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Thomas Hegna

@thomashegna.bsky.social

Arthropod paleontologist, father, science educator in western New York. Teaches paleontology, Earth history, stratigraphy, and more at SUNY Fredonia. University of Iowa and Yale G&G alum. WIU refugee.

236 Followers  |  136 Following  |  84 Posts  |  Joined: 22.06.2023  |  2.2467

Latest posts by thomashegna.bsky.social on Bluesky

Geology field trips spur student ‘ah hah!’ reactions | Fredonia.edu “When we go on field trips, students really have an ‘ah hah!’ moment.”

www.fredonia.edu/news/article...

12.11.2025 16:39 — 👍 1    🔁 0    💬 0    📌 0
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Tomorrow!

06.10.2025 18:47 — 👍 9    🔁 2    💬 1    📌 0

MAGNETITE! Well, probably. They are magnetic, and too tiny to see any other features . . .

02.10.2025 17:33 — 👍 0    🔁 0    💬 0    📌 0
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Little known fact about the glacial sediment near Lake Erie in our area. Sometimes, you can see a swath of this sediment in the swash zone of the beach—the waves sort them differently because they are denser than the other sediment. #sunyfredonia #geology #lakeerie #sedimentology #glacialsediment

02.10.2025 17:30 — 👍 2    🔁 1    💬 1    📌 0
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Our Dunk is nearing completion. It now has a stand! #paleontology #geology #Devonian #sunyfredonia #3dprinting

30.09.2025 00:33 — 👍 17    🔁 1    💬 0    📌 0

The water level of lake Erie is at a point where we can reach parts of Point Gratiot that I have never been able to visit. So, I took some students on an impromptu field trip this afternoon to see the Kellwasser event exposed at the Lake Erie Beach. #sunyfredonia #geology #paleontology #devonian

29.09.2025 23:57 — 👍 2    🔁 0    💬 0    📌 0
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More pictures from measuring stratigraphy with Dr. Hegna's class out at the Sheridan Bay Park. Included is some meta-photography with SUNY Fredonia's Roger Coda (marketing and communications). #geology #stratigraphy #fredonia #lakeerie #sunyfredonia

27.09.2025 20:00 — 👍 3    🔁 1    💬 0    📌 0
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Another 3d printed skull to guess. It is harder than it looks.

15.09.2025 22:19 — 👍 4    🔁 1    💬 0    📌 0

I did not know juliid snails had a coelacanth-like history. Do you happen to know the publication history that sorted that out? Does anyone know what their hinge is like?

10.09.2025 19:19 — 👍 0    🔁 0    💬 1    📌 0

Since we have only known each other a finite amount of time, this is high praise! For this, I think I owe you some fossil fish papers . . .

10.09.2025 19:16 — 👍 2    🔁 0    💬 1    📌 0
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Guess who!

10.09.2025 19:14 — 👍 2    🔁 1    💬 0    📌 0
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A beautiful day to measure the Hanover Shale. Found a crinoid-filled lens amongst the layers. #Fredonia #geology #stratigraphy

08.09.2025 23:52 — 👍 6    🔁 1    💬 0    📌 0
Area students check out geology, drone, video editing at campus camp | Fredonia.edu Introductions to drones, movie editing, virtual reality and geology highlighted a Computer and Information Sciences tour taken by area students.

Another way we spent our summer vacation: www.fredonia.edu/news/article...

#fredonia #geology

02.09.2025 18:38 — 👍 1    🔁 1    💬 0    📌 0
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I don't think I am exaggerating when I say this is the fastest brachiopod ever. Introducing the Brachio-Bot. #fredonia #paleontology #3dprinting

01.09.2025 17:58 — 👍 9    🔁 2    💬 0    📌 0
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The Trilo-bot is now fully operational!

26.08.2025 16:48 — 👍 34    🔁 9    💬 2    📌 2
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Guess who? Printed at about 1/2 scale.

21.08.2025 20:16 — 👍 1    🔁 0    💬 0    📌 0

Okay. So Lingula would probably win against any rudist, as long as it managed to kick itself in the right direction with its pedicle.

03.06.2025 15:48 — 👍 1    🔁 0    💬 0    📌 0

So the remote control will be able to control it. Without the wheels, the remote is useless.
It's a little toddler RC car. This brach will not win any races. Just like every other brachiopod that ever was.

03.06.2025 03:00 — 👍 1    🔁 0    💬 1    📌 0
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Coming soon: The Trilo-bot 2.0®

03.06.2025 02:08 — 👍 4    🔁 0    💬 0    📌 0
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I bring you the latest advance in lophotrochozoan technology:
The Brachio-bot®

03.06.2025 02:07 — 👍 8    🔁 1    💬 3    📌 0
Exceptionally preserved ovaries in an ancient horseshoe crab | Geology | GeoScienceWorld

Open access paper: doi.org/10.1130/G533...

30.05.2025 14:44 — 👍 0    🔁 0    💬 0    📌 0
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New paper out describing the first fossil ovaries and unfertilized eggs in a primitive horseshoe crab. #paleontology #xiphosura #ordovician

30.05.2025 14:40 — 👍 8    🔁 3    💬 1    📌 0

SUNY Fredonia alum Jasper Glow helped with the assembly. Ishaan Rangnekar and Fiona Rigby helped with the digital cutting.

23.05.2025 21:20 — 👍 1    🔁 0    💬 0    📌 0

Purchased the model on sketchfab from the Cleveland Museum. Cut it into 90 printer-sized pieces. Voilà.
‪@hmajewski.bsky.social‬

23.05.2025 21:15 — 👍 1    🔁 0    💬 0    📌 0
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So, Tom, how have you been procrastinating the arthropod cuticle preservation paper? Oh, you know . . .
#Devonian #dunkleosteus #3dprinting

23.05.2025 21:12 — 👍 17    🔁 4    💬 3    📌 0
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Proper signage is key in an academic building.

23.05.2025 20:10 — 👍 6    🔁 1    💬 0    📌 1
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Our Debate Over Higher Ed Has Lost the Plot (opinion) We need to reorient the national conversation, Lynn Pasquerella writes.

"A successful college education is measured not by what its graduates believe but by what they can conceive." Important piece by Lynn Pasquerella on @aacu.org's Call for Constructive Engagement statement and higher ed leaders' response to the present crisis.

www.insidehighered.com/opinion/view...

20.05.2025 15:25 — 👍 7    🔁 3    💬 0    📌 0
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a black and white cat is typing on a keyboard with the words " i have no idea what i 'm doing " below it ALT: a black and white cat is typing on a keyboard with the words " i have no idea what i 'm doing " below it
09.05.2025 18:25 — 👍 1    🔁 0    💬 1    📌 0

Oops. Forgot the hashtags. #crustacea #paleontology #devonian #clamshrimp

09.05.2025 18:12 — 👍 2    🔁 0    💬 1    📌 0
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New paper out! Open Access!
doi.org/10.1017/jpa....

09.05.2025 18:09 — 👍 11    🔁 3    💬 1    📌 0

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