Organisms
pharyngula | March 16, 2009In this new tradition, my wife picks out some image that isn't a squid and has me post it — I think it's maybe to broaden my interests, and occasionally to send me a message.
Oh, right! It's our wedding anniversary! It's been 29 years of fidelity for a pair of infidels so far.
pharyngula | March 13, 2009
The hyper Japanese narration somehow made me think of The Calamari Wrestler.
pharyngula | March 13, 2009Octopus sp.
Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
pharyngula | March 11, 2009One of the evolutionary peculiarities of my favorite lab animal, the zebrafish, and of cypriniform fishes in general, is that they lack teeth. They lost them over 50 million years ago, and don't even form a dental lamina in development. So this photo of a cypriniform, Danionella dracula, gave me a bit of a start beyond just the nice fangs and the ghoulish name.
The story doesn't give much detail, but I'm going to have to look into this. Those are not true teeth, but spiny outgrowths of bone directly from the jaws.
pharyngula | March 10, 2009Santino is my hero. He was kept imprisoned in a cage, and his response was to throw rocks at his obnoxious captors. He'd scavenge the prison yard at night for whatever loose stones he could find, and he'd cache them for the morning. When there weren't enough rocks, he'd pound the concrete retaining wall to knock loose chips of stone. Then when the jailers would show up, zip, zip, zip, a rain of stones on them. You have to respect that kind of defiance and planning.
Santino is a tough guy. Santino is also a chimpanzee.
Doesn't that make you wonder a bit? Chimpanzees fight back at being caged,…
pharyngula | March 9, 2009This may shock you, but the Trophy Wife is not perfect. She doesn't quite get the cephalopod fetish, and thinks I'm a bit…weird. I know! It's unbelievable that there's only one person on the planet who thinks that, and I'm married to her! So, anyway, just to appease the spouse, I'll try to regularly throw in a non-cephalopodian creature. This week, here's something from back home in our mutual birth state of Washington, a crab being eaten by a sea anemone. Try not to read anything Freudian into it — although now that I've mentioned it, everyone will be looking for a metaphor here.
pharyngula | March 6, 2009A plexiglass box full of blinking circuitry might be your image of the future of artificial intelligence, but I'll have you know the real deal will be the achievement of maximum cephalopod density in a convenient cubical container. The tentacles snaking out the sides will just be a bonus.
pharyngula | March 1, 2009This is the phallus of a beetle.
It actually is that spiky, like a medieval torture instrument, and the females don't look as if they enjoy getting penetrated with it — it physically tears up their reproductive tract.
I cringe just looking at it.
pharyngula | February 26, 2009
The media is getting another science story wrong. I keep seeing this discovery of an array of fossil placoderms as revealing the origins of sex, and that's not right. Sex is much, much older, and arose in single-celled organisms. Come on, plants reproduce sexually. A fish is so far removed from the time of origin of sexual reproduction that it can't tell us much about its origins.
Let's get it right. These fossils tells us about the origin of fu…uh, errm, mating in vertebrates.
What we have are a set of placoderm fossils from the Devonian (380 million years ago) of Western Australia (The…
pharyngula | February 24, 2009
This is a photograph of Macropinna microstoma, also called barreleyes. It has a very peculiar optical arrangement. When you first look at this photo, you may think the two small ovals above and behind its mouth are the eyes, and that it looks rather sad…wrong. Those are its nostrils. The eyes are actually the two strange fluorescent green objects that look like they are imbedded in its transparent, dome-like head.
(Click for larger image)Video frame-grab of Macropinna microstoma at a depth of 744 m, showing the intact, transparent shield that covers the top of the head. The green spheres are…
pharyngula | February 20, 2009Octopus cyanea
Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
pharyngula | February 16, 2009This has got to hurt.
That's a yellow shafted northern flicker on the left, and a redheaded woodpecker on the right…and the flicker has got its claws on the woodpecker's tongue. I call foul!
pharyngula | February 13, 2009In a potentially exciting development, researchers have announced the completion of a rough draft of the Neandertal genome in a talk at the AAAS, and in a press conference, and the latest issue of Science has a number of news articles on the subject. And that is a reason for having some reservations. There is no paper yet, and science by press release raises my hackles, and has done so ever since the cold fusion debacle. Not that I think this is a hoax or error by any means, but it's not a good way to present a scientific observation.
Also, the work has some major limitations right now. They'…
pharyngula | February 13, 2009
Sepiadarium kochi
Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
pharyngula | February 10, 2009
Fans of the great Cambrian predator, Anomalocaris, will be pleased to hear that a cousin lived at least until the Devonian, over 100 million years later. That makes this a fairly successful clade of great-appendage arthropods — a group characterized by a pair of very large and often spiky manipulatory/feeding arms located in front of the mouth. Here's the new fellow, Schinderhannes bartelsi:
(click for larger image)Holotype of Schinderhannes bartelsi. (A) Ventral. (B) Interpretative drawing of ventral side. l, left; r, right; A1, great appendage; A2, flaplike appendage; sp, spine; fm, flap…
pharyngula | February 6, 2009"I am not a number — I am a baby cuttlefish!"
Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
pharyngula | February 5, 2009
Just wait — this one will be featured in some cheesy Sci-Fi channel creature feature in a few months. Paleontologists have dug up a fossil boa that lived 58-60 million years ago. They haven't found a complete skeleton, but there's enough to get an estimate of the size. Look at these vertebrae!
a, Type specimen (UF/IGM 1) in anterior view compared to scale with a precloacal vertebra from approximately 65% along the precloacal column of a 3.4 m Boa constrictor. Type specimen (UF/IGM 1) shown in posterior view (b), left lateral view (c) and dorsal view (d). Seven articulated precloacal…
pharyngula | February 4, 2009My teaching schedule this semester is a major time-suck; I'm teaching genetics and all of its associated labs (you really don't want to know how much prep time goes into setting up fly labs), I'm doing some major revision of the content this year, and I've got this asymmetric schedule that packs everything into the first half of each week. So I simply have to protest when those evil (Stein was right!) scientists announce a major discovery on a Tuesday, which just happens to be the very worst day of the week for me. They've gone and found another important whale transitional fossil, Maiacetus…