Upcoming events

    • Sun, May 29, 2022
    • 8:45 AM - 1:00 PM
    • Midlothian, Texas
    • 6

    Ash Grove Cement Quarry Field Trip

    Sunday, May 29 8:45 AM, CDT

    This quarry is just southwest of Dallas near Midlothian. We’ll be collecting the ATCO member of the Austin Chalk just above the Eagle Ford Shale (Upper Cretaceous Period). In this narrow horizon, we’ll be looking principally for shark teeth: Cretodus, Cretoxyrhina, Ptychodus, Squalicorax and other shark and ray teeth. Other possible finds include marine vertebrates such as mosasaur, turtle and bony fish material in addition to the usual assortment of marine invertebrates.

    The good news is that no collectors have been in this quarry in about 3 years. Not so good news is that this cement quarry is very different from Martin Marietta in that as far as we know, they have not maintained their shale pits for years, so there may be very few spots where the shark-tooth producing ‘contact’ is exposed. We know that teeth can probably still be found, BUT we have to go check it out for ourselves.

    The quarry has limited us to 40 people. Society management has been given first priority to sign-up for the trip in reparation for the time they dedicate to the DPS. Then ACTIVE ADULT MEMBERS whose memberships are current will be able to SIGNUP STARTING AT NOON ON MONDAY, MAY 23. Signup is via our website: www.dallaspalo.org.

    Those making the sign-up list will be provided a map to the meeting place (not main plant) and will be asked to download, print and sign a Recreational Use Release form and turn it in on the day of the trip. We will send the form to them when the signup limit is reached.

    We will meet in the parking lot by 8:45AM and collect from 9AM until 1:00.  Closed-toed shoes (ankle-high boots are best) and eye protection are required.  People need to bring their own eye protection, if possible, but the quarry does have a limited supply, if needed. The quarry will also require wear high-visibility, safety vests which will be provided. Most of the collecting is on the surface, but you may need a rock hammer as well as suitable collecting containers. Insect repellent may be useful since some of the areas are overgrown or contain mosquitos. The usual hydration and sun protection is wise.

    People can leave independently before the official end time for any reason.

    Contact Roger Farish with questions: rffarish@verizon.net or 972-898-2700 on trip day.

    Thanks to Sveta Earnest for gaining access to this quarry for our Society.

    • Sun, June 05, 2022
    • 8:00 AM - 2:30 PM
    • Oklahoma
    • 0
    Join waitlist

    Arbuckle Mountains Oklahoma Bromide Formation Field Trip

    The Dallas Paleontological Society is hosting a field trip to the Arbuckle Mountains on June 5, 2022 starting at 8:00 AM to 2:30 PM or sooner if you need to leave before that. 

    If you attended the Black Cat Mountain trip, please refrain from registering for this one to allow other members who could not go on that trip to attend this one.

    This trip will be for Adult Members only to 2 different sites within the Arbuckle Mountains to look for cystoids, brachiopods, trilobites, bryozoa, Cornulites worm tube, which are a type of Tentaculita, receptaculitid algae, cephalopods, gastropods  and other fauna. The geology is Ordovician in age.

    The meeting location and specifics of the trip will be provided to the 10 registrants on Friday evening June 3, 2022. The meeting site is near Ardmore, Oklahoma. These site locations are not to be shared to protect the sites from over hunting. 

    The fossils are not abundant in all layers at the sites so that is why we are limiting it to 10 Adult Members. There are lots of fossils, but I, Kim Pervis have not found whole trilobites at the sites. See pictures below for some of the fauna.

    Registration will begin 5/21/22, Saturday at 8:00 AM and continues until the event is full. Registration will likely fill up very fast.

    One location will require a relatively short, but steep climb and require climbing over large rocks with 2-4 feet drops. Agility and some degree of physical fitness is needed. The other exposure has multiple levels. To move to the next level you must navigate steep areas that have a lot of small loose rocks, which can make it a challenge to not slip and fall on the steep hill.

    Since it is June it will be quite warm. Please take into consideration your ability to tolerate the heat, sun and humidity for hours before you register. One site does not have shade. Please bring plenty of fluids to keep yourself hydrated in the heat.

    If you have any questions please email, Kim Pervis at fieldtrips@dallaspaleo.org 

    Slab with bryozoa, brachiopods and trilobite pieces

    Brachiopod slab

    Cross section of receptaculitid algae with rhomboid pattern on exterior (not shown)

    Homotelus trilobite fragment. It would have been quite large when whole.

    Plate filled with bryozoa, brachiopods and many trilobite parts.

    Close up of the previous plate showing trilobite pygidia and other trilobite parts along with bryozoa and brachiopods.

    • Sat, June 11, 2022
    • 9:00 AM - 2:00 PM
    • Ladonia, Texas


    Saturday, June 11

    There was so much demand for this field trip back in April that the landowners have agreed to let us invite those who didn’t get to go the first trip back onto their property. We are still limited to Adult Members ONLY but we don’t have the group size limitations.

    We do need to stress that we’re collecting very small teeth that normally cannot be found by simple surface collecting. You need to bulk sample the red bed exposures then use a series of screens to stratify the various sizes of teeth. I’ve found that the window screen size captures the most teeth, but I screen down to half millimeter and there are plenty of teeth that size.

    Please reread the formal writeup in the April Fossil Record newsletter for more details. This time, supposedly, Shawn Hamm who’s near completion on a scholarly paper about Moss Creek, will be accompanying us on the trip. He will be able to provide more insight into the paleoenvironment we’re collecting in and for ID of most of the teeth. He will be naming a number of new species from that locality.

    We’ll meet at the Ladonia City Hall at 9AM, then drive 10 minutes out to the site. Please print-off, sign and bring the attached hold harmless agreement with you when you come as this is your only entry pass.

    Digital SIGNUP for the trip will be opened at noon on Monday, June 6 via our website for those wishing to attend.

    Hold Harmless Moss Creek 6/11

    • Sun, June 12, 2022
    • 8:45 AM - 1:00 PM
    • Valley View town square near 103 N Lee St, Valley View, TX 76272

    The Dallas Paleontological Society will be hosting a field trip to Fossil Ridge Ranch in Cooke County, TX on June 12, 2022 from 8:45 AM to 1:00 PM.

    We will be meeting at the Valley View town square near 

    103 N Lee St,

    Valley View, TX 76272

    We will leave from there at 9:00 and driver to the ranch.

    Children are welcome, but we ask that you keep them close to you and don't let them climb on the banks. Be aware that avalanches are possible.

    This site is in the Duck Creek formation. As such the fauna present are predominantly Eopachydiscus marcianus with a few Mortoniceras ammonites and the occasional Idiohamites fragment. There is also the rare shark vertebra or Ichthyosaur bones. There may also be a very rare heteromorph ammonite that has not been fully described. If you find one of these or a fragment of one please consider donating it for study so that it can be described.

    We request that each family or if only a single member that you please only take one large Eopachydiscus ammonite over 14 inches or above so that there will be enough to go around and so that there will be some the next time we visit. Collect whatever else you wish, but limit the large Eopachydiscus to only one.

    If you have attended at least 2 members only field trips in 2022 we ask that you consider letting other members register instead. There have been a number of members who have been on just about every field trip this year. Many other members have attempted to register for field trips, but they have been put on the wait list each time and have not been able to attend a single trip as a result of the limited availability. 

    This field trip is limited to 30 Dallas Paleontological Society Members Only.

    Kim Pervis and Bob Williams will be leading the field trip.

Who we are

The DPS is a group of professional and amateur paleontologists that want to exchange information, interact, and continue their education in paleontology.  We meet once a month on the second Wednesday evening of the month at Brookhaven College, Building H.


If you have a question, if you have a fossil that you cannot identify, or need a site investigation, contact the Fossil Bureau of Investigation for help.

Contact Us at 817-355-4693 

Why join us

We have fun.

We learn stuff.

We go cool places.

We find interesting things.

We make new friends.

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The Dallas Paleontological Society is a 501(c)(3) non-profit organization.

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