PPT-Fossils Anatomy Embryology

Biochemistry Evidence for Evolution Darwin Predicted Because new species form from existing species there should be intermediate stages found in the fossil record Fossils Evolution determines . B-5.5: Exemplify scientific evidence in the fields of anatomy, embryology, biochemistry, and paleontology that underlies the theory of biological evolution.. B-5.6: Summarize ways that scientists use data from a variety of sources to investigate and critically analyze aspects of evolutionary theory.. Cornell Notes pg. 137. What is a Fossil?. Preserved remains or traces of plants, animals, and other organisms.. Types of Fossils:. mold fossils.  (an impression made in the rock- like a footprint in sand). What are fossils?. FOSSILS. . are. . the . preserved remains or . traces.  of animals, plants, and other organisms . that lived long ago.. When an organism dies, hard parts of the animal (bones, teeth, shells, etc.) can be preserved in rock.. Remains . of once living organisms.. Form from decay and are buried by sediment.. Sediment hardens into rock and preserves the shape of the organisms.. Fossils. Fossils . Remains. Molds. . Casts. . Dr. . Jagdish. . kaur. P.G.G.C.,Sector. 11. , Chandigarh. . . SIMPLY THE CHANGES OVER TIME. EVOLUTION. Human Evolution. The evolutionary timeline is divided into sections of time called eras – which are then divided into smaller units of time called periods.. From Egg to Embryo. A. Terms. 1. Pregnancy – events occurring from the time of fertilization (conception) until the infant is born. 2. Gestation period – extends from the last menstrual period until birth (280 days). Molds and Casts. Carbon Films. Preserved Remains. Trace Fossils. Petrified Fossils - . How do they form?. Mineral rich water soaks into cracks and crevices. Minerals “precipitate” and fill the spaces. Evidence. Evidence. . of . common ancestry . among species comes from many sources.. . 2. #1 Fossil Evidence. . Fossils. Earth is . Millions. of years old!. Fossils in . older layers . are . more primitive . Can you name any dinosaurs?. Do you know what they looked like or how they moved?. Scientists have been able to tell us many things about organisms (such as dinosaurs) that lived millions of years ago.. Fossils have helped determine approximately when life first appeared, when plants and animals arrived on land, and when organisms became extinct.. CONDITIONS NEEDED FOR FOSSIL FORMATION. Whether or not a dead organism becomes a fossil depends upon how well it is protected from scavengers and agents of physical destruction, such as waves and currents.. Fossils, Geologic Time, Absolute & Relative Dating, and Natural Resources Chapters 5 & 6 How Do Fossils Form? Fossils are found in sedimentary rocks like sandstone, limestone, and shale In Virginia, most fossils are structural . organisation. Anatome. (. ana. =up. . tomy. =cut) . Anatomise. Dissection. Practical applied science which forms firm foundation of art of healing(medicine). BSc 4. th. Semester (Open Elective). Fundamentals . of Geology (BOE). OPEN ELECTIVE COURSE (OTHER THAN GEOLOGY MAIN STUDENTS. ). Dr Abdullah Khan. Associate . Professor . Department of Geology. AMU. By: . Dr. Ammar Ismail. Introduction:. Anatomy. :( Greek word). Ana -------- a part. Tomy. ------- cut . Anatomy: . is the study of the structures of a body and relation of its parts. The subject is usually studied by dissection and observation..