# trilobitetuesday sundayfishsketch fish sciart paleoart cephalopod scubadiving timetravel scifiart deepsea deepseacreatures aiphotography fossils iowa animalartistsunite paleontology earthhistory

Actually if you erase the tiny face off of the glabella, you have a pretty cute line drawing of a trilobite. Probably a calymenid from the Silurian or the late Ordovician.

Still, the tiny face amuses me sufficiently to share as is.

https://t.co/9ezT3KwVUl

6 23
2023-03-28

A shallow, mostly sandy tank dedicated to Ordovician fauna, with walls high enough so guests can't touch them. the backdrop scenery would look like a tidal rock pool view

It would feature a few schools of colorful jawless fishes, and a pair of heteromorph ammonites.

0 1
2023-03-24

Ordovician Alice SPRINGS (today’s Australia) with some ancient “near-fish”: Sacabambaspis, Arandaspis and a couple of conodonts.

15 62
2023-03-13

Created this for my partners Historical Geology class, which had a project of what it would be like if you could time travel back to the Ordovician period and scuba dive.

1 3
2023-02-23

February 19, 1792, birthday of Roderick Impey Murchison, geologized in old Scotland. Based on his observations of fossils he proposed a new geologic period between the Ordovician & Devonian naming it Silurian after an ancient tribe in Wales
https://t.co/pQ9QwJuw7s

13 56
2023-02-19

A new Opabinia relative has been discovered but this time in the Ordovician! Mieridduryn was found in Wales with soft tissues preserved. Its name means "bramble-snout."

https://t.co/dBEFICbDy4

73 247
2022-11-17

Today's Paleozoic Creature is the Orthoceras! Orthoceras is a Mid Ordovician cephalopod, which lived from 470-460 Mya!

25 176
2022-10-14

A little paleoart of Lunataspis borealis, a newly ordovician species of horseshoe crab described by et al., I'm really glad to see more knowledge on ordovician xiphosurans being published ! https://t.co/jqOWj8OSd9

7 27
2022-10-05

Cladoselache is great and all, but thylacocephalans are seriously wild. An extinct class of predatory arthropods w/ enormous eyes, known from Ordovician to Cretaceous. Here's amazing material of the Jurassic Dollocaris, w/ reconstruction by Andrey Atuchin https://t.co/6IULVFlvYg

3 30
2021-12-25

Dicranopeltis

A rare trilobite, its recognized by the leaf-like segments of the pygidium (tail), and the sideways growing spikes on its head

ALT: The genus actually survived two geologic periods, its found in both silurian and ordovician formations of two different continents

4 28
2021-12-11

Answer, it's series of theca on stipes of graptolites! Coming from famed Dobb's Lin location in Borders of Scotland (aka Ordovician-Silurian boundary)

2 40
2021-10-08

How It Started (Aphetoceras, 2018) vs. How It's Going (Plectoceras, 2021)
Both nautiloid cephalopods from the Ordovician. The nearly matching color schemes was unintentional

10 84
2021-09-22

Gabriceraurus mifflinensis, an extraordinarily beautiful trilobite from the of

art from



13 33
2021-08-25

The Ordovician trilobite Gabriceraurus mifflinensis

42 246
2021-08-19

The Oldest sea scorpion is Pentecopterus from the Ordovician Winneshiek Shale in Iowa. Despite this acclaimed status, they were relatively derived meaning it's possible we can find earlier eurypterids in the Cambrian.
https://t.co/bM9WneURAm

10 49
2021-08-08

Also there's this, idk exactly what it is but it was found in stone transported to the area from the Arbuckles, so prob Ordovician?

0 2
2021-07-16

Here's a terrifying giant nautiloid about to attack a woodlouse disguised as a trilobite. Just another day in the Ordovician seas.

4 45
2021-06-17

The Silurian saw plants and animals emerge on land. Marine biodiversity recovered after the end Ordovician mass extinction. Huge coral reefs developed and fish evolved jaws. Very high CO2. Supercontinent Gondwana dominated the SH. No Ordovician on my chart! 🌎🐟

28 97
2021-05-24

Another of my WWD entry is for the giant Ordovician Cone, the Orthocone, is amazing that this depiction still holds up well compared to other docs as this has the most accurate features speculated including 10 arms, adhesive ridges and simple eyes. Is not perfect but still good.

27 137
2021-03-16

favorite Ordovician sea creatures living around the warm seas 480 to 440 million years ago

the 40cm long conodont Promissum
the weird looking fish Sacabambaspis
the giant Cameroceras
the sea scorpion Megalograptus

say hi to them 🤠

0 2
2021-03-07