The Dennis Markuze story has made it to Ars Technica. I am much relieved to have that pest gone from my mailbox, but I was thinking about one point everybody is missing: the human brain seems to have an edge over computers.

I just checked, and the FtB site has accumulated about 2100 spam hits which none of you have seen, but which were automatically intercepted by the software (you aren’t missing much: somebody really wants to sell you shoes, lots of shoes). Markuze was hitting me on email and twitter for more than that, and the thing was, those all got past the filters I’ve got in place. So one obsessed crazy man with minimal technical skill and nothing but persistence outperforms all the spambots out there, at least on the scale of individuals, if not in breadth of attack.

Spammers might want to think about that. Instead of writing a new generation of software to circumvent our filters, maybe they should recruit social misfits with obsessive-compulsive disorder, and write software that amplifies their efforts. You can blame me if they take my advice.

(Also on Sb)

(Also on Sb)

It turns out to be true, at least for bustards, that the fast, flashy life leads to earlier burnout. So what’s my excuse? I dunno.

(Also on FtB)

This is one beautiful plesiosaur, Polycotylus latippinus.

(Click for larger image)
(A) Photograph and (B) interpretive drawing of LACM 129639, as mounted. Adult elements are light brown, embryonic material is dark brown, and reconstructed bones are white. lc indicates left coracoid; lf, left femur; lh, left humerus; li, left ischium; lp, left pubis; rc, right coracoid; rf, right femur; rh, right humerus; ri, right ischium; and rp, right pubis.

The unique aspect of this specimen is that it’s the only pregnant plesiosaur found; the fore and hind limbs bracket a jumble of bones from a juvenile or embryonic Polycotylus. It’s thought to actually be a fetal plesiosaur, rather than an overstuffed cannibal plesiosaur, because 1) the smaller skeleton is still partially articulated, and it’s large enough that it is unlikely it could have been swallowed whole, 2) the two sets are of the same distinctive species, 3) the juvenile is incompletely ossified and doesn’t resemble a post-partum animal, 4) the bones aren’t chewed, etched by acids, or accompanied by gastroliths. I think we can now confidently say that plesiosaurs were viviparous, which is what everyone expected.

There are other surprising details. The fetus is huge relative to the parent, and there’s only one — so plesiosaurs had small brood sizes and invested heavily in their offspring.

(Click for larger image)
Reconstructions of female P. latippinus and newborn young. Gastralia were present in both animals but have been omitted for clarity.

The authors speculate beyond this a bit, but it’s all reasonable speculation. That degree of parental investment in fetal development makes it likely that there would have been extended maternal care after birth, and rather more tenuously, that they may also have lived in larger social groups. The authors suggest that their lifestyle may have resembled that of modern social marine mammals — picture a pod of dolphins, only long-necked and lizardy.

O’Keefe FR, Chiappe LM (2011) Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia) Science 333 (6044): 870-873.

(Also on Sb)