this era, although their diversity was limited by the lack of echolocation.

On land, horses continued to become more diverse; anatomical changes suggest a greater cursoriality than their Eocene ancestors. South America became an isolated continent with a quite distinct fauna; it was home to strange animals like pyrotheres, astrapotheres, and litopterns. Diurnal predators, such as terror birds and borhyaenid marsupials, also appeared.

Plants diversified, too. In North America, cashews and lychee trees became common along with temperate deciduous species such as roses and beech. Grasslands and prairies expanded globally, as did sedges, bulrushes, and ferns. South American savannas were dominated by grasses, and horses ate them as well.

Miocene

The Miocene is an epoch of geologic time that extends from about 23 million to 5.3 million years before the present. It is separated from the Oligocene by regional boundaries, and it is subdivided into the Early, Middle and Late Miocene. It is characterized by the presence of fossils in sedimentary rock. The fossil record includes both marine and terrestrial faunas.

Fossils from the early Miocene have revealed a broad diversity of plant and animal life. This diversity has been attributed to climate change, but the precise causes remain unclear. A key feature of the period was a wide distribution of grasslands. In addition, the oceans were relatively warm.

This was the first epoch to contain fossils of birds that look very much like modern ones, such as the enormous South American Argentavis with its wingspan of 25 feet or more and the 50-pound Pelagornis, which had a worldwide distribution. The ancestors of modern mammals also appeared during the early Miocene. The horse developed in the Northern Hemisphere, and the first dogs and bears emerged.

The evolution of large-bodied primates was particularly dramatic. Fossil discoveries have clarified the family tree of extinct apes and humans. The features that many Miocene apes share with great apes and humans can now be viewed as conservative retentions from the ancestral condition. In the middle and late Miocene, the African genera Kenyapithecus and Sivapithecus evolved, while the earliest hyenas and the first sabre-toothed cats of the subfamily Machairodontinae appeared. The origin of the bear-dog Hemicyon occurred close to the time that the earliest apes appeared. This indicates that the development of these features was influenced by environmental pressures as well as evolutionary mechanisms.

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