The Maryland Geological Society, a non-profit, volunteer organization dedicated to the collection, study, and display of all aspects of the geological sciences, is composed of amateur and professional fossil and mineral collectors. Membership is open to all and visitors are always welcome!

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Latest News

May 16th Meeting Will Feature Talk by Victor Perez on Megalodon

The upcoming meeting of the MGS on May 16th will take place on Zoom beginning at noon. Beginning at 1 p.m., Dr. Victor Perez of the Calvert Marine Museum will speak on the evolution, ecology, and body size of Megalodon. This is the annual joint meeting with the American Fossil Federation, and AFF members will be joining us for the talk. Information on logging in will be sent to members. More information on the speaker and his topic can be downloaded here.

March 21st Meeting

The MGS met on March 21st on Zoom. Among other decisions made during the business portion, it was agreed that all 2021 issues of the MGS newsletter will be available on the website (see notice at right).

The meeting featured an interesting talk by MGS vice president Eric Seifter on estimating the age of mammoth teeth. Eric took us through the morphology of mammoth teeth and how they were structured for breaking up the grasses that formed the animal's diet. He described the development of the teeth in the living animal, including the six sets the animal might have during its lifetime. The method he described for estimating the age centered on the number of exposed and unerupted tooth plates of an individual tooth. The talk was based on his article which appeared in the March issue of the MGS newsletter (available on the Selected Past Issues page).

No Dues For 2021

No dues will be collected for 2021. Dues paid for 2020 will be applied to a future dues payment. Individuals can join MGS in 2021 by filling out a membership application form and sending it to Treasurer Rob King WITHOUT the $15 membership dues. The application form and Rob's address can be found on the Join page.

Next Meeting

May 16, 2021, on Zoom beginning at noon. AFF members will join us at 1 p.m. for a talk on Megalodon by Dr. Victor Perez of the Calvert Marine Museum.

Mineral of the Meeting

The mineral of the May meeting is adamite (basic zinc arsenate). It is typically yellow or greenish yellow.

(Shown above is a specimen of adamite from Durango, Mexico. This image is reproduced with permission of Rob Lavinsky under Creative Commons Attribution-Share Alike 3.0 Unported license, and is available from Wikimedia Commons.)

The May issue of The Rostrum will also feature an article by Bob Farrar about the mineral creedite. He presented this mineral at the March meeting.

2021 Newsletter Issues Online

As part of celebrating the club's 30th anniversary this year, all of this year's issues of the MGS newsletter, The Rostrum, will be posted on the website. Issues from 2021 and those for some previous years are available on the Selected Past Issues page.

Tom Piscitelli's Recent Finds

The MGS Gallery newly features many pictures of the impressive array of fossils that Tom found on his recent trip to North Myrtle Beach, SC. Here's just a little taste.


The MGS Trips page has information on policies regarding trips and details about any upcoming trips. MGS trips are restricted to members. There are no trips currently scheduled.


Want to keep up with some of the latest information on fossils and minerals appearing on the web? Then check out the MGS WebSightings page.

Notable Quote

Paleontologist Bretton Kent at an MGS meeting:

Amateur collectors make paleontology possible.
The Maryland Geological Society is a member of the Eastern Federation of Mineralogical and Lapidary Societies and the American Federation of Mineralogical Societies.

The Maryland Geological Society is NOT affiliated with the Maryland Geological Survey, a state governmental organization.
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