Age of Dinosaurs: Topic 35 – Flashcards

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question
Swimming propulsion of plesiosaurs was provided by the _______
answer
Giant paddles
question
True/False: The first ichthyosaurs appeared during the Middle Triassic
answer
False
question
True/False: Plesiosaurs evolved during the Late Triassic and became extinct at the end of the Cretaceous (same time as dinosaurs)
answer
True
question
True/False: Ichthyosaurs have short arms with strong limb girdles used for swimming
answer
False
question
True/False: As with other plesiosaurs, the Pliosaurs also had large eyes, slightly forward, giving them overlapping fields of vision and the depth perception that comes with it.
answer
True
question
True/False: Fossil evidence reveals that some mosasaurs were cannibalistic.
answer
True
question
Some have likened this marine reptile to being a sauropod of the deep because of its long neck
answer
Elasmosaurus
question
All plesiosaurs had _________, or belly ribs, that interlocked and supported the belly
answer
gastralia
question
Propulsion of mosasaurs through the water was accomplished by _____
answer
undulation of the eel-like tail
question
The sclerotic ring is a doughnut-shaped bone surrounding the________
answer
Eye
question
True/False: Elasmosaurus had large skulls and short necks.
answer
False
question
True/False: Based upon the size of ichthyosaurs, it is estimated as capable of diving to a depth of 600 meters and coming back to the surface in 20 minutes.
answer
True
question
The geologic range of mosasaurs is restricted to what period?
answer
Cretaceous
question
True/False: Ichthyosaur fossils have been found on most continents.
answer
True
question
The ancestry of ichthyosaurs is uncertain but they most likely are related to the _______, a group including dinosaurs, birds, pterosaurs, lizards, snakes, etc.
answer
Diapsids
question
True/False; Ichthyosaurs were extinct when Mosasaurs evolved
answer
True
question
True/False; The diet of mosasaurs also included a great deal of squid-like cephalopods, particularly of the now extinct ammonites and belemnites
answer
True
question
True/False: Like turtles, ichthyosaurs were egg-layers
answer
False
question
True/False: Ichthyosaurs preceded dinosaurs by some 20-30 million years
answer
True
question
Skulls of some mosasaurs were found with a __________, a scent sniffer used by snakes and lizards
answer
Jacobson's organ
question
Ichthyosaurs were extinct when Mosasaurs evolved.
answer
True
question
Ichthyosarus preceded dinosaurs by some 20-30 million years.
answer
True
question
As with other plesiosaurs, the Pliosaurs also had large eyes, slightly forward, giving them overlapping fields of vision and the depth perception that comes with it.
answer
True
question
Based upon the size of ichthyosaurs, it is estimated as capable of diving to a depth of 600 meters and coming back to the surface in 20 minutes.
answer
True
question
The geologic range of mosasaurs is restricted to what period?
answer
Cretaceous
question
Like turtles, ichthyosaurs were egg-layers.
answer
False
question
The sclerotic ring is a doughnut-shaped bone surrounding the ____.
answer
Eye
question
Ichthyosaurs have short arms with strong limb girdles used for swimming.
answer
False
question
Some have likened this marine reptile to being a sauropod of the deep because of its long neck.
answer
Elasmosaurus
question
Plesiosaurs evolved during the Late Triassic and became extinct at the end of the Cretaceous (same time as dinosaurs).
answer
True
question
Propulsion of mosasaurs through the water was accomplished by ____.
answer
Undulation of the eel-like tail
question
Skulls of some mosasaurs were found with a ____, a scent sniffer used by snakes and lizards.
answer
Jacobson's organ
question
The ancestry of ichthyosaurs is uncertain but they most likely are related to the ____, a group including dinosaurs, birds, pterosaurs, lizards, snakes, etc.
answer
Diapsids
question
Fossil evidence reveals that some mosasaurs were cannibalistic.
answer
True
question
Elasmosaurs had large skulls and short necks
answer
False
question
Swimming propulsion of plesiosaurs was provided by the ____.
answer
Giant paddles
question
The diet of mosasaurs also inclined a great deal of squid-like cephalopods, particularly of the now extinct ammonites and belemnites.
answer
True
question
The first ichthyosaurs appeared during the Middle Triassic.
answer
False
question
Ichthyosaur fossils have been found on most continents.
answer
True
question
All plesiosaurs had ___, or belly ribs, that interlocked and supported the belly.
answer
Gastralia
question
True
answer
Ichthyosaurs were extinct when Mosasaurs evolved.
question
True
answer
Ichthyosarus preceded dinosaurs by some 20-30 million years.
question
True
answer
As with other plesiosaurs, the Pliosaurs also had large eyes, slightly forward, giving them overlapping fields of vision and the depth perception that comes with it.
question
True
answer
Based upon the size of ichthyosaurs, it is estimated as capable of diving to a depth of 600 meters and coming back to the surface in 20 minutes.
question
Cretaceous
answer
The geologic range of mosasaurs is restricted to what period?
question
False
answer
Like turtles, ichthyosaurs were egg-layers.
question
Eye
answer
The sclerotic ring is a doughnut-shaped bone surrounding the ____.
question
False
answer
Ichthyosaurs have short arms with strong limb girdles used for swimming.
question
Elasmosaurus
answer
Some have likened this marine reptile to being a sauropod of the deep because of its long neck.
question
True
answer
Plesiosaurs evolved during the Late Triassic and became extinct at the end of the Cretaceous (same time as dinosaurs).
question
Undulation of the eel-like tail
answer
Propulsion of mosasaurs through the water was accomplished by ____.
question
Jacobson's organ
answer
Skulls of some mosasaurs were found with a ____, a scent sniffer used by snakes and lizards.
question
Diapsids
answer
The ancestry of ichthyosaurs is uncertain but they most likely are related to the ____, a group including dinosaurs, birds, pterosaurs, lizards, snakes, etc.
question
True
answer
Fossil evidence reveals that some mosasaurs were cannibalistic.
question
False
answer
Elasmosaurs had large skulls and short necks
question
Giant paddles
answer
Swimming propulsion of plesiosaurs was provided by the ____.
question
True
answer
The diet of mosasaurs also inclined a great deal of squid-like cephalopods, particularly of the now extinct ammonites and belemnites.
question
False
answer
The first ichthyosaurs appeared during the Middle Triassic.
question
True
answer
Ichthyosaur fossils have been found on most continents.
question
Gastralia
answer
All plesiosaurs had ___, or belly ribs, that interlocked and supported the belly.
question
true
answer
Ichthyosaurs preceded dinosaurs by some 20-30 million years.
question
gastralia
answer
All plesiosaurs had (blank), or belly ribs, that interlocked and supported the belly.
question
false
answer
The first ichthyosaurs appeared during the Mid Triassic
question
eye.
answer
The sclerotic ring is a doughnut-shaped bone surrounding the
question
true
answer
Based upon the size of ichthyosaurs, it is estimated as capable of diving to a depth of 600 m and coming back to the surface in 20 minutes.
question
true
answer
Fossil evidence reveals that some mesosaurs were cannibalistic.
question
giant paddles.
answer
Swimming propulsion of plesiosaurus was provided by the
question
false
answer
Elasmosaurs had large skulls and short necks.
question
false
answer
Like turtles, ichthyosaurs were egg-layers.
question
true
answer
Plesiosaurs evolved during the Late Triassic and became extinct at the end of the Cretaceous (same as dinosaurs).
question
false
answer
Ichthyosaurs have short arms with strong limb girdles used for swimming.
question
elasmosaurus
answer
Some have likened this marine reptile to being a sauropod of the deep because of its long neck.
question
true
answer
The diet of mosasaurs also included a great deal of squid-like cephalopods, particularly of the now-extinct ammonites and belemnites.
question
true
answer
As with other plesiosaurs, the Pliosaurs also had large eyes, slightly forward, giving them overlapping fields of vision and the depth perception that comes with it.
question
true
answer
Ichthyosaurs were extinct when Mosasaurs evolved.
question
Jacobson's organ
answer
Skulls of some mosasaurs were found with a (blank), a scent sniffer used by snakes and lizards.
question
diapsids
answer
The ancestry of ichthyosaurs is uncertain but they most likely are related to the (blank), a group including dinosaurs, birds, pterosaurs, lizards, snakes, etc.
question
Cretaceous
answer
The geologic range of mosasaurs is restricted to what period?
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