Many lines of evidence, including biochemical evidence, show that living birds are direct descendants of dinosaurs. A number of dinosaur lineages had feathered dinosaurs, not just the lineage that includes living birds. Do you think that is it justified to believe that all feathered dinosaurs had behaviors known from living birds? Such behaviors of birds include colonial nesting, sexual displays by males using feathers, males moving to display their ornamental feathers to female mates. Give a brief reason for your answer.
Many lines of evidence, including biochemical evidence, show that living birds are direct descendants of dinosaurs. A number of dinosaur lineages had feathered dinosaurs, not just the lineage that includes living birds. Do you think that is it justified to believe that all feathered dinosaurs had behaviors known from living birds? Such behaviors of birds include colonial nesting, sexual displays by males using feathers, males moving to display their ornamental feathers to female mates. Give a brief reason for your answer.
Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter51: Animal Development
Section: Chapter Questions
Problem 15TYU
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Question
Many lines of evidence, including biochemical evidence, show that living birds are direct descendants of dinosaurs. A number of dinosaur lineages had feathered dinosaurs, not just the lineage that includes living birds. Do you think that is it justified to believe that all feathered dinosaurs had behaviors known from living birds? Such behaviors of birds include colonial nesting, sexual displays by males using feathers, males moving to display their ornamental feathers to female mates. Give a brief reason for your answer.
![FIGURE 17.24 Phylogenetic relation-
ships and temporal duration (thick bars)
of major groups of amniote vertebrates.
Some authors define "reptiles" as one
of the two major lineages of amniotes,
the other being the synapsids, which
includes mammals. (After [53].)
Mammals
Therapsids
Pelycosaurs
Mesosaurs
Procolophonids
Pareiasaurs
Captorhinids
Turtles
Protorothyridids
Crocodilians
Pterosaurs
Dinosaurs (including birds)
Ichthyosaurs
Rhynchocephalians (tuatara)
Squamates (lizards and snakes)
C
P
Tr
K
Pg
Ng
359
299
252
201
145
66
23 Present
Paleozoic
Mesozoic
Cenozoic
Time (Mya)
JOrnithodirans
Lepidosaurs
Archosaurs
Lepidosauromorphs
Archosauromorphs
Parareptiles
Diapsids
Reptiles
Synapsids
Amniotes](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff524b5f9-eec1-4e92-a626-522932ca5be8%2Ff090c40e-4ea5-48f4-a747-464d20ec987e%2F1k830rr_processed.png&w=3840&q=75)
Transcribed Image Text:FIGURE 17.24 Phylogenetic relation-
ships and temporal duration (thick bars)
of major groups of amniote vertebrates.
Some authors define "reptiles" as one
of the two major lineages of amniotes,
the other being the synapsids, which
includes mammals. (After [53].)
Mammals
Therapsids
Pelycosaurs
Mesosaurs
Procolophonids
Pareiasaurs
Captorhinids
Turtles
Protorothyridids
Crocodilians
Pterosaurs
Dinosaurs (including birds)
Ichthyosaurs
Rhynchocephalians (tuatara)
Squamates (lizards and snakes)
C
P
Tr
K
Pg
Ng
359
299
252
201
145
66
23 Present
Paleozoic
Mesozoic
Cenozoic
Time (Mya)
JOrnithodirans
Lepidosaurs
Archosaurs
Lepidosauromorphs
Archosauromorphs
Parareptiles
Diapsids
Reptiles
Synapsids
Amniotes
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