What animals or during the Devonian period?

Devonian Animal (Metazoan) Fossils

• Trilobites (ToL: Trilobites<Arthropoda<Ecdysozoa<Bilateria<Metazoa<Eukaryota)
• Echinoderms (ToL: Echinodermata<Deuterostomia<Bilateria<Metazoa<Eukaryota)
• Mollusks (ToL: Mollusca<Lophotrochozoa<Bilateria<Metazoa<Eukaryota)

1. What group of animals is the Devonian Period best known for?
2. Which group of animals made its first appearance on land during the Devonian?
3. What animals survived the Devonian extinction?
4. What is the organism of Devonian period?
5. What was the atmosphere like during the Devonian period?
6. What animals were alive during the Carboniferous period?
7. What happened during the Carboniferous Period?
8. What animals lived during the Silurian period?
9. What was the first animal to walk on land?
10. What went extinct during the Devonian period?
11. What are some fun facts about the Devonian period?
12. What major events occurred during the Devonian period?
13. What happened during the Silurian period?
14. What fossils were found in the Devonian Period?
15. What characteristics of Tiktaalik are fish like?
16. How much oxygen was in the Devonian Period?
17. What organisms were dominant after the Devonian mass extinction?

What group of animals is the Devonian Period best known for?

The Devonian, part of the Paleozoic era, is otherwise known as the Age of Fishes, as it spawned a remarkable variety of fish. The most formidable of them were the armored placoderms, a group that first appeared during the Silurian with powerful jaws lined with bladelike plates that acted as teeth.

Which group of animals made its first appearance on land during the Devonian?

Early tetrapods, ancestors of land-dwelling vertebrates, first appeared during the Devonian.

What animals survived the Devonian extinction?

The late Devonian extinction affects marine life far more than life on land. Looking closely at the death toll, nearly all the jawless fish, as well as every last placoderm, dies. Unlike these bottom-feeders, many open-water swimmers, like bony fish and sharks, survive the extinction.

What is the organism of Devonian period?

Forests and the coiled shell-bearing marine organisms known as ammonites first appeared early in the Devonian. Late in the period the first four-legged amphibians appeared, indicating the colonization of land by vertebrates.

What was the atmosphere like during the Devonian period?

During most of the Devonian Period, the climate was relatively mild and the continent of Euramerica, which straddled the equator at the time, set the scene for the spread of tropical and equatorial forests.

What animals were alive during the Carboniferous period?

These included the crossopterygians (lobe-finned fishes), dipnoi (lungfishes), and palaeoniscoids (small ray-finned fishes). In the Devonian, the crossopterygians and dipnoi were the dominant forms, but the palaeoniscoids dominated the Carboniferous assemblages. All these groups have living relatives.

What happened during the Carboniferous Period?

Characteristic of the Carboniferous period (from about 360 million to 300 million years ago) were its dense and swampy forests, which gave rise to large deposits of peat. Over the eons the peat transformed into rich coal stores in Western Europe and North America.

What animals lived during the Silurian period?

Mollusks, bryozoans, and especially brachiopods flourished, but trilobites and graptolites were on the decline. Invertebrates remained dominant, vertebrate fossils are rare. Fish with moveable jaws appear, and the first bony fish (osteichthyans) evolved.

What was the first animal to walk on land?

1. Ichthyostega. Ichthyostega devonian dinosaur, dinosaur park. The first creature that most scientists consider to have walked on land is today known as Ichthyostega.

What went extinct during the Devonian period?

Three events are very significant extinction episodes: the Taghanic Event, which formerly was used to draw the boundary between the Middle and Upper Devonian, was a marked period of extinction for goniatites, corals, and brachiopods; the Kellwasser Event saw the extinction of the beloceratid and manticoceratid ...

What are some fun facts about the Devonian period?

During the Devonian the evolution of fish into tetrapods occurred. Various terrestrial arthropods also became established. The first seed-bearing plants spread across dry land, forming huge forests. The supercontinent of Gondwana was to the south, and the continent of Siberia to the north.

What major events occurred during the Devonian period?

During the Devonian Period, which occured in the Paleozoic era, the first fish evolved legs and started to walk on land as tetrapods, and the first arthropods like insects and spiders also started to colonize terrestrial habitats. The first seed-bearing plants spread across dry land, forming huge forests.

What happened during the Silurian period?

During this time, continental landmasses were low and sea levels were rising. This meant rich shallow sea ecosystems with new ecological niches. Silurian fossils show evidence of extensive reef building and the first signs that life beginning to colonize the new estuary, fresh water and terrestrial ecosystems.

What fossils were found in the Devonian Period?

Common Devonian fossils found in Kentucky include sponges (Porifera), corals (Cnidaria), bryozoans, brachiopods, trilobites, snails (gastropods), clams (pelecypods), squid-like animals (cephalopods), crinoids (Echinoderms), and microscopic animals like ostracodes and conodonts.

What characteristics of Tiktaalik are fish like?

Tiktaalik retained both fish and tetrapod characteristics. Its fish characteristics include scales, fins, and gills, and its tetrapod characteristics include a neck, ribs capable of bearing weight, a flat head, dorsally positioned eyes, a fin skeleton, and ear notches (The University of Chicago, 2006).

How much oxygen was in the Devonian Period?

Previous estimates suggested that during the Early and Late Devonian, oxygen levels were somewhat lower than the present 21%, dropping slightly from about 19% to about 17% by the middle of the Frasnian, then rising steadily thoughout the Mississippian to reach about 33% by the end of that period (Fig.

What organisms were dominant after the Devonian mass extinction?

The Devonian extinction ushered in not only the land-bound tetrapods, but also the animals that command the marine vertebrate world to this day: ray-finned (or bony) fish, and cartilaginous fish, like sharks, rays and chimeras.