#Living Fossil

[nuanimistdatabase]

Meet The World’s Oldest Fish—Presumed Extinct For 60 Million Years, Then Rediscovered In A Small Fishing Town

Meet the Indonesian coelacanth, a second species!

[theinsomniacindian]

Coelacanths are so cool, I wish they were rea- wait a minute

[sombertide-0]

can you draw coelacanth please?

of course!

[catnoli]

living fossil quilt

this is my postcard design featuring the frilled shark for october! join here before september 30th to get this as a postcard + sticker in october ^_^

[respect-the-locals]

🐠 Daily Fish Fact: 🐠

Coelacanths were once known only from fossils and were thought to have gone extinct approximately 65 million years ago. Much to scientists' surprise, the first living coelacanth was discovered in 1938. Numerous characteristics are unique to this fish. Among them is the presence of a "rostral organ" in the snout that is part of the electrosensory system, and an intracranial joint or "hinge" in the skull that allows the anterior portion of the cranium to swing upwards, greatly enlarging the gape of the mouth.

[mindblowingscience]

What do the ginkgo (a tree), the nautilus (a mollusk) and the coelacanth (a fish) all have in common? They don't look alike, and they aren't biologically related, but part of their evolutionary history bears a striking resemblance: these organisms are referred to as "living fossils". In other words, they appear to have escaped the transformations that normally come about over time, through evolution.

Continue Reading.

[sodatab-png]

Hey, it’ll be alright. Don’t cry. Coelacanth, okay?

[ognimdo2002]

Alligator Gar (Atractosteus spatula) – Crocodilian Fish

The alligator gar is a euryhaline ray-finned fish in the clade Ginglymodi of the infraclass Holostei, being most closely related to the bowfins. It is the largest species in the gar family, and is among the largest freshwater fish in North America.

Leucistic

Melanistic

Saging saging 🍌, mangga mangga 🥭, papaya papaya 🍐

[llatimeria]

🐟 IT'S COELACANTH DAY! 🐟

On December 23rd, 1938, an unusual fish was caught off the coast of South Africa near the mouth of the Chalumna river by Captain Henrik Goosen. Recognizing its potential significance, he showed it to his friend and local museum curator, Marjorie-Courtenay Latimer, who reluctantly had it taxidermied to preserve it long enough for her colleague J. L. B. Smith to identify, as he was unfortunately unavailable while the specimen was fresh and easier to study.

Nonetheless, Smith identified the animal as a modern-day descendant of coelacanths, a fish up to then only known through fossils over 66 million years old and presumed long extinct. Smith gave the animal the scientific name Latimeria chalumnae, in honor of his colleague's contribution to the historic discovery as well as the river they were found somewhat close to, I guess.

Thanks to the combined efforts of these amateur and professional naturalists, people all around the world can admire and protect these wonderful, bizarre, and unique animals. Now we can celebrate the re-birthday of the coelacanth every year on December 23rd!.

🐟Happy Coelacanth Day Everyone!🐟

[yugiohcardsdaily]

Living Fossil

"Activate this card by targeting 1 Level 4 or lower monster in your GY; Special Summon it and equip it with this card, but banish it when it leaves the field (even if this card leaves the field). When this card leaves the field, banish the equipped monster. The equipped monster loses 1000 ATK/DEF, also its effects are negated. You can only activate 1 'Living Fossil' per turn."

[homoqueerjewhobbit]

TIL that sassafras is a living fossil dating back to the late Cretaceous period. This means dinosaurs could have drunk rootbeer.

[alphynix]

Strange Symmetries #20: The 16 Million Year Fiddler Crab Rave

Many decapod crustaceans have slightly asymmetrical pincers, often with one claw being chunkier and specialized for "crushing" while the other is more slender and used for "cutting".

But fiddler crabs take this sort of asymmetry to the extreme as part of their sexual dimorphism – males have one massively oversized claw, which is used for both visual display to potential mates and for physical fights against rivals.

Some of the earliest fiddler crabs are known from the Miocene of what is now northern Brazil. Although the fossils have been given several different taxonomic names since their discovery in the 1970s (including Uca maracoani antiqua, Uca antiqua, and Uca inaciobritoi) they're currently considered to be indistinguishable from the modern Brazilian fiddler crab, Uca maracoani, meaning that these crabs have remained externally unchanged for the last 16 million years.

Up to about 4cm in carapace width (~1.6"), modern Uca maracoani are found in coastal mangrove swamps and tidal mudflats around the northern and eastern coasts of South America – and some of these environments have also undergone little change since the Miocene. Males of the species can develop their enlarged pincer on either side of their bodies, with lefties and righties seeming to occur in equal numbers.

———

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[swamp-boggler]

Tree-clubmoss (Genus Dendrolycopodium).

9/3/24/ Triangle Bog, OH.

A very interesting find. Some sections of Triangle Bog are covered in these ancient plants called tree-clubmosses, looking like a miniature forest.

In many states, clubmosses are on the endangered species list.

[sombertide-0]

i had coelacanth on the brain

[chunkfunkgunk-offishal]

How would you rate the coelacanth?

Today on CHUNK! FUNK! GUNK! We rate

the COELACANTH:

5/10 Chunk

6/10 Funk

0-1/10 Gunk

The Coelacanth! I love these funny old men. They don’t LOOK like the most interesting fish, but their history is what makes them so cool! Old man. OOOLLDD MAAAN!!! A good chunk to them. More toward the middle of the funk-spectrum since it looks pretty normal until you know more about it. I couldn’t find much information on their slime/mucous secretion.

[respect-the-locals]

🐙Daily Cephalopod Fact:🐙

Chambered Nautilus: The nautilus is an octopus’ cousin. It has more than 90 tentacles — the most of any cephalopod — which it uses to feel and grope along the reefs for food. Unlike those of other cephalopods, a nautilus’s tentacles have grooves and ridges instead of suckers. The nautilus is the only cephalopod with an external shell. Much like zebras, nautiluses can be individually identified based on their striped shell patterns.