Amniotes are divided into three groups based on their skull mor-phologies. What are these three groups, and how do their skulls dif-fer? Which living amniotes, if any, originated from each of these three groups?

Q: skull evolution associated with

A: The evolution of the skull is associated with the evolution of early humans such as hominoid. The…

Q: Which of the following characteristics evolved independently in mammals and birds? bone endothermy…

A: Mammals are a group of vertebrate animals constituting the class Mammalia and characterized by the…

Q: What are the characteristics of the anamniotes which differentiate them from amniotes?

A: Amniotes are the vertebrate organisms that includes reptiles, birds and mammals. They are the…

Q: Draw a skull of a mammal and identify which parts are the Chondrocranium or Nuerocranium,…

A: The embryonic parts of the mammalian skull are:  Chondrocranium (Nuerocranium): it is made up of…

Q: Amphioxus does not possess a vertebral column? yes or no?

A: Amphioxus  They are also known as lanceolate and belonging to the group of invertebrate animals.

Q: a. List the characteristics of chordates. What were the circumstances that forced them to evolve…

A: Answer :: a) Chordate is a phylum in animal kingdom which includes Urochordata, Cephalochordata and…

Q: According to the phylogeny of vertebrae's, which came first, the chicken or the egg and why?

A: All chickens hatch from the eggs and all chicken eggs are laid by chickens. Chicken and egg is a…

Q: Does this skull represent a member of the Order: Primates? What information supports your answer?…

A: Yes this skull is member of order : primates  Parapithecus grangeri  It was found in African…

Q: adrosaur how tough is their skin for large predators

A: study Explains Prevalence of Hadrosaur Skin Among All Known Dinosaur Skin Fossils At right is a…

Q: Scales of modern teleosts differ from the ancestral state in that they _____.     are thicker and…

A: They are the members of actinopterygians.  They are marked by the body rays on their fins.…

Q: Identify the four morphological characteristics unique tothe chordates.

A: The morphological features can be defined as the outer features that is visible. The organisms…

Q: In salamanders, sirens, hellbenders, amphiumas and mudpuppies, the caudal vertebrae extend backward…

A: Mudpuppy and frogs are amphibians. But there are differences in the locomotion of both these…

Q: Name the second and first vertebrae of a Lizard?

A: Lizard is widespread group of squamate reptiles. Most lizards are quadrupedal , running with a…

Q: You are searching for hominin fossils in Africa and discover a skull with a sagittal keel, an…

A: Introduction : The fossil record of hominins includes all fossil taxa that are more closely related…

Q: Professor Andrew, a paleontologist discovers a transitional fossil between a stem amniote and…

A: Fossils are the preserved remains or traces of organisms (plants, animals, etc.) from the past.…

Q: Hadrosaur is May have been the only _____ dinosaurs

A: Step 1 The Mesozoic era had witnessed both rise and fall of reptiles. A large number of ruling…

Q: Explain how a cladistic classification for the vertebrates produces important regroupings of the…

A: Introduction  Taxonomy is the branch of science which deals with the classification of animals in…

Q: origin of tetrapods.

A: Answer: All tetrapod limbs have a common pattern of one bone, two bones, many bones, then digits.…

Q: All Gnathostomes have: I) mineralized teeth II) lung derivatives II) vertebrae O A. I & II B. I &…

A: Gnathostomes belongs to kindom- animalia, phylum- chordata. includes both cartilaginous & bony…

Q: Neanderthal anatomy traits include which of the following? O 1. Gracile skeleton, prognathic…

A: Neanderthals are an extinct species or subspecies of archaic humans who lived in Eurasia.

Q: What differences in morphology among Osteolepiformes (Eusthenopteron), Tiktaalik, and Ichthyostega.…

A: Osteolepiforme- Long and slender, with posterior fins set far back and a long mouth lined with…

Q: identify the common name of this animal's skull?

A: Skull is the bony structure present superior to the brain, it is the protecting shield that protects…

Q: 30. Class Aves evolved from Jurassic dinosaurs belonging to which of the following chordate groups?…

A: The birds or the aves were cosidered to be evolved fromthe jurassic dinosaurs of clade Therapoda.…

Q: According to the fossil record, what did the common ancestors of all tetrapods (four-limbed animals)…

A: Modern day tetrapods includes including whales, lizards, humans, and birds, and a number of other…

Q: Briefly point out two differences between the shark and Amia skulls

A: Skull can be divided into 2 parts : visceral and cranial. Cranial skull is skull proper. Two…

Q: What does APODA mean? O A. Without true bone B. Without jaws C. Without teeth. O D. Without legs E.…

A: The term poda is used as a suffix in the name of the class of organisms that have limbs or legs.…

Q: Characterized by a pelvis with the pelvic bones radiating from the center Ichthyosaurs Plesiosaurs…

A: Dinosaurs These are a diverse group of reptiles belonging to the clade Dinosauria. They first…

Q: One difference between reptile skulls and mammal skull is that; Reptiles do not have eye sockets…

A: Skull of reptiles have monocondylic skull, many bones in lower jaws.  Skull of mammal have only one…

Q: Describe three important differences between the skeletons of the crayfish and the pig.

A: SOME BASIC INFORMATION  SKELETON  It is a structure which is formed by bones  It basically forms the…

Q: Question: All members of Chordata have true vertebrae.   True or False?

A: Animalia is the most advanced and complex kingdom among all the other kingdoms. The body has tissue…

Q: J. Napolitano

A: Skull is the first and important structure that is used for identification of fossils. Detailed…

Q: Which of the following is NOT a defining chordate characteristic? O post-anal tail O vertebrae O…

A: Introduction Chordates belong to the kingdom Animalia. They are group of animals which include…

Q: How is the skeleton of a sea urchin like the skeleton of a lobster? How is it different?

A: Higher invertebrates phyla consist of animals taking Higher positions in the phylogenetic tree of…

Q: Which of the following occurs only in chordates O A. notochord O B. pharyngeal gills O C. dorsal…

A: All options are correct . chordates have all these .

Q: How does Anterior posterior axis gives chordate and higher non chordates a bilateral symmetry

A: Organisms having bilateral symmetry have a single plane of symmetry. The plane is called sagittal…

Q: An antorbital fenestra and external mandibular fenestra are synapomorphies of archosaurs true false

A: Need to find whether the given statement is true and not regarding archosaurs.

Q: imbs of primates and bats have similar skeletal structures bu

A: Evolution: It is the process in which the characteristics of an organisms changes over time.

Q: Which of the derived characteristics came into existence before the bony shell?

A: Cladogram is a diagrammatic representation which correlates the evolutionary relationships among…

Q: What are the key evelutionary trends and other developments in early Homo?

A: Homo erectus  is the extinct species of humans from the Pleistocene period which was about 2…

Q: How is the skeleton of a sea urchin like the skeleton of a lobster? How is it different?    Sea…

A: The multicellular heterotrophic eukaryotic organism without a cell wall are grouped into kingdom…

Q: What can be inferred about the evolution of the cranium and vertebral column from examining…

A: Introduction: The evolutionary process can be better understood through developmental biology and…

Q: Which of the following is NOT a derived feature of the Neandertal skull? a   juxtamastoid crest b…

A: There are many point of differences between neanderthal anatomy and the modern day humans.

Q: Compare the types and numbers of primary (deciduous) teeth present in the pig’s maxilla with those…

A: The deciduous teeth or primary teeth are the temporary teeth that develop at the embryonic stage and…

Q: Prestosuchus chiniquensis was a predatory animal from the Triassic Period most closely related to…

A: Prestosuchus is a wiped out ( extinct) family of pseudosuchian in the group Loricata, which…

Q: (a). Describe the adaptations on the body of amniotes to fully live on land. S

A: According to our guidelines, only 1st question can be answered and rest of the questions can be…

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.