#conodont

[alex-fictus]

Cambrian Critters!

Anomalocaris - Opabinia - Wiwaxia

Canadaspis - Haikoucaris - Hurdia

Myllokunmingia - Conodont - Haikouichthys

Pikaia gracilens - Hallucigenia - Eldonia

Elrathia kingii - Marella - Paradoxides

Pomatrum - Helicoplacus - Vetuicola

Stickers || Phone Wallpapers Masterlist

Planned or in the works: Cambropachycope, Amplectobelua, Stanleycaris, Balhuticaris, Kylinxia, Chancellorid, Omnidens

[jawless-lads]

[demi-shoggoth]

I teach high school Bio, and I had my students do an assignment about the mass extinctions. One of my students then referred to conodonts as "funny little guys"

Which is fair

Image © @alphynix

[yee-qi]

i'm really perspectivesing rn You can see more art in this series in the #perspectives tag!

"Underdog's Venom" Panderodus/Michelinoceras Silurian, 433 million years ago, Brandon Bridge Formation (United States, Wisconsin) Panderodus was a conodont, best known for their freaky-ass teeth that they left on the ground after the rest of their largely skeleton-less bodies decomposed. A recent body fossil of Panderodus here indicates that unlike most conodonts, this guy was wider and flatter and likely used its big old chompers to hunt large prey. Plus, the creature was quite possibly venomous. Michelinoceras is a fun orthocerid that somehow lasted up to the Triassic, making it one super long-lived genus. This individual has gone up against the venomous conodont, ignored the warnings, and is clearly experiencing...something. That can't be comfortable! Cephalopods tend to have blue blood.

[ppaleoartistgallery]

Parachirognathus Commission

commission for @notsonanosaurus

it depicts two Parachirognathus swimming by a Dicynodon skull subfossil in a Triassic reef for her poster that she and her professor will be presenting in a couple of months.

[dromaeosaurid]

Conodonts! From A Guide to the Fossil Reptiles and Fishes in the Department of Geology and Paleontology in the British Museum (Natural History), 1896.

[taphonomenon]

Trying out some fish, here's a doodle of Panderodus, a tiny Conodont jawless fish from the Silurian. This one's about six to seven times life size.

[ormspryde]

The conodont promissum. I don't know how thrilled I am with this one, but it's done now.

[ID: A pixel art depiction of the conodont promissum, an extinct type of conodont that lived during the upper Ordovician. The animal ismaking an s shape with its body, and is depicted in pink and purple against a darker purple background. /ID]

[craftingcreatures]

As thrilled as I am that they've included a conodont at all, I have to ask. WHY. did they give the jawless fish jaws. You know. The thing jawless fish famously do not have

Clydagnathus - Veiled Sea

Endless Ocean Luminous, Nintendo Switch

how are these things real. where does your brain go

[dick-in-son-ia]

I love learning geology, i know about pettable critters you wouldn't even DREAM of

[alex-fictus]

Early Chordates!

Thanks to these lil buggers, we have to pay taxes and file insurance claims. Amazing

Haikouichthys - Conodont

Pikaia gracilens - Myllokunmingia

Shop || Phone Wallpapers

[jawless-lads]

[raylaismad]

HOLYYY SHITTTTTTTT

My genuine reaction^

achievement unlocked✅

[theofficialpeanutgallery]

GUYS

GUYS

I GOT AN EMAIL FROM TRUMP.

I think it’s like, a mass-sent email for all his “supporters” (yes, I’ve been Diagnosed with Trump Supporter by Trump himself, which is hilarious for a number of reasons), begging poor people to pay for his next campaign, so he can ‘Save America from Joe Biden and the Left.’ That’s President Biden to you, sucker.

Don’t know how to break it to you, buddy, but I kinda am the Left.

Like, my brother’s a full-on raging socialist, we as a family listen to Rise Against and oppose fascism as a general rule.

Wonder how he got my email, google.

Anyway, there’s an option for “donating another amount”. Wonder if I can get away with -12 dollars...

Or I could just reply with as many of his most hated photos as I can cram into email form.

[mineralsrocksandfossiltalks]

Throwback Thursday: Agnathans

Agnatha, meaning "without jaws", is a paraphyletic (descended from a common evolutionary ancestor but does not include all descendant groups) group consisting of jawless fishes. There are 9 clades within the group. The earliest and most basal fishes is the family Myllokunmingiidae. Currently, there are only 3 known genera and they all come from the Maotianshan Shale.

Anaspids were a group alive from the Early Silurian to the Late Devonian. They were small and lacked the armor of the other fishes of the time.

Conodonts are a re group that weren't recognized as fish for a very long time because all that was found were mineralized tooth-structures that had been in their mouths. They lived from the Cambrian until the Jurassic Period and are so common that tey are used as index fossils.

What few soft tissues we have preserved show is had a long, eel-like body.

The sister group to conodonta is Cyclostomi. These are the only living jawless fishes: lampreys and hagfishes.

Pteraspidomorphi is a clade that includes Astraspida and Arandaspida, small fishes with a mobile tail covered in protruding pointed plates and a massive bony head shield. They also possess the lateral line system present in all modern fish (minus hagfish).

Heterostracans are cousins of these two clades but they have only a single exhalent opening on each side into which the gills open.

All three groups share the synapomorphy of aspidin on their dermal armor plates.

Thelodonts (meaning "nipple tooth") are a group primarily known from scales and therefore difficult to place.

Osteostraci (meaning "bony shells") were the first vertebrates with paired fins.

They are the sister group to gnathostomes or jawed fishes.

Several synapomorphies support this including sclerotic ossicles

paired pectoral fins

a dermal skeleton with three layers,

and perichondral bone (dense layer of connective tissue that covers cartilage in developing bones).

Fossilize you later!