# alien alienart conceptart bookillustration speculativebiology speculativeevolution creaturedesign specevo scifibooks aliencreature thylacocephalans protozoea mayrocaris paleoart paleontology mesozoic fossilinvertebrate leech parasite westernghats trekking hiking sustainability biology invertebrates cartoons greenhumour lifelessons comics scicomm illustration cretaceous fossilamber invertebrate chimerarachne arachnid spider spiders

サカバンバスピスもかわいいけど、同じ無顎類ならば、化石本体（2枚目）の可愛さも込みでポリブランキアスピスを推したい。ちなみに開いているのは口ではなく呼吸孔で、採食時に使ういわゆる「口」は腹側部にあるそうです。
（画像はどちらもPhilippe Janvier の「Early Vertebrates」より）

239 531
2023-06-15

正面から見た化石の図はこんな感じ。こちらもJanvier博士の「Early Vertebrates」より。

96 232
2023-06-15

Philippe Janvierの「Early Vertebrate」に掲載されている復元図はこれ。”より正確な復元図”のように出回っている「頭の部分の甲冑が剥き出しになっているイラスト」より、例の模型に近いように思います。

199 398
2023-06-15

March 31, 1850, birthday of Charles Doolittle Walcott, American invertebrate paleontologist famous for the discovery in 1909 of well-preserved Cambrian fossils in the Burgess Shale of British Columbia, Canada
https://t.co/fZo3s0LZU6

49 203
2023-03-31

Morning folks! And we have a guest thread this morning from , who asks:

What UK habitat contains at least 15% of our nationally rare and scarce invertebrates?

🧵

4 23
2023-03-28

makes u look at my mlp oc
her name's brittlestone, and she specializes in the invertebrate paleontology of Equestria!
Sure, finding the ancestors for ponies and dragons is cool, but she gets just as excited finding a new boneless sea creature!

2 11
2023-03-21

66,177 SPECIES REMOVED

1 VERTEBRATE REMAINS

THE ENTOMON NOW REIGNS

22 102
2023-03-14

Bivalves were the first and among the only animals on Praya. The group that would dominate the land stems from a group of bivalves adapted for a more mobile/worm like lifestyle. With no invertebrates other than them, or vertebrates they were free to radiate for 90million years https://t.co/dBgYmXIsT9

6 47
2023-03-09

I love invertebrates and all types of creatures

0 1
2023-03-02

Not many vertebrates are known from the Late Triassic Norian stage in Western North America: Shastasaurus (or Shonisaurus) sikkaniensis from the Pardonet formation of British Columbia was the largest marine reptile ever found. Gunakadeit was an odd thalattosaur from Alaska.

22 98
2023-02-27

Helerrets are the most common salmonids that can be found in the rivers, lakes and wetlands of the continent. These medium sized predators mainly feed on the abundance of mollusks and other hard shelled invertebrates, as well as smaller vertebrates occasionally.

(+)

59 395
2023-02-22

I guess this isn’t really a bad take, but I was thinking about it earlier. I miss when Fossil Pokemon were based off ancient lesser known animals (like marine invertebrates) instead of dinosaurs. Plenty of regular Pokemon look like dinosaurs, so it feels redundant. https://t.co/DfJJFOPLYQ

10 116
2023-02-18

Invertebrate valentines 🎡💝

4 9
2023-02-15

thank you for the chance!!!

my fun fact about myself is uh um. uhm. I have invertebrate pets! :D

0 0
2023-01-18

Hi this video features works from
please give him a follow he's dedicated so much of his time to expanding the amount of accurate illustrations we have of less known prehistoric invertebrates. it would be great if his featured art can also be credited in the video desc

4 32
2023-01-17

Hello! 🦐 I research and illustrate crustaceans and other marine invertebrates! I enjoy sharing the things I learn with all of you! 💕

14 48
2023-01-15