Reptiles

The evolution of reptiles, beginning with the direct common ancestor with mammals and birds, the amniotes, to the major orders, families and species of today is well known due to the fairly complete fossil record. The first fossilized amniotes discovered were dated to the early Pennsylvanian sub-period of the Carboniferous period, about 323 to 299 million years ago, in the stumps of the oldest extant vascular plant division, the lycopods, in Nova Scotia. This unique mode of fossilization proves the

Vett 2 Physiology Paper 4/2/16 The Reptiles Respiratory Function and Procedure for Surgery Reptiles are a unique animal for various reasons, but I find one of these unique qualities to be especially fascinating. That is the respiratory system and how the reptile’s spontaneous ventilation rate is directly related to temperature and partial pressure of oxygen, whereas the mammal’s respiration is strictly related and driven by carbon dioxide. In veterinary medicine this is something that comes up when

Reptiles are first group of vertebrates which became fully adapted for terrestrial mode of life. Reptiles consist mainly of snakes, tortoises, crocodiles. They are not considered economically useful as many of them like snakes and crocodiles are harmful. Still they have some economic importance such as –

groups of reptiles, known as Crocodilians, Squamates, Tuataras, and Turtles. Crocodilians consists of large reptiles which includes alligators, crocodiles, gharials, and caimans. Squamates are lizards, snakes, and worm-lizards. A worm-lizard is a subterranean burrowing reptile that resembles an earthworm, a legless lizard. Tuataras are a group of reptiles that are lizard-like in appearance but are different from squamates because their skull isn’t jointed. Turtles are the most ancient reptiles alive

Understand About Reptiles as Pets for Beginners If you have have been thinking about getting a reptile as a pet for the first time, there are a few things you need to know before you make a purchase. Reptiles are much different than a dog or cat that you may have had in the past. The following are three things to understand about reptiles as pets. Their natural environment is much different than ours Dogs and cats can adapt quite nicely to the temperatures that we enjoy. But reptiles are cold-blooded

​Reptiles and amphibians are two species of animals. They have been around for millions of years before we were even thrive. Amphibians were some of the first vertebrates to ever walk the Earth. They evolved from a species of prehistoric fish. Reptiles began to appear million years ago. They evolved directly from a species of amphibians. In other words, they are closely related and have the same ancestor. Many amphibians and reptiles are similar, even a number of people may still confuse several

Reptiles are cool, exotic, and fun animals. They are easier to take care of than other animals, such as cats or dog. They have many benefits, such as fewer allergies, and also are easy to maintain. In my opinion, I think reptiles are interesting and wonderful pets to have. Reptiles are gaining popularity because many children are starting to show interest in them. There are many reasons why these animals can be great pets. The article “Pet Reptiles” states, “Many reptiles, unlike cats or

Transitions of Reptiles to Mammals      A long long time ago, in a galaxy not too far away, was a little blue planet called Earth, and on this world not a single mammal lived. However a lot of time has past since then and we now have lots of furry creatures that are collectively called mammals. How did they get their? Where did they come from? These are the kinds of questions that led me to my subject of choice. I will endeavor to provide examples, using specific transitional

some form or other, for 300 million years? Reptiles are fascinating animals that have been around since the Carboniferous Period, 300 million years ago. Many different species of reptiles have come and gone over the course of time and there are five main groups. Turtles and tortoises are distinguished by the presence of their carapace, or shells, which is also their main defense against predators. Lizards are the most diverse and varied among the reptiles with many different types from chameleons

The Biology and Diversity of Extant Reptiles The word reptile itself does not describe a monophyletic group of vertebrates, like the mammals or birds. It is used to classify a polyphyletic group of animals that are a subset of the larger group of Amniotes. The term is best described through a cladogram: [IMAGE] The reptiles first appeared in the early Carboniferous, having evolved from labyrinthodont amphibians. They had several distinct advantages over the amphibians