FLORIDA MUSEUM OF NATURAL HISTORY

DIVISION OF VERTEBRATE PALEONTOLOGY

WINTER 2008 – THE TAPIR CHALLENGE CONTINUES

VOLUNTEER FOSSIL-DIGGERS WANTED!

Collecting a juvenile tapir skeleton on April 22, 2006

Collecting a juvenile tapir skeleton on April 22, 2006; photo by R. Hulbert

The Division of Vertebrate Paleontology of the Florida Museum of Natural History will conduct a major fossil excavation in January, February, March and April 2008 in north-central Florida. The site we will work was discovered in 2005 in a limestone quarry northeast of the town of Newberry in western Alachua County. About 150 volunteers worked at this site, called Haile 7G, in the fall of 2005, about 100 volunteers worked in the spring of 2006, almost 200 in the fall of 2006, about 110 in the spring of 2007, and 105 in the fall of 2007. Altogether these volunteers have collected many thousands of fossils at Haile 7G and made significant discoveries. It is anticipated that 2008 will be our last year working this fabulous fossil site.

Haile 7G produces fossil bones and teeth of about 50 different kinds of freshwater and land animals. Some are preserved as intact (or nearly so) skeletons, others are isolated bones or teeth without an association with other specimens. Common mammals at the site are a tapir, two types of ground sloth, one small and one very large, and a large armadillo-like animal (click here for a list of the entire fauna). The fossils are estimated to be about 2 million years old, from what geologists call the Pliocene Epoch. This is an especially interesting time in Florida’s prehistory, as new arrivals from South America, such as sloths, armadillos, porcupines, and capybaras, were adapting to live among resident species of horse, tapir, llama, peccary, mastodon, and others. Another reason the Haile 7G fossils are scientifically significant is that they represent the entire life span of the common species, from those that died at a very young age, soon after birth, all the way to fully mature adults.

WHEN

The Winter 2008 season will start on January 12 (weather permitting), and continue through April 6. Field work will normally begin at 9 AM and end at 4:30 PM, although we might start later on days with cold overnight temperatures.

Because private vehicles are not allowed in the quarry, volunteers will be instructed to park in a designated location, and we will transport you to the fossil site and then back to your car.

You can begin work at any of these times: 9:00 AM, 12:00 PM (noon), or 1:30 PM. Shifts will end at 12:00 PM, 1:30 PM, and 4:30 PM and you can start and leave at whichever times best fit your schedule. You can volunteer for as many days as you wish.

WHERE

The fossil site is located about 2 miles northeast of Newberry, a short distance off Newberry Road. It is approximately a 30 to 45 minute drive from Gainesville, depending on traffic. Detailed directions to the parking location will be provided to all volunteers after we receive their application form.

WHAT

Volunteers will be digging along side Florida Museum of Natural History staff and UF graduate students. Normally small hand tools are used, such as screwdrivers and trowels, to carefully dig through the clay and to expose the fossil bones. If intact and sturdy, the bones will be removed and placed into plastic bags. If fragile, you will dig around the specimen and then make a plaster jacket (see pictures below) around the specimen, which will hold it together as we transport it back to museum laboratory. No previous experience is necessary; we will train you on your first day if you have not worked on one of our past fossil digs.

Finding a new tapir mandible

Museum curator Jonathan Bloch (right) and volunteer Dean Warner (left) excavate a tapir mandible
and skull, Saturday April 30, 2006; photo by R. Hulbert

Volunteers with plaster jacket containing tapir mandible

Volunteers Brenda Farlow and Linda Geary with the plaster jacket containing the tapir mandibles
and skull from above, Saturday April 30, 2006; photo by R. Hulbert

WHAT IS THE TAPIR CHALLENGE?

Tapirs are hoofed, plant-eating mammals distantly related to horses and rhinos. They have bodies somewhat proportioned like pigs, and their nose has been modified into a small trunk. Today tapirs live in southern Central America, South America, and southeastern Asia. Modern tapirs are classified into four species, and all of them are placed in a single genus, Tapirus. In the past, Tapirus had a wider distribution, inhabiting China, Europe, and much of North America. More information about tapirs can be found here.

The first fossil skull of Tapirus found in North America was recovered near Vero Beach, Florida in 1917. In the almost 90 years since then, many hundreds, if not thousands, of fossils of Tapirus have been found in Florida, including several more skulls and many upper and lower jaws. The fossil record shows that Tapirus lived in Florida almost continuously for about 9 million years, until it became extinct here and the rest of the United States about 11,000 years ago. More fossils of Tapirus have been found in Florida than any other region of the world.

A fossil site in eastern Tennessee that was found in 2000 during highway construction has challenged one of Florida’s claims of fossil tapir superiority, having the fossil site that has produced the largest number of individuals of Tapirus. Florida’s Love Bone Bed site, located near the town of Archer, previously held that record, with a minimum of 24 individuals. The Gray Fossil Site in Tennessee has produced about 70 individuals, and collecting there continues, so that number will only increase.

By the end of 2006, the number of individuals of Tapirus collected at Haile 7G was about 46; of those 14 were found during the Fall 2005 Tapir Challenge, 11 during the Spring 2006 Tapir Challenge, and 10 during the Fall 2006 Tapir Challenge. In the spring and fall of 2007, we collected 30 more tapirs, for a grand total of 76. We now have a few more individuals than have been found at Tennessee’s Gray Site. However, work at the Tennessee site will continue for many years, while this is our last. So we need to build up as big a lead as possible.

REQUIREMENTS

Minimum age for regular volunteers is 18 (this age limit was set by the mine management, and we can not make any exceptions). Volunteers need to be of at least moderate physical fitness and be able to work outdoors for extended periods, often when temperatures are high. For insurance purposes, volunteers must sign a liability waiver and become official museum volunteers. All fossil specimens collected during the excavations become the property of the Florida Museum of Natural History.

HOW TO APPLY

If you have not worked with us on a previous Tapir Challenge dig, we will begin accepting applications from new volunteers on January 7, 2008. Go to this web page for an application form (pdf file). Print and fill out the form, and then send it in following the instructions.

Those who worked with us on previous Tapir Challenge digs (Fall 2005, Spring or Fall 2006, or Spring or Fall 2007) do not have to fill out a new application form. Starting January 4, 2008 you can simply email Richard Hulbert (rhulbert@flmnh.ufl.edu). No reservations for volunteers will be accepted before the dates specified above.

Because it is not possible to predict far in advance when rain-producing cold fronts will pass throught the area, we will decide only two or three days in advance whether or not we will work on a particular day. Volunteers for this session will fall into two categories. Regular volunteers will sign up to regularly work one or more days per week, for example Saturdays. On Thursday we will email or phone Saturday volunteers and let them know whether or not we will be working the Saturday of that week. They will email us back to let us know if they can work that week. The other group of volunteers, that for lack of a better term will be called "irregular" volunteers will email Richard Hulbert (rhulbert@flmnh.ufl.edu) one to three days in advance of a day they want to work. He will respond to let them know if we will be working that particular day.

DONATIONS

This fossil dig is funded primarily by the National Science Foundation, by a SGER grant to J. Bloch and R. Hulbert. The NSF funds pay for the salaries of the student assistants, rental of the excavator, and major field supplies. However, donations from volunteers and others are needed for additional supplies to collect the fossils and to curate them at the museum. The budget we receive from the state is insufficient to pay for this. Donations in any amount can be included with your application, or mailed separately to Richard Hulbert, Dickinson Hall, University of Florida, Gainesville FL 32611-7800. Make checks out to "University of Florida Foundation". Donations are tax deductable.

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