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paleoanthropology, genetics and evolution

field sites

  • Field notes

    Wed, 2011-01-05 19:30 -- John Hawks

    The NY Times' "Notes from the field" feature is following paleobotanist Bonnie Jacobs, working a fossil field locality in the Mush Valley of Ethiopia:

    None of us has ever experienced a site like this. Not only are the shales full of leaf fossils, but we have now also found beautiful and important fossil bones, including the tooth of a small mammal and the scapula of an artiodactyl. (This is an order of hoofed animals that are also known as even-toed ungulates — picture a mammal that walks on its tippy-toes, like a gazelle.)

    These discoveries mean there is great potential for finding other mammals here, including primates. This site will fill a gap in the record of African vertebrate evolution — there are no others of this age known.

    The fossils are 22 million years old, which would be a wonderful time to have primates represented. I hope they find some!

  • Permit problems circa 1928

    Wed, 2009-08-26 08:30 -- John Hawks

    While reading the history of paleontological excavations in the Fayum, I found many articles dealing with the area's classical archaeology. One article, by Gertrude Caton-Thompson (1928) gave an interesting account of conflicts between field excavations and permit-seeking from government officials. Since this has been a recurrent problem over the years, I thought it would be worth giving a couple of quotes:

    Tranquil in the tradition which forbids appropriation of another person's work without inquiry as to their intentions to continue it, I found to my dismay, when applying in the spring of 1927 for renewal of concession, that, owing to alleged sensational discoveries (a great prehistoric cemetery; shelter with breccia, ranging from Acheulean to Campigny; rows of dolmens; pile-dwellings, etc.) by Count de Prorok, working unauthorised in our vacated area from the University of Michigan Expedition's base, an American expedition had secretly applied for, and been virtually accorded the N. Fayum concession. Prolonged negotiations with the Dept. of Antiquities, so devoid of prehistorians as to be unable to verify the authenticity of the Fayum discoveries, resulted in acknowledgment of our moral right to continue the work in which we had led the way, but left undefined the area to be assigned to us. The positions of the sites coveted by the Oriental Institute of Chicago were widespread: no attempt was made from that quarter to alleviate our position; and on arrival in Egypt in November we found ourselves re-allotted a restricted concession within the area we had already exhausted both prehistorically and geologically, sandwiched in between Chicago's western concession near Qasr - el - Sagha, containing the "Paleolithic cave," and their eastern one near Kom Ashim, containing the "prehistoric cemetery " and " dolmens." The black-line square on our map (Fig. 1) shows the area held the first two seasons; the intermittent line halving it the one allotted to us last season. In view of the grave inadequacy of this concession, I applied at once for a second one, covering the very difficult ground at the west-end of the lake: this was granted in. January.

    Caton-Thompson had quite a storied career; after these archaeological surveys of the Fayum, she excavated Great Zimbabwe and mentored Mary Leakey. As for her permit troubles, the end result of being forced to visit the same site for several seasons in a row was a set of discoveries that an archaeologist today would be pretty thrilled to find:

    In the meanwhile we settled down on our old northern ground to wring such her drops of evidence from it as ironic gods might help us to obtain. They sent torrential rains. The discovery of the Ptolemaic irrigation system resulted, due to growth of vegetation upon the buried, sand-filled channels (P1. G., Fig. 1). Much as the growth of weeds helped us to trace their course, anything approaching a complete map of the system was possible only by prolonged investigations, making calls upon the detailed knowledge of levels collected in previous seasons.

    ...

    The other unexpected find of the season was that of extensive Old Kingdom gypsum works in the northern hills bounding our concession. A splendid outcrop of pure gypsum in massive formation, nearly a mile long, a quarter broad, and about 15 feet thick, had been extensively used in the IIIrd and possibly early IVth Dynasties (2900 B.C. circa), mainly, it would seem, to obtain material for the plaster and mortar required in the construction of the earlier Pyramids and Pyramid cemeteries, less than 30 miles distant by desert route....Over 3,000 defective vases, discarded before completion, were counted in, or on, the workshop mounds, hinting at the great numbers which were exported.

    So working the same field site for several seasons seems like a rational thing for the government to have wanted!

    Although in this case it was probably unanticipated returns. In any event, the kinds of discoveries that would drive a long career today were small potatoes for 1920's archaeology. On to bigger and better things!

    References:

    Caton-Thompson G. 1928. Recent excavations in the Fayum. Man 28:109-113.

  • Round the year fieldwork to begin at Lake Turkana

    Wed, 2008-05-14 10:53 -- John Hawks

    A nice article in the May Scientific American by writer Fredric Heeren reviews the new Turkana Basin Institute:

    Researchers now claim to have found a way to collect fossils quickly while motivating the people to protect their heritage, a plan that involves a shift from 10-week field seasons to 50 weeks of fossil collecting annually.

    The activity will fall under the aegis of the newly formed Turkana Basin Institute (TBI). Guided by Richard Leakey, his wife Meave and daughter Louise, it has raised $2.1 million to build a permanent field station at Ileret, east of Lake Turkana. Since April 2007, this camp has been transformed from a few tents into a field worker's wish list: a stone lab with plenty of curatorial space, staffed kitchens, metal prefab buildings and a garage with a full-time mechanic. The directors hope that year-round work will accelerate fossil recovery fivefold. Next year a second station will be built on the lake's west side.

    The article goes slightly into some disagreements about the role of the institute and its relationship to ongoing field sites.

    The TBI, connected to Stony Brook University has a website, which is very slick-looking -- but its captions sloppily still include Latin filler instead of actual information. I hope they get a discount on the design!

    Anyway, it generally sounds like a good idea. Considering the number of permanent year-round field stations in primatology, it only makes sense to have such a facility for productive paleoanthropological field sites. I only wish there were more field sites that justified the investment!

  • Olduvai overlap

    Wed, 2007-07-04 23:41 -- John Hawks

    Rex Dalton reports in this week's Nature on permit problems in Olduvai Gorge:

    For 18 years, the Olduvai Landscape Paleoanthropology Project (OLAPP) -- led by anthropologist Robert Blumenschine of Rutgers University in New Brunswick, New Jersey, archaeologist Fidelis Masao of the University of Dar es Salaam and Jackson Njau, principal curator at Tanzania's National Natural History Museum in Arusha -- has collected plant and animal specimens to learn how these early relatives of man lived in the region (R. J. Blumenschine et al. Science 299, 1217-1221; 2003).

    Last summer, the OLAPP team was distressed to learn that Tanzanian officials had issued permits to a group led by Manuel Domínguez-Rodrigo, of Complutense University in Madrid, and Audauz Mabulla, of the University of Dar es Salaam, to dig within the OLAPP region. The OLAPP researchers then found the competing group a kilometre away from their campsite, probing trenches the OLAPP team had dug near the bed where Leakey uncovered 'Zinj', the original P. boisei skull.

    I don't know anything about the details of this dispute, but the article seems to tilt toward the OLAPP point of view. It quotes Domínguez-Rodrigo, but doesn't really provide any detail that might support his team's point of view.

    The article does provide some details intended to undercut the claims that others claimed they made, but they claim they didn't claim. You follow? Me neither. It's a short he said, he said kind of article that doesn't do anything but flag a "controversy." These kinds of articles always irritate me.

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Neandertals

For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.

Denisova

From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.

Acceleration

The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.

Malapa

Just outside Johannesburg, the Malapa site is producing some of the most exciting finds in human evolution. This site is the headquarters of the Malapa Soft Tissue Project.