Ordovician Period A A

Here you will find in the fossil cases and in the diorama an excellent representation of all life forms that existed during the Ordovician Period.

Nautiloids were the dominant predators at this time. The Ordovician is best known for its marine
invertebrates, including trilobites and brachiopods. A typical marine community consisted of these animals, plus red and green algae, primitive fish, cephalopods, corals, crinoids, and gastropods. This is also the time when Coral began to grow in the ocean. The super continent, Gondwana slowly shifted to the South Pole and the land mass was covered in a glacier that dropped the sea level. These events caused many species of life forms to become extinct.

In case A we have fossilized chrinoids. Chrinoids are a species of echinoderms. They have radial symmetry and are sometimes known as sea lilies.

In case B fossilized Carpoids can be found. Carpoids are related to the Echinoderms but are unique because they do not have radial symmetry but are asymmetrical.

The Starfish in Case C first appeared in the Ordovician and looked very similar to the ones we have
today. Starfish have survived many extinction events and their appearance has changed very little throughout time. Coral first appeared at this time and since then have flourished in the ocean.

In case D we have fossils of Coral that date to the Ordovician period and are similar to the most primitive Coral that we have in today’s oceans.

Did you like this post? You might be interested in...

Cambrian Period...

The Naranjo Museum has on display one of the most ...

More On Current Exhibits »

Carboniferious ...

Here you will find in the fossil cases and in the ...

More On Current Exhibits »

Also at the museum:

Apollo 14 Learning Resources

Apollo 14 Moon Rock at the Naranjo Museum The Apollo 14 Moon Rock or Lunar Sample here at the Naranjo Museum was collected during the Mission to the Moon. Here are some resources to help children lea ...

More On Blog »

Artifact Identification Weekend

The Naranjo Museum of Natural History here in Lufkin, TX will be hosting an Artifact Identification Weekend on Saturday and Sunday, February 17th & 18th. Saturday will be 10am-5pm and Sunday 1pm-5 ...

More On Blog »

Naranjo Museum spotlighted in The Lufkin News

More On Blog »

Search the Museum


Naranjo Museum of Natural History

Tickets Price
Age 3 & under Free
Age 4 to 18 $5.00
Adults $8.00

Hours of Operation
Mon. - Sat.: 10 AM to 6 PM
Sunday: 1 PM to 6 PM

For more information, call
(936) 639-3466