Grouping of organisms according to the similar anatomy helps to understand their evolution and how those organisms have being developed over millions of years. Similarly, structures of organisms have developed over years to function better to survive on the earth. Even though some organisms are unicellular, while some are multicelliular, both types of organisms have got particular structure to function that helps to fulfill their needs. Thus, structure and function of the organisms, including humans, portray the incredible creations of the nature (Campbell et al. 2008).
The phylogenic tree reveals the evolutionary history of animals simply. In this phylogenic tree, humans and other animals that are familiar to us are included in phylum
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Even though every class has some common attributes such as segmented vertebrae, specialization of the structure occurs in each class according to their function and the surviving environment. As such, organisms in class reptilian have got distinctive features that of aves, chondrichthyes, mamalia, and so on (Campbell et al. 2008). The class reptilia is mostly terrestrial organisms. Class reptilian is included snakes, lizards known as Gecko, crocodiles, and so on. The amniotic egg is the most significant feature of reptilian. The amniotic egg is an essential stage of the life cycle of reptilian that helps them to complete their life cycle without water. The body structure of reptilians is specialized to survive in terrestrial environment. Consequently, many reptilians have got four limbs for locomotion. Locomotion is essential for reptilians to live in terrestrial environments (Campbell et al. 2008). Furthermore, the organisms that are categorized into the class reptilian, have different distinguish figures such as Gecko has sticky limbs that can hold them to the smooth walls and run faster on it (Autumn and Peattie 2002).
Gecko, have got all other characteristics of the vertebrae. Geckos are able to climb walls and have the ability to move on the surface such as upside down on ceilings against the gravity (Autumn and Peattie 2002). Specialized feet of Gecko assist their
A dinosaur has an antorbital fenestra with an open hole hip socket. The definition differs from the term used informally because it helped understand how the dinosaur moved and how they were categorized as species. There are four general characteristics that dinosaurs have as a result of their synapomorphies which are permeated acetabulum, ball-shaped head on proximal femur, the Cnemial crest on the proximial tibia, and an ascending process on astragalus. These four dinosaur synapomorphies are related to vertical limb support.
Crocodiles and Alligators are often confused with because of the physical similarities. When an average person encounters a crocodile or alligator, it is most probable that they guess which animal it is and get it wrong. However, the only thing in common is the body structure. Not all of the similarities have to do with the similar physical shape of the crocodiles and alligator’s. In fact, the similarities go beyond. On the other hand, the differences deal with the most detailed dissimilarities between the crocodiles and alligators body.
The crested gecko has a special way of reproducing; this includes a mating call, breeding seasons, and an egg birth rather than a live birth.
There are four main 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 today. They have changed very little since they first showed up 220 million years ago. The first turtle appeared 220 million years ago.(Laura Klappenbach)
The pelvis and spine tell you whether on organism walked upright or on all fours.
Dr. James Hanken, Director and Curator in Herpetology at the Museum of Comparative Zoology at Harvard shed light on the classification of different species. He removed specimens from jars and explained their differences and similarities. He removed and displayed a lizard reptile, that stated originated from Africa ant is also called a chameleons, a king snake from North America a reptile and an amphibian, a boa constrictor snake and a lizard that resembles a snake. He pointed out that the boa constrictor is more mobile because this snake has the
Yoshimoto, Banana. “Helix”. Lizard. Ed. New York: Washington Square Press Publication of Pocket Books, 1993. 1-18. Print.
1. Did the construction of the phylogenetic tree based on the 14 living Caminalcules change the way you would group Caminalcules species in your taxonomic classification (chart)? What does this suggest about classification based on strictly of similarity versus evolutionary relationship?
Part 2) Explain and evaluate the significance of the evidence given to justify this phylogeny. Using the relationship between jaw bone, size, brain and body weight, etc.
Reptile are the next step in the evolutionary tree of chordates. The most outstanding adaptation of reptiles is that they have a means of reproduction suitable to a land existence, Fertilization is internal and the female lays leathery , flexible shelled eggs. The amniotic egg made development on land possible and eliminated the need for a water environment during development.
The fossil of Tiktaalik confirmed a major prediction of paleontology in that it showed characteristics of both aquatic animals, such as fish, and land animals, such as reptiles and amphibians. While it had fins and scales, it also had a flexible neck, a flat head, and complex bone structure in its fins that correspond with the structure of the legs of terrestrial animals. Thus, it demonstrates the evolutionary transition between aquatic and terrestrial life.
Dinosaurs come in many different colors and sizes. The lifespan of a dinosaur is 75 to 300 years. Their daily life is hunting, mating, using the bathroom, and migrating. The defense mechanisms helped them repair their injuries 150 mya. The bone structures are the skull, jaws, neck bones, vertebrae, thigh, pelvis, tail, and rib bone. Dinosaur’s average speed is about 27 mph. Dinosaurs find their food by hunting, which is each other and some eat plants. They reproduce by hatching newborns from eggs. Some communicate by their horns or flickering the tip of their tails. Baryonyx stomach contents were found to contain fish scales, is an example of predator-prey relationship. Some animals that are related to dinosaurs are lizards, because of their skin texture.
A cat is on the prowl to find a new meal when he spots a lying lizard in the distance. All of a sudden the cat pounces onto the relaxing reptile! A lizard’s tail has evolved over the course of millions of years to fall off when in danger. The subject is still being researched to this day.
Mastodonsaurus is the genus that derived from the middle Triassic period and is classified as Temnospondyl amphibian. Temnospondyli is often referred to as the primitive amphibians which were prosperous during the Carboniferous, Permian, and Triassic periods . This diverse group order was composed of a small to giant tetrapods. They go by several synonyms including Batrachosaurus, Labyrinthodon, Mastodonsaurus acuminatus, Mastodonsaurus conicus, Mastodonsaurus maximus , Mastodonsaurus tantus, and Salamandroides. Their classification is listed as Chordata, Amphibia, Temnospondyli, Stereospondyli, Capitosauria, Mastodonsauridae. The Triassic group of temnospondyl is called Capitosauria, specifically characterized by their