Exploring the Oldest Multicellular Organisms: A Virtual Field Trip and Comprehensive Lesson on the Story of Complex Life

CHECK IT

Your ecosystem

Use the "?" icons again to explore what you did correctly or incorrectly.

Click the "Evaluate" button to check your ecosystem.

Microbial mat organisms

Soft-bodied seafloor organisms

Soft-bodied rooted seafloor organisms

Soft-bodied swimming organisms

Shallow water

Sandy seafloor

Now that you have explored what the environment was like during the Ediacaran Period at Nilpena, use what you have learned to answer the questions below.

Select a feature from each of the four choices that existed in that environment.

Water Depth: Shallow water less than 30m - abundant sunlight

Water Type: Tropical marine

Surface: Waves with some storm events

Seafloor: Sandy

Putting it all together. What types of organisms lived in that environment. Choose which of these organisms existed during the Ediacaran Period. (select all that apply)

Microbial mat organisms

Soft-bodied seafloor organisms

Soft-bodied rooted seafloor organisms

Soft-bodied swimming organisms

In a short paragraph summarize a few of the ideas that you have learned in this lesson.

this class is bullshit

According to the video you just watched, Dr. Cohen makes a comment regarding why the fossils of the Ediacaran Period are important. Select which statement she makes regarding the fossils from the choices below. THE ENVIRONMENT The fossils represent the direct link to land mammals today. The fossils represent the first example of large organisms in the fossil record. The fossils represent the first time fossils are seen interacting with each other.

The fossils represent the first example of large organisms in the fossil record.

The first evidence of life on Earth was approximately 23 times earlier than when the Stegosaurus lived. If you use the same logic from above, approximately how far back in time do you think the first evidence of life on Earth would have been?

3.5 billion years ago

Based on the information of the historical events you just examined, Drag the "first life" marker to where it should occur on the timeline.

3.5 billion years ago

dinosaurs

Place the "dinosaurs" marker at approximately 230 to 66 million years ago on the timeline, which is the time span for the Mesozoic Era when dinosaurs thrived. The Tyrannosaurus rex lived around 66 million years ago, towards the end of this era.

ediacaran

Place the "Ediacaran" marker at approximately 635 to 541 million years ago on the timeline. This period is when the Ediacaran biota appeared, preceding the Cambrian Period.

Review it! According to the video you just watched, Dr. Cohen talks about an important type of bacteria called cyanobacteria. Select what process Dr. Cohen states that these cyanobacteria can do. THE ENVIRONMENT Photosynthesis Molecularly bond with one another Randomly divide

Photosynthesis

How are the rocks layered here?

Horizontal like stacked pancakes

Vertical like arranged columns

Which way do these rocks appear to be orientated?

Horizontal like stacked pancakes

Drag each of The six items below to one of the three picture environments above them.

Sandstone: Areas with moderate to high current or wave energy. Shale: Areas away from shore in deep or quiet water areas. Conglomerate: Areas with the highest current or wave energy. Particles too small to be seen with the human eye: Areas away from shore in deep or quiet water areas. Very large rounded particles or clasts: Areas with the highest current or wave energy. Smaller particles that can be seen with the human eye: Areas with moderate to high current or wave energy.

According to the video you just watched on the fossil beds, Dr. Gehling talks about the process of what they do to examine the underside of the fossil beds. Select what process he states was the best solution. THE ENVIRONMENT Leave the beds as they are, then lift and look underneath Trace the top on transparent paper then flip them Simply flip the beds in place because it produces the least amount of damage

Trace the top on transparent paper then flip them

According to the video you just watched on ripple marks, Dr. Gehling states that when ripple marks are very tight and close together, that tends to suggest what type of water? Select from the choices below

Shallow water

According to the video you just watched on how sandstone beds were formed, Dr. Gehling explains the red color of the surface.

Due to the mineral crust of the dead organisms.

According to the video you just watched on how fossilization, Dr. Gehling points to round circlular molds on the seafloor.

A rooted part of a larger organism

According to the video you just watched, Dr. Gehling describes what the mold of the sandstone represents.

Both the evidence of the living material and the ripples on the seafloor.

The Order of Fossil Preservation

Discovery of Fossils

Erosion of sandstone

Time and Pressure hardens sediments

Mineral crust death mask

Decomposition of organisms

Burial of organisms

Tropical Storm event

Original community of organisms

Fossil Identification key

For these questions I don't know what fossils you'll get but I got these:

just go through each option and look at the images only you don't really need to read the text. Just click on the images that look most similar to your fossils

Eoandromeda and Parvancorina.

Sprigging Pambikalbae Parvancorina Anchor shaped Dickinsonia 8 spiral arms Tribrachidium Disk w/3 spiral arms Eoandromeda Leaf like frond Worm like arched head Oval with segments Click and drag to move nodes around.

Spriggina: Worm-like with an arched head.

Parvancorina: Anchor shaped.

Dickinsonia: Oval with segments.

Tribrachidium: Disk w/3 spiral arms

Eoandromeda: 8 spiral arms.

Pambikalbae: Leaf like frond