Eurypterid and Mastodon Fossils at ISM

I am a big fan of museums which is why I have spent hundreds of hours volunteering at my local one. One of my favorite museums is the Indiana State Museum in Indianapolis, Indiana USA. They have a great number of exhibits showing off fossils found around the state of Indiana. In addition, they are publishing videos of fossils they have in their collection.

This first video is of a Silurian period Eurypterid found in a quarry in Kokomo, Indiana. If the display box is showing a different video, here is the direct link: http://www.youtube.com/watch?feature=player_embedded&list=UUg23t7QR8PYx5N3WX2M2eMg&v=ewev2B5-01I



The next video shows the assembly of the 13,000 year old Fred the mastodon fossil for an exhibit entitled Indiana's Ice Age Giants: The Mystery of Mammoths and Mastodons. It opens in November 2013. If the display box is showing a different video, here is the direct link: http://www.youtube.com/watch?list=UUg23t7QR8PYx5N3WX2M2eMg&v=ulUBrHPIPPM&feature=player_embedded




This video shows the Bothwell dig in 2005 that uncovered seven mastodonts, part of giant beaver, and vertebrate of stag moose. The dig was near Hebron, Indiana. See video at this link: http://www.youtube.com/watch?v=aKJ3CYRvF28
 
This video shows a 2008 fossil dig in an Indiana corn field.

Dawsonoceras Up Close

Dawsonoceras cephalopod found in the Waldron Shale of Clark County, Indiana.  Creature existed in the Middle Silurian Period. It has sinusoidal growth lines which were magnified under the microscope 23 times.

Guam Micro Samples

UPDATE (11/19/2017): The long semi-transparent specimens in the images might be a sponge spicule. I was reading the a book entitled  On Growth and Form (1st edition, 1917) by D'Arcy Wentworth Thompson chapter IX On Concretions, Spicules, and Spicular Skeletons page 413 shows images of Alcyonarian spicules: Siphonogorgia and Anthogorgia. These images look some what similar to the specimens shown in the images on this page. Thanks to Fossils and Other Living Things for this posting and this posting.

This specimens were found at Pago Beach on the island of Guam. Images are magnified 40 times under a microscope which should equate to a 4 mm field of view. The first picture has a gastropod in it. The other specimens might be some sort of foraminifera.

Thanks to Pam for obtaining the specimen and Herb for the processed material.