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Now on the feeding structures. Skaravids posses a highly derived radula. Stem-Skaravs had to independently evolve a form of radula since bivalves lack them, these were originally filaments used to aid in sifting through the ocean floor for food

3 10
2023-03-09

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

Here be shipworms!
These wood-eating bivalves have evolved to look like a ~ WORM ~ i.e. the most commonly evolved body shape among animals.

https://t.co/P8QIehh2pX

10 88
2022-12-28

coquina clam fursona. body is a giant modified foot and the "hair" are the bivalves

4 26
2022-12-24

218. Clam

These simple bivalves mind their own business in Jolly Roger Bay, opening up to reveal their prize and closing again. But wait, this clam looks more like… Clampy from Mario Galaxy?! You sneaky shell, you thought you could switch places and get an early Tweet!

🦋

6 16
2021-10-02

If bivalves evolved to live on land, what niches would they occupy? here are a few of me and my girlfriend's ideas

1 10
2021-06-08

For - some of shipworms!

There worm-shaped creatures are actually heavily-derived bivalves that have evolved to feed on wood. They are also known as "termites of the sea".

https://t.co/P8QIegYTbP

22 75
2020-08-24

その唇は二枚貝の如く
Its lips are like bivalves

34 117
2020-07-15

As soneone who works in it’s pretty exciting when you get to your hotel room and see they have bivalves as wallpaper

3 19
2020-02-24

Quick, we’re on a roll!

What’s a crustacean’s favorite kind of pugilism?

Bar-knuckle brawling 🤜🤜

( learned today that barnacles are crustaceans, not bivalves, which seems obvious in retrospect)

[GIF “The More You Know”]

1 10
2020-02-08

There are discoveries to be made in the stones of 108 steps. Carboniferous trace fossils, probably left by burrowing bivalves.

1 6
2019-10-02

On today’s to-do list:
1) search these filters for (there are nearly 80 filters here - hoping to get them all done in the next 3 / 4 days)
2) identify these from stomach samples.

0 5
2019-06-03

My Steven Universe oc, Green Opal!
She works taking care of large bivalves like oysters that grow pearls. She was on Earth setting up an oyster bed prior to the evacuation of the planet.

0 1
2019-05-18

Fossil corals and bivalves in the Cretaceous tsunami deposit in NE Japan. They were washed by huge 2011 tsunami again after 110 million years...

29 90
2019-03-31

Rudists: the rudest bivalves.

6 12
2019-01-03

1861 Shells Bivalves Marine Antique Engraving Hand colored Original Antique Print Drawing Wall Art home decor Lithograph 150YEARS OLD https://t.co/y0IPYdcxm9

0 0
2018-12-21

1861 Shells Bivalves Marine Antique Engraving Hand colored Original Antique Print Drawing Wall Art home decor Lithograph 150YEARS OLD https://t.co/y0IPYdcxm9

1 1
2018-12-14

1861 Shells Bivalves Marine Antique Engraving Hand colored Original Antique Print Drawing Wall Art home decor Lithograph 150YEARS OLD https://t.co/y0IPYdcxm9

1 0
2018-09-17