Fossil Symmetry Flashcards
Explain and draw what RADIAL SYMMETRY looks like
A radially symmetrical organism can be divided into halves which are mirror images by
an infinite number of radially positioned planes. Like a bicycle tire with spokes.
Explain and draw BILATERAL SYMMETRY
A bilaterally symmetrical organism can be divided into halves which are mirror images by one plane passing through a certain location.
Explain and draw BRACHIOPOD BILATERAL SYMMETRY ACROSS THE VALVE
For Phylum Brachiopod, the plane of symmetry (bilateral) passes through the center of each valve (shell) so that one half of each valve is the mirror image of the other half.
explain and draw BIVALVE BILATERAL SYMMETRY
In Phylum Mollusca, Class Bivalve, the plane passes between the two valves so that the valves are mirror images of each other. So, there is bilateral symmetry between the
valves.
Explain and draw PENTAMERAL SYMMETRY
Pentameral symmetry, also referred to as pentaradiate symmetry, is a five-way
symmetry, like a starfish. This is the symmetry we find associated with Phylum
Echinodermata. This is different from radial symmetry.
Explain and draw CONISPIRAL BODY FORM
Certain fossils can be identified on the basis of their pattern of coiling and there are two types of coiled body forms. One of those forms is conispiral where the coiled structure shifts upward with each coil to form a point.
Phylum Mollusca, Class Gastropoda has conispiral or upward coiling structure (like soft serve ice cream).
explain and draw PLANISPIRAL BODY FORM
The second coiling form that is used to identify fossils is planispiral where each coil encircles that last one forming a flat coil in a single plane.
Phylum Mollusca, Class Cephalopoda shows this planispiral body form or flat coiling. This appears two dimensional, like coiling a garden hose so that one loop does not rise above another.
Explain and draw SUTURE PATTERNS
Within Phylum Mollusca, Class Cephalopoda, are two very similar organisms. Although nautiloids and ammonoids may appear the same, they are easily distinguished by the suture patterns.
Identify what fossil this is & its kingdom
the fossil is Stromolites, the earliest known fossil and the kingdom is Monera
draw an example of stromatolites. What kingdom are they from?
Kingdom Monera
draw diatoms. what kingdom are they from? bonus; what are they made of? silica
Kingdom Protista
what organisms are these and what kingdom are they from? bonus; what are they made of?
diatoms from kingdom Protista, made of silica
what organisms are these and what kingdom are they from? Bonus; what are they made of?
Radiolarians from kingdom Protista made up of silica
draw radiolarians. What kingdom are they from? bonus; what are they made of?
kingdom Protista, made of silica
Draw Coccolithophores. What kingdom are they from? bonus; what are they made of?
Kingdom Protista, made of calcite
What is this organism? What kingdom is it from? bonus; what is it made of?
Coccolithophores from kingdom Protista, made of calcite
Draw Foraminifera. What kingdom is it from? bonus; what is it made of?
from kingdom Protista, made of calcite
What is this organism? What kingdom is it from? bonus; what is it made of?
Foraminifera, kingdom Protista, made of calcite
What organism is this? what kingdom is it from? bonus; what is it made of?
Fusilinids, kingdom Protista, calcite
What fossil is this? What kingdom is it from? What are some examples of this today?
Cnidaria (Phylum Cnidaria) , kingdom anamalia, corals, sea anemones, jellyfish
draw and example of Cnidaria (Phylum Cnidaria) . What kingdom is it from? What are some examples of it today?
kingdom anamalia, sea anemones, jellyfish, and corals.
draw an example of a brachiopod. label the foramen and the brachial valve. what kingdom is it from?
kingdom anamalia
what fossil is this? what kingdom is it from?
brachiopod, kingdom anamalia
What fossil is this? what kingdom is it from?
Gastropod, kingdom anamalia
what fossil is this? what kingdom is it from?
bivalve, kingdom anamalia
draw a bivalve fossil. what kingdom is it from?
kingdom anamalia
draw a gastropod. what kingdom is it from?
kingdom anamalia
what fossil is this? what kingdom is it from? where did the animal live?
Cephalopods, kingdom anamalia, in the large opening
what fossil is this? what kingdom is it from?
Arthropods (trilobites), kingdom anamalia
draw Arthropods (trilobites). what kingdom are they from?
kingdom anamalia
