Paleontology Questions
Explore questions in the Paleontology category that you can ask Spark.E!
______________ is the number of different types of non-avian dinosaur genera over time.
The total number of known dinosaur genera is estimated today at about
Marine-adapted lizards called ______________ went extinct geologically abruptly, at the end of the Cretaceous.
The whale- and dolphin-like marine diapsids called ______________ are known to have disappeared well before the K-Pg boundary.
The earliest mammals - tiny, shrew-sized, insectivorous creatures - appeared on Earth
________________ are people who study extinct plants.
When faunas develop in relative isolation and become distinct, this type of distinctness is called
At the K-Pg boundary there was observed a rapid and complete breakdown in ___________________ between surface and deep waters, to less than 10 per cent of what it had been
______________ is the chemical reactions and pathways an organism uses to obtain energy and put it to work.
_________________ are lineages that must have existed that have so far not left a physical record (through fossils) of their existence.
The pattern of waxing and waning in dominance, as one group supersedes another in evolutionary time, is called
At the end of the Triassic, dinosaurs became the dominant ______________________, meaning they became the most abundant, diverse, and visible group of tetrapods.
A ________________ is an amphibian from the Cretaceous Antarctic assemblage that apparently went extinct in the Early Jurassic everywhere else in the world.
Gymnosperms and angiosperms are united by the diagnostic character of possessing _________, which are nutrient-bearing pods developed for the dissemination of gametes.
Most land plants are ____________, in that they possess specialized tissues that conduct water and nutrients throughout the plant.
The ________________ is the inescapable fact that, as we get closer and closer to the Recent, fossil biotas become better and better known.
Endothermic tetrapods are capable of higher levels of activity over longer periods of time; it takes longer for the muscles of endotherms to enter the anaerobic physiological state characterized by ______________ production.
Bones grow by remodeling, which involves the resorption (or dissolution) of bone first laid down, and redeposition of a kind of bone called
Organisms change proportions as they increase in size; this is called
Secondary bone is deposited in the form of a series of vascular canals called