Opabinia has five eyes, a frontal “nozzle,” or proboscis, a body with serially repeated lateral lobes and gills, and a prominent tail fan. The whole body length ranges between 4.3 and 7.0 cm (excluding proboscis).
Q. Why did Opabinia go extinct?
Opabinia evolved alongside arthropods, chordates, and echinoderms in the Cambrian — but unlike these groups, Opabinia’s lineage went extinct by the end of the Cambrian. Because it shares some traits with arthropods, researchers hypothesize that Opabinia might be closely related to the ancestral arthropod.
Table of Contents
- Q. Why did Opabinia go extinct?
- Q. Was Opabinia a predator?
- Q. What environment did Opabinia live in?
- Q. What started the Cambrian period?
- Q. What caused the Cambrian period to end?
- Q. What happened Cambrian explosion?
- Q. Did the Cambrian explosion kill the dinosaurs?
- Q. What was the first form of life?
- Q. Why is the Cambrian explosion called an explosion?
- Q. What animals lived during the Cambrian period?
- Q. What did the Earth look like in the Cambrian period?
- Q. What was Earth like 540 million years ago?
Q. Was Opabinia a predator?
Opabinia was likely a carnivore and used the claws on its proboscis to grasp soft food items and carry them towards its mouth, which was located under the base of the proboscis.
Q. What environment did Opabinia live in?
sea bottom
Q. What started the Cambrian period?
541 (+/- 1) million years ago
Q. What caused the Cambrian period to end?
Just as the first complex animals were settling into Earth’s oceans, oxygen levels fell dramatically and wiped many of them out.
Q. What happened Cambrian explosion?
The Cambrian explosion or Cambrian radiation was an event approximately 541 million years ago in the Cambrian period when practically all major animal phyla started appearing in the fossil record. It lasted for about 13 – 25 million years and resulted in the divergence of most modern metazoan phyla.
Q. Did the Cambrian explosion kill the dinosaurs?
the dinosaurs were killed. The mass extinction that occurred on earth 65 million years ago was immediat… The mass extinction at the end of the Ordovician period was probably caused … Findings from layers dating to the Cambrian geological period show an appear…
Q. What was the first form of life?
Prokaryotes
Q. Why is the Cambrian explosion called an explosion?
The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the “Cambrian Explosion,” because of the relatively short time over which this diversity of forms appears.
Q. What animals lived during the Cambrian period?
During the Cambrian there were more than 100 types of trilobites. There were plenty of other species living during the Cambrian Period also. Mollusks, worms, sponges and echinoderms filled the Cambrian seas. There were other living things present then that don’t fit into any of the categories we know about today.
Q. What did the Earth look like in the Cambrian period?
In the early Cambrian, Earth was generally cold but was gradually warming as the glaciers of the late Proterozoic Eon receded. The middle of the Cambrian Period began with an extinction event. Many of the reef-building organisms died out, as well as the most primitive trilobites.
Q. What was Earth like 540 million years ago?
Approximately 540 million years ago, at the beginning of the Cambrian Period, the fossil record at locations across Earth is marked by the dramatic appearance of complex, diverse, multicellular organisms with hard parts.
