Science test Flashcards
(43 cards)
what type of fossils are the overwhelming majority of fossils
marine organisms
a fossilzed track or burrow made by an animal would be called a trace fossil
true
one possible reaons for the variety of speacies in the la brea tar pits is that once animals died there scavengers came were trapped and died there as well
true
fossils can be found only in sedimentary rocks
false
what process forms petrified wood
replacemtn
which of these is a porpoise lik emarine reptile archaeoteryx ichthyosaurus
ichtyyosaurus
which of thse if fossilzed would be considered microfossils animal droppings pine needls plant spores
plant spores
decay can prevent a dead orgaims form bieing fossilzed
true
the classification system used for fossils is the sma eon e used for living oragnaims today
true
is a mineraliazed form of tree sap and may contain invertebartes ad evn some small vertebrates
amber
fossils that seem to appear reliably in the proper geologic sequence and that are used by secular geologists to determine the age of rock starat are called what
index fossils
what remarkable discovery came form the examination of a thigh bone of a 68 million year old t rex fossil in 2005
soft tissues
what is the name of the study of fossils
paleontolgist
fossils often appear out of order in the geolgic column
true
the origin of species was authored in 1859 by who
chalres darwin
who develped the styem used today to classify organims
carolus linnaeus
old earth geologists assign rocks in lower level scoantin simple fossil _____ ages than those ones coanting complex fossils
older
what is the name of an extint fossil fish that was found to still be alive
a coelacanth
fossils showing organims that are in the process of evolving form one form to another are known as what
transitional forms
what is said to be the link between reptiles and birds
archaeopteryx
if archaeopteryx were found alive today it would most likely be calssified as a what
bird
when the population of a species begins to shrink due to having more deaths than births in a generation it is possibly headed toaward what
extinction
evolutinary scientsis have identified two major extinctio events in teh las 500 million years by studying the geologic column
false
which of thse is asquid like naimal with coilded chambered shell ammonite ichthyosaus
ammonite