Chris Mah

they aren't arachnids and this species lives at hundreds of meters below the surface.. so nothing to worry about.

YouTube video by Global Foundation For Ocean Exploration Gulf of Mexico: The Sea Spider Stroke

A timely encore of this SWIMMING SEA SPIDER for #seaspiderSaturday! #okeanos #pycnogonid youtu.be/7xt-R9UM-j0?...

Photo of a lichen with a white thallus/body. About 2/3 of the lichen body is covered in fairly large, orange apothecia.

Orange Rock Posy Lichen.
NWT, Canada. Lichen is about 3cm long.
#lichen #fungi #fungifriends

Bermuda snail thought to be extinct now thrives after a decade’s effort Special pods at Chester zoo helped conservationists breed and release more than 100,000 greater Bermuda snails

Some good news

Regularly scheduled reminder:

I’m sorry, but I am not able to be interviewed for 30 minutes about my career for your homework assignment.

I may be available to zoom into your class and answer everyone’s questions at once.

New genus of sea snail discovered in the Great African Seaforest Scientists from UCT’s Department of Biological Sciences have been involved in an international research project which shows a parasitic sea snail that represents an entirely new genus.

New parasitic eulimid snails in South African brittle stars! #molluscmonday #echinoday www.news.uct.ac.za/article/-202...

Someone holding a slab of Staithes sandstone (grey colour) slightly larger than a hand with many fossils including oysters, scallops and crinoid ossicle.

A lovely find today with @geologyjohnson.bsky.social at Robin Hoods Bay.

Lots going on here in this Staithes sandstone including: scallop, oyster, and a cute little crinoid ossicle 🤩

#FossilFriday #Paleontology #Geology #Fossil

That looks like Pseudopecten equivalvis.

I was talking about ctenophores last night and it just made me want to lay on a dock watching the animals go by so badly. This is the part of the winter where the length of time indoors starts to feel unbearable.

Roughly 3 by 6 foot bed of crinoid fossils, complete with preserved "flower" heads.

Detail shot.

Bed of crinoid fossils from Kansas, USA. Late Cretaceous. American Museum of Natural History.

Fossil-Quest! Texas "Best" Fossil Finds! Echinoid Phymosoma (Cretaceous), Crinoid Unknown (Cretaceous), Crab Callinectes (Pleistocene) and Gastropod Gegania antiquata (Eocene)

Daisy is holding a beef rock ammonite impression ~5cm across.

We had a great fossil walk today! Our group found beef ammonites and belemnites galore, along with pieces of crinoid, cretaceous sponge and shells, and an ichthyosaur bone. This ammonite was Daisy's favourite fossil!

We still have spaces on our upcoming fossil walks: charmouth.org/chcc/events-...

Brachiopod. Cretacious 100mya.

Brachiopods. Cretacious 100mya.

Brachiopod imprint and trilobite. Cretacious 100mya.

Crinoid stems. Cretaceous 100mya.

Second round. Fort Worth and Mineral Wells, Texas fossil hunting. Trilobites, brachiopods, and crinoids.

#fossils #texasFossils #cretaceous

A museum drawer full of ball-shaped crinoid fossils.

A fossil crinoid belonging to the genus Marsupites

A pencil drawing of the test (skeleton) of the crinoid Uintacrinus.

A pencil drawing of a crinoid skeleton.

Historic specimens of the unusual #Cretaceous crinoids Marsupites and Uintacrinus @nhm-london.bsky.social made by Dr Arthur Rowe in the 1900s, including some beautiful pencil drawings. These extinct 'sea lilies' are abundant at certain levels in the #chalk making them useful for global correlation.

A poster showing 10 different kinds of fossils that can be found in Texas. Each fossil is photographed on a black background, with text next to it naming the fossil type, geologic period or sub-period, and county where it was found. Here are the fossils that are shown: • Bivalves, Eocene, Burleson County • Coral, Pennsylvanian, Jack County • Echinoid, Cretaceous, Bell County • Gastropod, Eocene, Burleson County • Dromaeosaurid tooth, Cretaceous, Brewster County • Mosasaur tooth, Cretaceous, Fannin County, • Ammonite, Cretaceous, Tarrant County • Gastropod, Eocene, Burleson County • Crinoids, Pennsylvanian, Coleman County • Brachiopod, Pennsylvanian, Jack County

For #FossilFriday here’s a poster I made showcasing the variety of fossils that can be found in Texas . I made a similar poster for the Lewisville public library. All are specimen I personally found, photographs my own.

#cretaceous #paleontology #ammonite #crinoid #fossils

pyritized ammonite fossil in limestone rock

#FossilFriday pyritized ammonite from the Punta delle Rocchette Fm. Lower Jurassic.

February's fossil of the month is now on display. Found by one of our wardens during a lunchbreak wander, this slab of limestone was hiding a mass of 200-million-year old crinoid heads and tendrils all entwined and laying over each other!
#FossilFriday
(1/2)

Fossil wood broken in longitudinal view shiwing the elongated conducting cells. They are a bit smaller in diameter than the hair on the right side of the photo.

Reposting this old photo for #FossilFriday: what you are looking at is a fragment of Callixylon wood from the Late Devonian, about 360 million years ago, seen under the microscope. The elongated structures are the conducting cells & there's a hair on the right for scale. 🔬🌿⛏️
#paleobotany

Grayish sandstone bedding plane with many pencil-width sized and long meandering and intersecting fossil burrows, each with a mensicate fill (like little dixie cups stacked in one another).

For #FossilFriday, exquisitely preserved insect burrows (probably beetles) with backfill structure preserved as bas relief on a sandstone surface, from the Early Cretaceous (~130 mya) Botucatu Formation of Brazil. Specimen on display in the Mário Tolentino Museum of Science, São Carlos, Brazil. 🧪🪲🪨⚒️

代々木フォレストビルの床にアンモナイトがいました！イタリア産のペルリーノロザート🇮🇹
#街の中で見つかるすごい石
#UrbanGeology
#金曜日だから化石貼る
#FossilFriday

#FossilFriday at the University of Alabama Museums' Department of Museum Research & Collections‼️ This nice nautiloid, Cimomia haltomi, found in Paleocene rocks from Alabama shows the infilled air chambers. Found and donated by an avocational paleontologist!

#FossilFriday at the University of Alabama Museums' Department of Museum Research & Collections‼️ This nice nautiloid, Cimomia haltomi, found in Paleocene rocks from Alabama shows the infilled air chambers. Found and donated by an avocational paleontologist! 😀 #fossil #paleontology

light grey rock with light brown corals, partly preparated left down a 50 Cent Coin

Reef debris with silicified corals, mostly tecosmilia sp.
Embedded in limestone

Titonian (uppermost jurassic) of the eastern suebian alb near Heidenheim/Brenz

#Fossilfriday

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.

ovoid Aspidella terranovica with central groove next to 3 lobed Triforillonia

Chambered branching protistan fossil Palaeopascichnus left and a bulbous, discoidal Nemiana sp bottom

This #FossilFriday, how about a little look forward in the #Ediacaran to the post Kotlin Crisis extinction event strata in in Newfoundland. doi.org/10.1130/G542...

The post-extinction biotas are dominated by discs such as #Aspidella terranovica and the giant protistan #Palaeopascichnus.

An excited young black woman in out door clothing holding a fossil crinoid stem, and stood in front of a sea cliff.

A gloved hand holding a well preserved crinoid stem fossil.

An excited young black woman in out door clothing holding a fossil crinoid stem, and stood in front of a sea cliff.

A gloved hand holding a well preserved crinoid stem fossil.

Have you ever seen any one as pleased as @saralilplants.bsky.social finding some crinoids? Probably not. #FossilFriday #geology #paleontology #fossils #crinoids #jurassic #RobinHoodsBay

a life reconstruction of the five-eyed marine cambrian arthropod opabinia

a photo of the opabinia holotype, a complete and well-preserved specimen

happy #fossilfriday! bonus: this is opabinia, an arthropod from the famous cambrian burgess shale in canada. equipped with five eyes and a clawed, proboscis-like frontal appendage, opabinia is one of the most intriguing and bizarre animals from the cambrian period
(art by prehistorica_cm)

Fossil angiosperm leaf from Dakota Fm, Kansas. Leaf is about 8cm long.

A 95 million year old angiosperm leaf preserved as an impression in an iron-cemented sandstone. The original leaf may have gone, but you can still see where invertebrates nibbled it.

From Dakota Formation, Kansas. Cenomanian, probably.

#FossilFriday ⚒🌏🔬🌱🍃🌳

Spoonauger Falls (100 ft). Mountain Rest, SC. 25 minute hike. 5/2/25 Chariots River Trail access: 34.9747087, -83.1147379 Falls: 34.9745221, -83.109575

Spoonauger Falls (100 ft). Mountain Rest, SC. 25 minute hike. 5/2/25
Chariots River Trail access:
34.9747087, -83.1147379
Falls:
34.9745221, -83.109575
#SouthCarolina #waterfalls #photography #longexposure #chasingwaterfalls #landscape #outdoors #hiking #explore #nature #travelphotography

This Giant Phantom Jelly Won’t Eat You. Maybe.

STYGIOMEDUSA! nice article from NYT-gift article! www.nytimes.com/2026/02/05/s...

Phaeodarian @schmidtocean.bsky.social dive 898 #livingbioreactors #MarineLife