Skull types in reptiles SlideShare

Order-10: Rhynchocephalia •Skull with two pairs of arches •MaleTuataras lack a penis or other copulatory organ •Have teeth that are set squarely on the jawbone Example: Sphenodon 26. Order-11: Squamata •Lizards and snakes •Skin with horny epidermal scales •Quadrate bone moveable Example: Naja naja 27 General characters• Reptiles means creeping• Limbs are clawed when present• Study of reptiles is called herpetology• Cold- blooded(poikilothermic)• Exoskeleton of horny scales,scutes or bony plates• Skin dry,cornified and non glandular• Skull is monocondylic• T-shaped interclavicle present• Heart with 2 auricle and incompletely divide ventricle(3.5 chambers) except crocodiles whose have 4 chambers• R.B.C. oval and nucleated• 3-chambered Cloaca present• Uricotelic. Types of Skull Based on Fenestrae (Temporal Openings) 1. Anapsid skull - The primitive skull, has no temporal fenestra, possessed by turtles and other primitive reptiles. 2. Diapsid skull - The diapsid skull has two temporal fenestrae, possessed by most members of diapsida including crocodiles, birds and lizards. 19. 3 Reptiles class 1. Priyanka Rani Majumdar Lecturer Dept. of FIMS NSTU 2. Class Reptilia • L. repere, creeping • Terrestrial tetrapods • Cold blooded, limbs 2 pairs; Skin dry and devoid of glands • Respiration by lungs • Covered by ectodermal horny scales or bony plates • Body divisible into head, neck, trunk and tail • Heart usually 2-3chambered except croc

ANAPSID SKULL (found in Cotylosauria and Chelonia) This is the most primitive type Of skull Of reptiles that occurred in primitive labyrinthodont amphibians and then in primitive reptiles like Seymoria. The anapsids were the first reptiles to appear in the Carboniferous Period (345 to 280 million years ago). Anapsi Reptiles are ectothermic animals whose body is covered by epidermal scales. They possess monocondylic skull that rests on a long neck made of atlas, axis and..

Reptiles - SlideShar

The following is a list of reptiles living on Skull Island across the various continuities and stories featuring King Kong B.Sc 2 year Zoology chordata all videos Link https://www.youtube.com/playlist?list=PLBH3OLLSN1qvPXrYKYZ8dqtr8kZSUvuCVB.Sc 2 year Zoology. Types of skulls in reptiles . 1. Anapsid skull . 2. Synapsid skull. 3. Parapsid skull . 4. Diapsid skull . 1.Anapsid skull. Anapsid is the most primitive from of the skull which was found in cotylosaur and early reptiles. The roof this skull is completely bony especially in temporal region. Thus, this skull is without any vacuity an In general, fish, amphibians and most reptiles lack a solid bony secondary palate, while mammals all have it. For comparison, look at the skulls of a frog, salamander, gila monster, and bird. References for alligators. Alligator skeleton from Udo Savalli at ASU. Snake. We have a snake skull and whole snake skeleton in lab Skull type is one characteristic used to place those vertebrates descending from a reptilian ancestor into different branches of the phylogenetic tree. Mammals are derived from reptiles with a synapsid skull. Modern lizards, snakes, crocodilians, and birds are derived from a diapsid ancestor

Reptilia classification by deepak rawal - SlideShar

The colours of reptiles are produced by both melanocytes in the epidermis and three types of chromatophores in the dermis: melanophores, which contain melanin; xanthophores, which contain yellow pigments; and iridophores, which contain reflecting platelets of colourless guanine Lecture Notes. There are three basic skull types of the dog based on skull based width and muzzle length. Building on the root cephalic, which means head, we have dolichocephalic (meaning long head), mesaticephalic (which is a middle or medium head), and brachycephalic (meaning short head) Types of Natural Selection (By Suneel Singh) SUMMARY Natural selection is that force which produces systematic heritable changes in a population from generation to generation, creating evolution. Thus it may become a directional phenomenon, producing changes in a definite direction, giving rise to new species Reptiles ppt - pt.slideshare.net Reptiles

Colonial Beach Virginia 22443 Hours: Monday - Friday: 8am - 4pm Free Estimate Project Gallery. Locally Owned & Family Operated / We Take Pride in Our Wor The majority of carnivorous reptiles have nonspecialized diets and feed on a Land tortoises are vegetarians, eating leaves, grass, and even cactus in some cases. The green iguana (I. iguana) of Central and South America, the chuckwalla (Sauromalus obesus) of the southwestern United States and northern Mexico, and the spiny-tailed agamids (Uromastyx) of North Africa and southwestern Asia also are herbivorous

Comparative Anatomy - Skeletal System - SlideShar

Reptiles class - SlideShar

Skull types in reptiles. Snakes of India. Status and affinities of Sphenodon. Status of crocodiles. Urochordata - Herdmania. ANIMAL DIVERSITY (NON-CHORDATA) Ascaris. Aurelia - The jelly fish. Bilateria & Radiata. Bilateria & Radiata. Canal system in sponges. Cattle Leech - Hirudinaria granulosa Reptile lineages: 3 skull types. We discussed the history and biology of the anaspids (Testudines -turtles) We began discussing the history and biology of the diaspids (Lepidosauria - lizards and snakes) Diapsid Reptiles: Superorder Lepidosauria (snakes, lizards) 6000 species - include most of the modern living reptiles This double type of suspension is referred to as a mphistylic jaw suspension. In modern bony fish and modern day sharks (e.g. dogfish) the hyomandibular of the hyoid arch forms a bridge attaching the jaws to the skull. The jaws, free from the skull, can be swung forward a little. Connective tissue and devices like optic pegs help position the jaws

This type of vision gives them a wider range of view and better depth perception. Predators need good depth This is where the spine enters the skull. It helps in identifying the type of skull you have by indicating how the animal moved. If this hole is near the bottom of the skull then the animal had a more upright stance View presentations and documents with title RÉPTILES on SlideShare, the world's largest community for sharing presentations The type of skull in these reptiles is `:` 13.7 k . 600+ Answer. Step by step video, text & image solution for Mammals evolved from therapsid reptiles in Triassic period. The type of skull in these reptiles is : by Biology experts to help you in doubts & scoring excellent marks in Class 12 exams

Origin of reptiles. Origin of tetrapods. Parental care in Amphibia. Primates, diversity and social life. Respiration in fishes. Retrogressive Metamorphosis. Scales in fishes. Skull types in reptiles. Snakes of India. Status and affinities of Sphenodon. Status of crocodiles. Urochordata - Herdmania. ANIMAL DIVERSITY (NON-CHORDATA) Ascaris The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain.It is subdivided into the facial bones and the brain case, or cranial vault (Figure 1).The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws African skulls can have more rectangular shaped orbits when compared to European and Asian skulls. The nasal aperture is usually wide and the nasal bridge tends to be very flat. The jaw often protrudes significantly from the rest of the face, which is known as prognathism The Devil Berserker is a Legendary, Power skull that attacks with heavy hitting sword swings. It is the final and only Awakened form of Berserker. 1 Appearance 2 Basic Info 3 Passive 4 Swap Effect 4.1 Commence the Carnage 5 Skills 5.1 Bone of the Devil 5.2 Mad Axe 5.3 Mad Rush 5.4 Rage Tackle 6 Additional Content Devil Berserker wears a cream cloak, with more yellow on its outfit weilding a.

Types of Skull in Reptiles - YouTub

The skull or known as the cranium in the medical world is a bone structure of the head. It supports and protects the face and the brain. The adult skull has a total of 22 individual bones. They don't move and united into a single unit. The skull performs vital functions. Mainly, it supports and protects the head's soft tissues The human skull serves the vital function of protecting the brain from the outside world, as well as supplying a rigid base for muscles and soft tissue structures to attach to. The bones of the skull are held rigidly in place by fibrous sutures. In this article, we explore the bones of the skull during development before discussing their important features in the context of function and pathology The most effective means of identifying a skull to species is with the use of a dichotomous key. A dichotomous key allows a person, through a series of questions, to identify an organism to species by process of elimination. Plants, fish and even skulls can be identified using this method. Below is an example of a dichotomous skull key Amphibians & most reptiles - eardrum (tympanic membrane) is on surface of the head; Crocodilians, birds, & mammals - eardrum is deeper in the skull at the end of an air-filled passageway called the outer ear canal (or external auditory meatus) Mammals - pinna collects & directs sound waves; Middle ear of tetrapods - cavity plus ossicle(s) Homodont or isodont type of teeth is a condition where the teeth are all alike in their shape and size, e.g., the toothed whales (Odontoceti). Pinnipedians show a tendency towards homodont condition. Fishes amphibians reptiles and in the extinct toothed birds, the homodont or isodont condition is observed. Heterodont

Reptile - Skull and dentition Britannic

Anapsid type = stem reptiles & turtles; Diapsid type = rhynchocephalians, lizards, & snakes; Euryapsid type = extinct plesiosaurs. Temporal fenestration has long been used to classify amniotes. Taxa such as Anapsida, Diapsida, Euryapsida, and Synapsida were named after their type of temporal fenestration. Temporal fenestra are large holes in. To celebrate Earth Day, we are showcasing some of the amazing things here at Slide Ranch! In this video, we explore reptiles and their connections to other o.. Skull radiography is the radiological investigation of the skull vault and associated bony structures. Seldom requested in modern medicine, plain radiography of the skull is often a last resort in trauma imaging in the absence of a CT. However, it is still utilized in the setting of skeletal surveys. Occasionally it might be used as a magnified. Diapsids (two arches) are a group of reptiles that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the Late Carboniferous period. Living diapsids are extremely diverse, and include all crocodiles, lizards, snakes, and tuatara. Under modern classification systems, even birds are considered diapsids, since they evolved from diapsid. Evolution of Reptiles and Amphibians Evolution of Reptiles. Hylonomus is the oldest known reptile was about 8 to 12 inches long with origins 200 million years ago. The first true reptiles (Sauropsids) are categorized as Anapsids, having a solid skull with holes only for nose, eyes, spinal cord, etc. Turtles are believed by some to be surviving Anapsids

Large size; thick skull; quadrupedal posture Deuterosaurus is a good example of the family of therapsids (mammal-like reptiles) known as anteosaurs, after the poster genus Anteosaurus. This large, landbound reptile had a thick trunk, sprawling legs, and a relatively blunt, thick skull with sharp canines in the upper jaws Wikimedia Commons. Snakes, like other reptiles, have been around for tens of millions of years--but tracing their evolutionary lineage has been a huge challenge for paleontologists. On the following slides, you'll find pictures and detailed profiles of various prehistoric snakes, ranging from Dinylisia to Titanoboa. 02 The ethmoid bone forms the medial wall of the orbit, the roof of the nasal cavity, and due to its central location it articulates with numerous bones of the viscerocranium. Inside the neurocranium it articulates with the frontal and sphenoid bones. Frontal Bone. The frontal bone forms the front of the skull and is divided into three parts

Classification of ReptiliaSkull types in ReptilesB

  1. The axial skeleton forms the central axis of the body and includes the bones of the skull, ossicles of the middle ear, hyoid bone of the throat, vertebral column, and the thoracic cage (ribcage) (Figure 19.5). The function of the axial skeleton is to provide support and protection for the brain, the spinal cord, and the organs in the ventral.
  2. Bearded Dragons require low humidity levels because of their native desert habitat. The ideal humidity level ranges from 30-40%. If humidity is too high then your dragon will be susceptible to developing medical issues and respiratory infections. When humidity levels are lower than 30% your lizard will dehydrate
  3. How to identify mammal skulls. Spring and summer is a good time to look for mammal skulls. The end of winter is a peak period of mortality for many species, and skulls can be found virtually anywhere, but skull identification can be difficult
  4. Reptile slides at a further distance and will hit the airborne opponent with two kicks. In MKX, the enhanced version is called Slippery Slide, has armor, activates slightly faster and has Reptile recover from the attack quicker but becomes more vulnerable if the attack is blocked. Chameleon: Reptile disappears or reappears in a puff of smoke
  5. The scientific question of within which larger group of animals birds evolved has traditionally been called the 'origin of birds'. The present scientific consensus is that birds are a group of maniraptoran theropod dinosaurs that originated during the Mesozoic Era.. A close relationship between birds and dinosaurs was first proposed in the nineteenth century after the discovery of the.
  6. gia. One of many early vertebrates are Haikouichthys ercaicunensis.Unlike the other fauna that do
  7. Hippocrates, and later the Roman physician Galen, introduced the concept of the four essential fluids of the human body—blood, phlegm, bile, and black bile—the combinations of which produced the unique personalities of individuals (Butcher 29). Through the Middles Ages, mental illness was believed to result from an imbalance of these humors

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The pharyngeal arches (branchial arch, Greek, branchial = gill) are a series of externally visible anterior tissue bands lying under the early brain that give rise to the structures of the head and neck.Each arch though initially formed from similar components will differentiate to form different head and neck structures Humans have different types of teeth that perform various functions such as cutting, tearing, shearing, grinding and crushing. The teeth are powered by the jaw muscles and lubrication is done with the help of saliva, which is produced in the salivary glands. Vertebrates possess teeth that vary in structure and numbers A relatively complete skull of a Homo habilis which dates to 1.9 Million years old.. Homo habilis is the least similar to modern humans of all species in the genus Homo, and its classification as.

Reptilian Skulls Zoology for IAS, IFoS and other

Reptiles are the first amniotes, having eggs with extra embryonic membranes, which allow the embryo to develop on land. As we will see in the skull lab, a lot of the relationships are based on the holes in the skull called fenestrae, which are filled with jaw muscles and on the position of the temporal arches Types of Cancer and Treatment Below we discuss some of the more common veterinary oncology cases treated in our facilities. In addition to a description of the type of cancer and what causes it, the links below have information on diagnosis, various types of treatment available, prognosis and steps to prevent each type of cancer, if applicable Birth injuries are most commonly due to the natural forces of labor and delivery. In the past, when risks of cesarean delivery were high, doctors did difficult deliveries by pulling the fetus out using forceps (a surgical instrument with rounded edges that fit around the fetus's head). However, bringing the fetus down from high in the birth canal with forceps had a high risk of causing birth.

Ping pong skull fracture or pond skull fracture refers to a depressed skull fracture of the infant skull caused by inner buckling of the calvarium. It is seen in newborns because of the soft and resilient nature of their bones (like greenstick fractures of long bones) and the fracture line is not visualized radiologically To date, scientists have identified thousands of individual dinosaur species, which can be roughly assigned to 15 major families—ranging from ankylosaurs (armored dinosaurs) to ceratopsians (horned, frilled dinosaurs) to ornithomimids (bird mimic dinosaurs).Below you'll find descriptions of these 15 main dinosaur types, complete with examples and links to additional information Skull Key 6 Glossary of Terms Anterior- front of skull or lower jaw Auditory bulla- bony capsule enclosing middle ear Canine- elongate, unicuspid tooth Carnassial teeth- pair of bladelike teeth (last upper molar and first lower molar) that exhibit a shearing action Cheek teeth-combination of premolars and molars Dental formula- numerical representation of the number of each kind of tooth on on Skull_Skeleton_Lab3.doc 09/15/09 page 8 of 48 Laboratory 2 Worksheet: Teeth Mammalian teeth differ from teeth of earlier vertebrates, including most living reptiles in three general characteristics: Characteristic Early Vertebrate Mammal Toothrow Homodont Heterodont Mammal teeth differ from front t Protosaurs, Nothosaurs, Placodonts showed this type of skull. The two largest groups among these were- Ichthyosaurs and Plesiosaurus. These became extinct at the end of the Cretaceous period when several other reptiles including dinosaurs died. Diapsida. There are two temporal vacuities in the skull. They are diverse of all reptiles

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Note the different types of cartilage on display. They have different amounts of calcification, which is the addition of calcium salts, and differ in their fibre content. Cartilage is derived from mesenchyme and forms a matrix for bones, ends of bones, intercostals from ribs, nose, ears etc. Name and draw the three major types of cartilage While RH negatives are a small minority in the white and other races, and practically non-existent in orientals, the current Basques still are over 33 % RH negative. Another salient genetic feature is the shape and sutures (bone joints) of cranial bones of Basques (the Reptilian skull ridge) Reptiles possess a common cloaca, which receives the lower GI, reproductive, and urinary tracts. In addition, lungs are simpler and composed of variable complexity (faveolar, edicular, and trabecular structure), more like a cavitated sponge than alveoli. Lizards and chelonians are quadrupeds and have a familiar pentadactyl limb arrangement Mammalian Skeleton. Mammals are highly advanced vertebrate animals and have complex skeletons. The mammalian skeleton is important for protecting vital organs (e.g. heart, liver and brain) and for providing structural strength so mammals are able to grow into the largest and strongest animals on Earth

Most reptiles and birds belong to the group of diapsids, as they have two temporal holes in their skull. There are more than 14,600 extant species of birds and reptiles included in diapsids. That means; they are an extremely diversified group of animals, including crocodiles, lizards, snakes, tuatara, and birds Skull Fracture - With blunt object impacts, the concentrated force will produce localised failure of the skull. Two types of localised fracture can be produced. Depressed or 'cave in' type fracture produced by objects from 5 - 13 cm 2; Penetrating or 'punch through' failure produced by objects less than 5 cm

Skull island reptiles Geo Wiki Fando

Start studying Zoology Unit 6 compare and contrast anapsid, diapsid, and synapsid skull types (obj 2). Learn vocabulary, terms, and more with flashcards, games, and other study tools Archosauria (the ruling reptiles) is a major group of diapsids, differentiated from the other diapsids by the presence of single openings in each side of the skull, in front of the eyes (antorbital fenestrae), among other characteristics.This continues the tetrapod trend of the reduction of skull bones by the fusion of multiple bones and the opening of fenestrae in the skull The Vertebrate Skull consists of: 1 - neurocranium (also called endocranium or primary braincase) 2 - dermatocranium (membrane bones) 3 - splanchnocranium (or visceral skeleton) Neurocranium: 1 - protects the brain. 2 - begins as cartilage that is partly or entirely replaced by bone (except in cartilaginous fishes) Cartilaginous stage Reptile classification is a complicated and ever-changing thing (see challenges below). As much as possible, we have tried to organize our website around the four reptile orders listed above. This website is a living document that will change as needed to reflect changes / reclassifications in the reptile world A possible explanation of fenestration in the primitive reptilian skull, with notes on the temporal region of the genus Dimetrodon. Contributions from the Museum of Geology, University of Michigan 2: 1-12. Heaton M. J. 1979. Cranial anatomy of primitive captorhinid reptiles from the Late Pennsylvanian and Early Permian Oklahoma and Texas

When that happens, the skull will have an abnormal shape, although the brain inside the skull has grown to its usual size. Sometimes, though, more than one suture closes too early. In these instances, the brain might not have enough room to grow to its usual size. This can lead to a build-up of pressure inside the skull. Types of Craniosynostosi Types of Craniotomy Extended Bifrontal Craniotomy The extended bifrontal craniotomy is a traditional skull base approach used to target difficult tumors toward the front of the brain. It is based on the concept that it is safer to remove extra bone than to unnecessarily manipulate the brain Snakes have unique requirements from other types of pets. As such, they must have unique cages as well. The first and most obvious difference between reptiles and other pet animals is the heat factor. Snakes and other reptiles are ectothermic (a.k.a. cold-blooded). This means they get their heat from external sources like the sun and warm surfaces

Skulls in reptiles types of skull ~ BitsyTal

Skull Island reptiles; Skull Island theropod; References. This is a list of references for Skull Island bugs. These citations are used to identify the reliable sources on which this article is based. These references appear inside articles in the form of superscript numbers, which look like this: The many types of skull base tumors and conditions are classified by the type of tumor and its location in the skull base. Location of skull base tumors: Certain tumors and conditions tend to occur in specific areas of the skull base. The three main regions of the skull base and the tumors and conditions that occur there most commonly are Skull fracture. A skull fracture is a break in the skull bone. There are four major types of skull fractures, including the following: Linear skull fractures. This is the most common type of skull fracture. In a linear fracture, there is a break in the bone, but it does not move the bone

Download our Animal themes and customize your presentations in Google Slides and PowerPoint to inspire your audience Free Easy to edit Professiona (a) Anapsid Skull: Skulls that lack openings, known as temporal fenestrae, are anapsids. These include turtles, modern and prehistoric, as well as extinct reptile species. (b) Synapsid Skull: There is a single temporal fenestrae situated below the postorbital bone, in a similar position to the lower opening of a diapsid. Synapsid reptiles are. Division of Fishes The Division of Fishes of the Museum of Zoology is a research resource and teaching center dedicated to the study of fish evolution, phylogeny, distribution, ecology, and behavior. We have about 3.5 million catalogued specimens available for study. The collections are rich in specimens from the U.S., Mexico, Asia, Japan, the Neotropics, and Africa The evolution of amphibians. By the Devonian period two major animal groups dominated the land: the tetrapods (4-legged terrestrial vertebrates) and the arthropods, including arachnids and wingless insects. The first tetrapods were amphibians, such as Ichthyostega, and were closely related to a group of fish known as lobe-finned fish e.g. Eusthenopteron Type I (CM-I). This is the most common type. Part of the cerebellum dips down through the bottom of the skull. This type is most often congenital (also called primary CM), but is often not found until a child is a teen or young adult. In rare cases, this type may also develop later in life

Burmese amber with the skull of a tiny dinosaur species called Oculudentavis. The skull is 99 million years old, nearly perfectly preserved inside. Xing said the piece of amber was bought in. Evidence shows our brains and faces have gotten smaller. The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size. (Staff illustration by Alec Solomita Jim's Gun Supply I'll Get You Loaded 1000 8th Street Baraboo, WI 53913 1-608-393-430 Reptile skin heals much more slowly than mammalian skin, often taking about 6 weeks for the defect to be fully restored. Infections Reptiles, being reptiles, do not have hair follicles. Not having hair follicles means they don't get complications that hair follicles get - like acne (pimples) Traumatic brain injuries at the base of the skull can cause nerve damage to the nerves that emerge directly from the brain (cranial nerves). Cranial nerve damage may result in: Paralysis of facial muscles or losing sensation in the face. Loss of or altered sense of smell or taste. Loss of vision or double vision