Dr. Joe Moysiuk
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cambrojoe.bsky.social
Dr. Joe Moysiuk
@cambrojoe.bsky.social
270 followers 200 following 22 posts
Curator of Palaeontology and Geology at the Manitoba Museum and Adjunct Prof. at U of Saskatchewan Geological Sciences, using Cambro-Ordovician #fossils to illuminate early animal evolution (personal account)
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cambrojoe.bsky.social
Dr. Joe Moysiuk @cambrojoe.bsky.social · May 13
Introducing Mosura fentoni, a new radiodont from the #BurgessShale.
Paper here: doi.org/10.1098/rsos.2…
Thi#fossilil species has 3 eyes, spiny claws, wing-shaped swimming flaps, and a unique abdomen-like body region.
Artwork by Danielle Dufault © ROM Artwork by Danielle Dufault © ROM © ROM
Reposted by Dr. Joe Moysiuk
merlegreif.bsky.social
Our work on the histology and mineralization patterns of 3 Devonian chondrichthyan taxa from Morocco is finally out now! I am very happy to share this work and hope there will be more to come about early shark tooth histology!
Thanks to all my co-authors, especially Hector Botella!
rdcu.be/e34zE
Diversity of tooth mineralisation patterns at the base of crown chondrichthyans
Communications Biology - The study of three in situ preserved chondrichthyan tooth files reveals histological and developmental disparity at the stem of crown chondrichthyans and provides insights...
rdcu.be
February 15, 2026 at 9:37 AM
Reposted by Dr. Joe Moysiuk
invertevo.bsky.social
Introducing the soft-bodied fossil Paleocanna tentaculum n. gen. n. sp., a tube-dwelling medusozoan. The first 3 authors are students.👏

www.cambridge.org/core/journal...
Thecate stem medusozoan polyp from the Upper Ordovician of Québec | Journal of Paleontology | Cambridge Core
Thecate stem medusozoan polyp from the Upper Ordovician of Québec
www.cambridge.org
February 16, 2026 at 4:24 PM
Reposted by Dr. Joe Moysiuk
amnh.org
It's Trilobite Tuesday! Some trilobite fossils provide extra insight about life in the Paleozoic seas—like this 430-million-year-old Arctinurus from the Rochester Shale of New York! Its 5-in- (12.7-cm-) long body is covered in brachiopod shells that hitched a ride on the trilobite's carapace.
February 10, 2026 at 4:21 PM
cambrojoe.bsky.social
Great start to the ISELV conference in Berrechid, Morocco. Has been fascinating to learn more about the latest work on early vertebrates. Looking forward to visiting some amazing Paleozoic sites in the coming days!
February 7, 2026 at 8:47 AM
Reposted by Dr. Joe Moysiuk
cambriancam.bsky.social
Welcome back to #fossilfriday!

Here are the impressions of the Inoceramid clam Mytiloides mytiloides. This specimen comes from the Late Cretaceous (Cenomanian-Turonian) Greenhorn Formation (Colorado Group) in northwestern Nebraska.
February 6, 2026 at 2:39 PM
Reposted by Dr. Joe Moysiuk
luiscollantes.bsky.social
🚨New paper🚨

A new article in Swiss Journal of Palaeontology, led by Dr. Lorenzo Lustri (Yunnan University), in which we discuss the affinities of two enigmatic Ordovician arthropods from the Czech Republic by means of elliptical Fourier analysis.

Link: sjp.pensoft.net/article/1791...
February 4, 2026 at 8:15 AM
Reposted by Dr. Joe Moysiuk
sarahlsheffield.bsky.social
New paper with @peterjwagner3.bsky.social, @wrightam.bsky.social, Jen Bauer, and Maggie Limbeck!

www.cambridge.org/core/journal...
Exploring rates of change and modes of evolution in blastozoan echinoderms | Paleobiology | Cambridge Core
Exploring rates of change and modes of evolution in blastozoan echinoderms
www.cambridge.org
February 2, 2026 at 3:17 PM
Reposted by Dr. Joe Moysiuk
fossilyarns.bsky.social
Manitoba Museum does the BEST dioramas, and this is no exception. totally recommend a visit!
manitobamuseum.bsky.social Manitoba Museum @manitobamuseum.bsky.social · 20d
Last year, Dr. Moysiuk and Royal Ontario Museum colleague Dr. Caron announced their discovery of a 506-million-year-old predator, Mosura fentoni.

See fossils and 2D & 3D representations of Mosura fentoni and related species in new exhibit “Weird Wonders from the dawn of complex life”! #FossilFriday
A glass topped museum display case containing a variety of fossil specimens along with specimen models, informative text panels, and photographs.
January 30, 2026 at 9:02 PM
Reposted by Dr. Joe Moysiuk
tom-dudgeon.bsky.social
Putting the finishing touches on the @romtoronto.bsky.social shark workshop! Tomorrow we'll be diving into shark evolution and diversity, from the earliest jawed fish, to Megalodon and the mako. #FossilFriday
January 30, 2026 at 8:53 PM
Reposted by Dr. Joe Moysiuk
draliceclement.bsky.social
ISELV pre-conference field trip has started strong, led by our fantastic host Abdul Lagnaoui! Day 1 & 2 spent in the #Cretaceous and #Jurassic of #Morocco 🇲🇦 🦖 🦕 heading back in time to Permian and Carboniferous next … #palaeontology #ISELV2026
January 31, 2026 at 7:26 PM
Reposted by Dr. Joe Moysiuk
novascotiamuseum.bsky.social
It’s extremely rare to find an entire skeleton of a fossil amphibian. But that’s what this is – except for a few missing pieces of the hands and feet and the very tip of the tail.
entire skeleton of a fossil amphibian
January 30, 2026 at 4:49 PM
Reposted by Dr. Joe Moysiuk
dmcediacaran.bsky.social
Happy #FossilFriday how does a thread about the Inner Meadow biota and unexpected age for the fossils, and a refocusing of Martin Brasier’s #KotlinCrisis sound?
We’ve been trickling out our findings from Inner Meadow including #Charnia brasieri, #Aninoides and there's even cooler stuff in review. 🧵
leaf shaped fossils of Charnia brasieri and Trepassia sp. Mike Simon and Pascal removing the overlying soil (all by hand) the area in front is the size of the site in May 2025
January 30, 2026 at 2:40 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
Last year, Dr. Moysiuk and Royal Ontario Museum colleague Dr. Caron announced their discovery of a 506-million-year-old predator, Mosura fentoni.

See fossils and 2D & 3D representations of Mosura fentoni and related species in new exhibit “Weird Wonders from the dawn of complex life”! #FossilFriday
A glass topped museum display case containing a variety of fossil specimens along with specimen models, informative text panels, and photographs.
January 30, 2026 at 4:00 PM
Reposted by Dr. Joe Moysiuk
aldpaleo.bsky.social
Today's lycopsids ("clubmosses") are small plants and do not produce wood but some of their Paleozoic relatives did! This is a detail of the wood cells in a stem of Sigillaria from the Carboniferous of the USA 🔬🌿⛏️ Happy #FossilFriday!
#paleobotany #botany
Detail of the wood tissue in a fossil stem of Sigillaria seen under the microscope. It shows files of conducting cells and rays.
January 30, 2026 at 4:47 PM
Reposted by Dr. Joe Moysiuk
maxjtelford.bsky.social
www.nature.com/articles/s41...
A Cambrian soft-bodied biota after the first Phanerozoic mass extinction - Nature
The Huayuan biota exhibits extraordinary biodiversity, illuminating the impact of the Phanerozoic mass extinction around 513 million years ago and offering critical insights into the transformation of...
www.nature.com
January 28, 2026 at 4:29 PM
Reposted by Dr. Joe Moysiuk
evolutionsoup.bsky.social
Stunning Fossil Site Reveals Life Rebounding After Extinction Event
@cambrojoe.bsky.social
@egmitchell.bsky.social
#evolutionsoup #evolution #science #fossils
👇🏿👇🏽
is.gd/osu4qw
Stunning Fossil Site Reveals Life Rebounding After Major Extinction Event
January 28, 2026 at 5:53 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
When you think of fossils you probably think of dinosaur bones, mammoth tusks, or corals and shells. You probably don't think of eyes, guts, and nervous systems, but in some rare cases these soft tissues have been fossilized too!

Check out some examples in this video with Dr. Joe Moysiuk.
January 27, 2026 at 4:02 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
It's #MuseumSelfieDay! This year some of our Museum team shared their Museum selfies too. Tell us what your favourite part of your last visit was with a Museum selfie! Tag us on social media @ManitobaMuseum with #MuseumSelfieDay and #MyMBMuseum.
A photo collage featuring sixteen selfies taken by Museum staff members around the Manitoba Museum.
January 21, 2026 at 4:56 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
Plant lovers and outdoor enthusiasts rejoice! Pre-orders for the second run of Dr. Diana Bizecki Robson's new book "Manitoba Flora: A Guide to the Vascular Plants of Manitoba" are open!

Pre-order your copy of "Manitoba Flora" through Museum Shop: https://ow.ly/WBVZ50XYhV7 #MuseumShopSunday
Front cover of Volume 1 of Dr. Diana Bizecki Robson's new publication, "Manitoba Flora: A Guide to the Vascular Plants of Manitoba" with forward written by Shirli Ewanchuk/Black Thunderbird. Book cover is atop a backdrop of an illustrated prairie scene from the Manitoba Museum Prairies Gallery. The Manitoba Museum Shop logo is in the lower left corner.
January 18, 2026 at 4:01 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
Did you know that in rare circumstances even the soft tissue of organisms can be fossilized?

Learn about the weird and wonderful fossils in our newest temporary display through Dr. Moysiuk's latest blog: https://ow.ly/YsNU50XWRRZ
Three images of Mosura fentoni. The first two, from left, show the fossil specimen under different lighting conditions. The left photo shows the outline of the specimen with a rounded abdomen and bulby head and tail. The second image, centre, shows the brain and circulatory system of the fossil. On the right is an artist's rendering of Mosura fentoni in life. An underwater creature with two long front limbs covered in spines, three eyes, and a number of fin-like swimming flaps on its sides.
January 19, 2026 at 4:01 PM
Reposted by Dr. Joe Moysiuk
jkimmig.bsky.social
Happy to see our paper on the earliest Horseshoe Crab - Trace Fossil association published. Thanks to Russell Bicknell for leading the effort and everyone involved for their help.

Elsevier: authors.elsevier.com/sd/article/S...
Researchgate: www.researchgate.net/publication/...
ScienceDirect.com | Science, health and medical journals, full text articles and books.
authors.elsevier.com
January 5, 2026 at 5:49 PM
Reposted by Dr. Joe Moysiuk
cambriancam.bsky.social
Welcome back to #TrilobiteTuesday

Here is a pygidium (tail section) from a large Dalmanitid trilobite. This specimen comes from the Lower Devonian Birdsong Shale in eastern Tennessee.
December 16, 2025 at 6:28 PM
cambrojoe.bsky.social
Pleased to share our latest exhibit, featuring some of the most fantastic looking #fossils from the #BurgessShale. Now on display in the @manitobamuseum.bsky.social lobby, so come on by and take a peek!
December 10, 2025 at 6:12 PM
Reposted by Dr. Joe Moysiuk
fossildetective.bsky.social
One of the earliest large predatory eurypterids, Megalograptus, for #FossilFriday. Megalograptus is known from abundant - and very unusual - material from the Ordovician of #Ohio, affording an important insight into the morphology of this rather bizarre species. ⚒️🧪
A view of the headshield of Megalograptus, preserved as reddish-brown cuticle on a pale grey rock. The headshield is generally equilateral in shape, with a rounded front bearing small spiny projections. A pair of round eyes are also located at the front of the head. The surface of the headshield is curved in dense, pustule-like scales. A fossil of the second appendage of Megalograptus, preserved as dark cuticle on a light grey rock. The appendage is short with robust spines coming off of it. A view of the body segments of Megalograptus, preserved as dark cuticle on pale grey rock. Four body segments are present, again preserving small, pustule-like scales.
December 5, 2025 at 11:07 PM
Reposted by Dr. Joe Moysiuk
manitobamuseum.bsky.social
Manitoba Museum Student Associate and Mitacs Fellow Urgon Snider’s Master’s thesis research is on microfossils. He’ll be working dissolving ancient rocks, extracting tiny fossils, and mounting them for our collections, expanding our understanding of 450-million-year-old ecosystems! #FossilFriday
Urgon with some fossils collected on Lake Winnipeg this summer, where further fieldwork will be continued this fall. The moon-like landscape of the Alberta badlands, taken during fieldwork this summer in Dinosaur Provincial Park, Alberta. An exciting discovery! Urgon found and collected this large specimen while doing fieldwork in southern Alberta this summer.
October 24, 2025 at 3:16 PM