Information about class reptilia in the dictionary, synonyms and antonyms. One of the most striking of these is the presence in males of welldeveloped, paired copulatory organs called hemipenes. Another reason is that the word reptile is misleading because many extinct types were very different from living reptiles. The amniotic egg is different because they have four extra membranes. A definition for reptilia that is less sensitive to changing tree topologies is clearly desirable, especially one that retains the spirit of traditional concepts for reptilia e. Cant wait to have reptiles alive back next year to our event. They are vertebrates, which puts them in the same phylum as humans, dogs, cats, fish and many other animals. Reptiles have the following distinctive characteristics that put them in the class of reptiles. Scales or scutes the ability to lay hardshelled or leatheryshelled eggs. Members of the class reptilia all share numerous characteristics called synapomorphies of physiology, behavior, and functional morphology that readily set them apart from amphibians, mammals, turtles, tuataras, and birds. Reptiles are coldblooded vertebrates, breath by lungs and having the body covered by scales or scutes. Some of these are facts about reptiles in general, while other are facts about particular species within the class reptilia. Class reptilia is the group of animals known as the reptiles. Reptile, any member of the class reptilia, the group of airbreathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body.
A set of pictures, labels, and definitions illustrating the main characteristics internal parts of the reptile a booklet of the main characteristics internal parts of the reptile a wall chart of the reptile. In this lesson, students will receive an unknown dna sequence and use the. Two characteristics enable reptiles to inhabit land environments to a greater extent than their amphibian ancestors. Nov 21, 2017 reptilia, presented as a class in our classification, includes turtles testudines, snakes and lizards lepidosauria, crocodiles and their relatives crocodilia, and birds aves, as well as a. Phylogenetic definition of reptilia systematic biology. They are found in fresh, marine, and brackish water. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. But the point of this article is merely to give you a glimpse into the fascinating world of reptiles and, hopefully, pique.
None of the snakes have limbs with nor have moveable eyelids or. They are ectothermic coldblooded and are found mostly in the warmer parts of the world. Classification of reptilia zoology for ias, ifos and. Class synapsida includes mammals and all their forebears.
Body covered with dry cornified skin, usually with scales or scutes. A set of pictures, labels, and definitions illustrating the main characteristics internal parts of the reptile a booklet of the main characteristics internal parts of the reptile a wall chart of the reptile a live reptile, both a snake and lizard are preferred. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. They are the first cold blooded vertebrates from evolution point of view which came to the land.
Amnion thin membrane enclosing the fluid in which the embryo floatsprevents drying out. Classification of reptilia zoology for ias, ifos and other. Reptile simple english wikipedia, the free encyclopedia. Class reptilia, mesozoic era, age of reptiles, early evolution of amniotes, characteristics of reptiles, terrestrial. Which of the following reptile traits is most responsible. Reptilia is a class in the subphylum vertebrata of the phylum chordata, so they have all of the characteristics of both of these groups in addition to the following.
Some of the general characters of class reptilia are listed below. Lesson 2 2 dna barcoding and the barcode of life database. First, the class reptilia lies at the center of vertebrate history. Which of the following reptile traits is most responsible for this ability.
This article is a good example of the amazing diversity of reptiles. Reptilia, presented as a class in our classification, includes turtles testudines, snakes and lizards lepidosauria, crocodiles and their relatives crocodilia, and birds aves, as well as a. Amphibian characteristics, taxonomy, and evolution goal of the lecture reading assignments. Lizards belong to the animal class reptilia, which also includes snakes, turtles, crocodiles, and the new zealand tuatara. Pdf the original descriptions of reptiles researchgate.
Thus reptiles are concerned in three of the four major jumps the class to class transitions in vertebrate evolution. Teach kids about reptiles and amphibians with informational texts, science projects, worksheets, and educational activities. Pdf by september 2009 an estimated 9084 species of extant reptiles have been described by. The class reptilia the reptiles class reptilia exploring nature. Class reptiles is not a monophyletic group because traditionally it does not include birds. In addition, the terminology used to notate characteristics in the descriptions of these. Mammals are of different types and can be distinguished up into marine mammals, smaller mammals and larger mammals. Proper usage and audio pronunciation of the word class reptilia. Over 10 million scientific documents at your fingertips. Amphibians amphibia and reptiles reptilia are two classes of.
The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. Each developed different characteristics as they adapted to their differing environments, but they all share some characteristics in common. Elongation of internal organs and often the loss of the left lung. Since mammals are of different types they are classified into three subclass based on their reproduction. External structure dry thick, keratinized skinforms scales. The upper part of the skull of reptiles is modified giving the reptiles a far more efficient and powerful jaw action and making the skull light. May 10, 2010 an introductory presentation for my high school zoology course that examines the class reptilia. A basioccipital bone is present in the skull which articulates with the vertebral column by a single condyle. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Scholastic teachables worksheets, lesson plans, learning games, and more. It includes those known extinct members, since these outnumber the living species and also give some guide to the relationships between dinosaurs, living reptiles, birds and mammals. The class reptilia includes the snakes, lizards, crocodiles, and turtles of the world.
There are almost 10,000 species of reptiles on the planet lumped into a single class known as reptilia. I could just as easily have expanded this list to be 50 interesting facts or even 100. There are about 6000 different living species of reptiles. The major derived character of this class is the amniotic egg, inside of which the embryo develops within a protective, fluidfilled sac called amnion. In 1895, herpetologists separated reptiles from amphibia. Reptilia is the class of backboned animals comprising living crocodiles, alligators. Class reptilia body plan have a scale covered skin, and they have claws. Ppt class reptilia powerpoint presentation free to. They are actually considered ectothermic, meaning they derive heat from outside sources, most commonly the sun. An introductory presentation for my high school zoology course that examines the class reptilia. They possess a backbone and are covered \vith scales. In this article we will discuss about the characters and classification of reptilia.
Lesson 2 2 dna barcoding and the barcode of life database bold. Two pairs of limbs, each typically with 5 digits, ending in horny claws and suited to running, crawling or. Some have a spindleshaped or elongated body as well. Class reptilia turtles, tortoises, tuataras, crocodilians, lizards, and snakes classification domain eukarya kingdom animalia phylum chordata subphylum vertebrata class reptilia order chelonia order crocodilia order squamata order rhynchocephalia order chelonia turtles and tortoises earliest fossils dated to 200 m. Class reptilia the upper part of the skull of reptiles is modified giving the reptiles a far more efficient and powerful jaw action and making the skull light. These 21 interesting facts about reptiles merely scratch the surface. The two halves of the lower jaw are joined by a ligament, and each is. Class reptilia grade reptiles clade if you include aves a. In the only reptiles are lizards, snakes, and turtles. Bones of the skull are loosely attached and not fused. Reptilia are two classes of animals that are grouped. Class reptilia a free powerpoint ppt presentation displayed as a flash slide show on id.
Class reptilia vertebrate zoology lecture notes docsity. Reptilian skull types, illustrated by the skulls of characteristic genera from. The organisms belonging to the class reptilia are known to be the first organisms to adapt to life on land. Reptiles are the creeping and burrowing cold blooded vertebrates bearing epidermal scales. Reptiles are one of the major vertebrate classifications, encompassing such cool creatures as snakes, turtles, crocodiles, alligators and lizards. In this article we will discuss about the general characters and classification of class amphibian the vertebrates with dual life. Even though most traditional models of classification will put birds in their own class, they. Are amniotes the egg has extra membranes that protect the embryo and prevent the embryo from drying out. Below, i have compiled what i feel are some of the most interesting facts about the reptiles of the world. Reptiles therefore identified as amniotes that are not birds 6. Eggs are laid on land and possess a shell and special. In this article we will discuss about the classification of class reptilia. The reptiles are classified mainly on the structure of their skulls, in which there are temporal vacuities or fossae or empty spaces in the temporal region. As these animals mature, they metamorphose to adult forms and their gills are replaced by lungs.
The reptiles class reptilia include turtles, snakes, alligators, and lizards. Notice how birds somehow fall into this phylogenetic tree. Class reptilia definition of class reptilia by the free. At this latitude and altitude temperatures are high and extremely favourable to the demographic vigour of crocodile populations giving a high potential rate of population increase hutton, 1984. General characters of class reptilia reptile anatomy scribd.
Reptiles snakes, lizards, alligators, turtles lay hard shelled eggs. The major groups of living reptiles are turtles, tuatara, lizards, snakes, and crocodiles. Squamata is the most diverse of reptiles with about 7,500 species. The student will be able to know about animal kingdom. Geographical characteristics have combined to produce an environment with innumerable small lakes, lagoons and swamps. Rachel was incredibly professional, engaging, and clearly loves what she does. Class reptilia reptiles class aves birds class mammalia mammals about 500 million years ago, the ancestors of the subphylum vertebrata began to evolve into fish, amphibians, reptiles, birds, and mammals. Class reptilia includes turtles, lizards, snakes, crocs, alligators, caimans. General characters of class reptilia free download as powerpoint presentation. Reptiles are tetrapod animals in the class reptilia, comprising todays turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. Some of the general characters of class amphibian are listed below.
Themed practice pages and teaching tools also focus on a range of language arts and math skills. Amphibians amphibia and reptiles reptilia are two classes of animals that are grouped together because they are considered cold blooded however this is an improper term. There are about 6,550 living species of reptiles worldwide. The following is a more detailed listing of class reptilia. Ppt class reptilia powerpoint presentation free to view. Yolk sac surrounds the yolk nutrients for embryo d. To identify an animal as a reptile, it should have each of these characteristics. Birds evolved from a lineage of reptiles dinosaurs. Reptiles live in a wide range of habitats, including forests, swamps, grasslands, deserts, oceans, and mountains.
Aug 10, 2017 class reptilia is the group of animals known as the reptiles. Characteristics of reptiles coldblooded regulate their body temperature using the environment can survive both on land and in water most lay eggs most have scales, none have hair or fur all lack external ears. So instead of reptilia as a taxonomic class, today many experts use class sauropsida which includes all reptiles and birds, living and extinct. Main characteristics internal parts of the vertebrates class reptilia material. Distinguishing features that set the reptiles apart from the amphibians fully terrestrial. All the articles you read in this site are contributed by users like you, with a single vision to liberate knowledge. Reptiles have scales on their bodies and have a dry skin. Species from three of these orders occur in north america. A clade includes all descendants from a common ancestor. Order crocodilia crocodilians, order testudines turtles, and. These are a diverse group of animals that are coldblooded and have or had scales. Reptiles are a grade of evolution rather than a clade. Snakes are distinguished from other reptiles by the following combination of characteristics.
Reptilia article about reptilia by the free dictionary. Currently, 301 species of reptiles are recognized in north america north of mexico. Though variation exists in reptiles, there are a few physical traits that unite them. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Class reptilia and class amphibia share many traits, but reptiles are able to inhabit many areas that amphibians cannot. Characteristics of class mammalia is an online article publishing site that helps you to submit your knowledge so that it may be preserved for eternity.
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