All of the following have been suggested as triggers for the Cambrian radiation of complex metazoans except: perhaps the Cambrian metazoans outcompeted the Ediacaran metazoans, opening up new ecological niches to fill perhaps a series of fortuitsus genetic changes provided more raw material for natural selection to act upon perhaps increased oxygen in the world ocean promoted the evolution of compiex body forms perhaps the rise in sea level that flooded the margins of the continents during the earliest Paleozoic created abundant new ecological niches, promoting biodiversity perhaps the "arms race" between predator and prey spurred evolutionary innovation

Q: What factors are necessary for fossils to occur? I. Abundant Members II. Exist for a long time III.…

A: Introduction A fossil is preserved remains impression of any once-living thing from a past…

Q: Describe in detail 5 ways to preserve material for the fossil record.  List the 3 types of life…

A: Fossils are the preserved remains, or traces of remains, of ancient organisms.

Q: Draw a phylogenetic diagram showing the interrelationships among the following groups: Diapsida,…

A: A phylogenetic tree, sometimes called a phylogeny, is a visual representation of how several…

Q: Find an animal on the phylogenetic tree and classify it as either ecdysozoa or lophotrochozoan?

A: Ecdysozoa is a group of protostome that shed exoskeleton throughout their lifespan. Nematoda and…

Q: Bivalvia: Gastropoda: Cephalopoda: Nautiloidea: Ammonoidea: Coleoidea: Belemnitida: Mollusca: MYA…

A: Geological time scale is one type of calendar or tool by which we can understand the event of earth…

Q: what does the Cambrian “explosion” refer

A: The early phase of the Paleozoic era that started 541 million years ago and lasted up to 485.4…

Q: Approx how many mass extinction events occurred throughout the evolutionary history of animals

A: Biodiversity is the diversity of biological life forms present in three forms of genetic,…

Q: The oldest fossils of human ancestors found in this area at 700,000 years old. andrewsaechus what is…

A: Every preserved bones, impression, or residue of a once-living thing from a previous geological…

Q: Pterosaur wings were... (Select all that apply) feathered skin supported by the fourth digit of the…

A: Question 1: Pterosaurs were a group of vertebrate flying reptiles. They had hair-like feathers which…

Q: Euparkeria lived during which time period * O Ordovician O Triassic O Cretaceous Paleocene Jurassic

A: There are different areas that are divided on the basis of life and the existence of different…

Q: Silurian Rhudering nStage Ordovician Period Hirnantian Stage Rawtheya n Stage A. ascensus N.…

A: The data suggest that extinctions were brought on by climate change. This is believed to have had a…

Q: The Cenozoic Era is often referred to as the "Age of Mamm What primary geological and evolutionary…

A: The four eras are Precambrian, Paleozoic, Mesozoic, and Cenozoic. Prominent events that happened in…

Q: The Precambrian is characterized by several major evolutionary milestones. Which of the following is…

A: The great majority of Earth's history occurs during the Precambrian period, which began with the…

Q: ''Cambrian Explosion'' What contributed to this explosion of life? What were Earth conditions like…

A: Cambrian explosion was the rapid and unparalleled rise of the organisms at the beginning of the…

Q: What kind of community interaction encouraged the Cambrian Explosion and contributed to…

A: The Cambrian Explosion is most significant in the history of evolution because it marks the sudden…

Q: Which of the following statements is incorrect in the context of fossilization? Minerals dissolved…

A: The process in which part or whole of animal or plant is being preserved in hard form is known as…

Q: Ardipithecus ramidus lacked the specialized teeth seen in living apes (such as exaggerated canines).…

A: Any animal or plant retained in the Earth's geological record that is representative of a specific…

Q: When an organism exhibits ____________ growth, its fecundity ________ with age, until senescence.…

A: Correct answer: Option b determinate, decreases is the correct answer because in determinate growth…

Q: Given the nautiloid suture pattern what can you infer about their habitat in the past and present?

A: Living beings, according to numerous "evolutionary theories," modify their physical and anatomical…

Q: Which organism is most likely to fossilize? OA tropical frog A forest dwelling lizard All animals…

A: Organisms should have a hard, bony skeleton for them to leave a fossil behind. Lizards and…

Q: . One of the explanations for the diversity seen in the fossils corresponding to the Cambrian…

A: The adaptations that arose within the Cambrian were mainly for cover and predation. If one animal…

Q: Use the traits given in the completed character matrix to build a phylogeny of the six species (this…

A: Phylogenetic tree shows the developmental and evolutionary history of a species based upon its…

Q: Which of these lists is in the correct order, starting at 550 mya to 50 mya: Cambrian explosion,…

A: The correct list is:Cambrian explosion, multicellular organisms first appear, radiation of reptiles,…

Q: Most fossils ___.   have been formed by exposure to air   are found in sedimentary layers of rock…

A: A fossil is anything of past geological age which was preserved. A fossil could be anything like…

Q: The Cambrian Explosion occurred due to the widespread adoption of bilateral symmetry and the…

A: INTRODUCTION The Cambrian explosion or Cambrian radiation was an occasion approximately 541 million…

Q: Match the animal taxa (group) to the correct adaptation. radial cleavage of embryo, do not develop a…

A: 1/ Radial cleavage of embryo, do not develop a yolk egg, must have a larval stage before adul: The…

Q: In the figure below which letter is pointing to the ZYGOMATIC ARCH

A: The skull is an important and anterior component of the axial skeleton that houses the components of…

Q: Find the animal on the phylogenetic tree and classify it as either metazoan or eumetazoa,…

A: Classification is a process by which anything is grouped into convenient categories based on some…

Q: How is a mass extinction event indicated in the Tree of Life? Significant gaps on the tree are…

A:

Q: Why are simpler structures considered ancestral when we study phylogeny? * 1 point       Complex…

A: In the course of evolution, the living organism have started from a mere cell and that too…

Q: The stone tool industry from the Lower and Middle Pleistocene modified from the first tool industry…

A: The stone tool industry from the Lower and Middle Pleistocene is characterized by the production of…

Q: Imagine you come across a colonial organism. Determine whether it is a class Hydrozoan or a…

A: Hydrozoa and Anthozoa are the classes of Coelentertes. These are multicellular organisms showing…

Q: Find the animal on the phylogenetic tree and classify it as either protostome or deuterostome, and…

A: Animals that undergo protostome during their embryonic development are called as Protostomes.

Q: construction project required digging hundreds of feet into the ground, which exposed many discrete…

A: Theory of evolution: Evolution is a biological process involving the change and adaptation of all…

Q: Table 10: Some Important Events in Geologic Time Era Period Triassic Epoch Event Age of Reptiles…

A: * Modern mammals have evolved from preceeding animals . * Formation of modern humans from azoic era…

Q: Trilobite fOS the P-T extinction. They are not fou 12. Explain one inference you can make about…

A: The fossil records demonstrate the geologic time periods. The image shows the cliff in Palo Duro…

Q: why is it not 55-34; Eocene if the Eocene period was 55 million - 34 million years ago as opposed to…

A: The Euprimates are the modern primates with characteristics of grasping hands and feet, and reduced…

Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.