Kay Behrensmeyer

Last updated
Anna K. Behrensmeyer
Kay Behrensmeyer 2018 (cropped).jpg
Alma mater Washington University in St. Louis
Harvard University
SpouseWilliam Keyser
ChildrenTwo
Scientific career
Fields Taphonomy, paleoecology
Institutions National Museum of Natural History
Thesis The Taphonomy and Paleoecology of Plio-Pleistocene Vertebrate Assemblages East of Lake Rudolf, Kenya  (1973)
Doctoral advisor Bryan Patterson

Anna Katherine "Kay" Behrensmeyer is an American taphonomist and paleoecologist. She is a pioneer in the study of the fossil records of terrestrial ecosystems and engages in geological and paleontological field research into the ecological context of human evolution in East Africa. She is Curator of Vertebrate Paleontology in the Department of Paleobiology at the Smithsonian Institution's National Museum of Natural History (NMNH). At the museum, she is co-director of the Evolution of Terrestrial Ecosystems program and an associate of the Human Origins Program. [1]

Contents

Education and career

Behrensmeyer received her bachelor of Arts degree from Washington University in St. Louis. [2]

In 1968, Behrensmeyer made a detailed investigation of Lothagam, a Kenyan paleontological formation dating to the late Miocene-early Pliocene period. Within the succession, she identified six lithostratigraphic units. She later compiled a chart for the 400 fossil specimens collected in 1967 and published a faunal list for Lothagam 3 in 1976. [3]

While she was a graduate student at Harvard in 1969, Behrensmeyer was invited by paleoanthropologist Richard Leakey to be his team's geologist and map fossil deposits at Koobi Fora in Kenya. [4] She discovered a cluster of stone tools eroding out of a volcanic tuff, an ash layer from an ancient eruption that filled a small paleochannel. The site was named in her honor and the layer was named the Kay Behrensmeyer Site Tuff or KBS Tuff. The tools were similar to those discovered by Mary Leakey at Olduvai Gorge. The team's radiometric dating indicated that the fossils were 2.6 million years old. [5] The dating of the site was controversial, as it contradicted other paleobiological evidence. A later independent investigation revised the date to 1.9 mya. [6]

Behrensmeyer received her Ph.D. in vertebrate paleontology and sedimentology from Harvard University's Department of Geological Sciences in 1973. Her dissertation, published in 1975, showed that the composition of the fossil vertebrate faunas of East Turkana, Kenya, varied with sedimentary environment (channel, floodplain, lake margin), and this provide new information on the taphonomy and paleoecology of hominin-bearing, Plio-Pleistocene sediments . [7] She held post-doctoral positions at UC Berkeley and Yale and taught for UC Santa Cruz's Earth Science Board before beginning her career at the Smithsonian Institution in 1981. [8] Since 1986, she has led research on the geological context of Olorgesailie. [1]

Since 1987, Behrensmeyer has been the co-director of Evolution of Terrestrial Ecosystems Program at the National Museum of Natural History. From 1993 to 1996, she served as Acting Associate Director for Science at NMNH. She has served as Associate Editor for the Paleobiology , PALAIOS and Palaeoclimates journals. From 1985 to 1987, she was on the Board of Associate Editors for the Journal of Human Evolution . She is also an Adjunct Professor at the University of Arizona and George Washington University. [2]

Aside from Behrensmeyer's research into the paleoecology and taphonomy of hominid-bearing deposits in the Olorgesailie basin, Baringo basin and East Turkana, she has conducted a long-term study of the taphonomy of modern vertebrate remains in Kenya's Amboseli National Park beginning in 1975, in collaboration with ecologist David Western. The study involves a census of live animals and carcasses every five to 10 years. The study suggests that fossil animal assemblages in tropical settings can be used to make inferences about ancient habitats when post-depositional taphonomic biases are accounted for. [9] [10] Her other projects include field exploration and analysis of Upper TriassicLower Jurassic vertebrate taphonomy and paleoecology in Arizona and paleoecological research in the Miocene Pakistan Siwalik sequence. [1] Behrensmeyer is also compiling a taphonomic reference collection of bones and fossils at the National Museum of Natural History. [1]

She was named one of the "50 Most Important Women Scientists" by Discover magazine in 2002. [11]

Honors and awards

Selected publications

Behrensmeyer has published over 130 scientific articles.

Related Research Articles

<span class="mw-page-title-main">Taphonomy</span> Study of decomposition and fossilization of organisms

Taphonomy is the study of how organisms decay and become fossilized or preserved in the paleontological record. The term taphonomy was introduced to paleontology in 1940 by Soviet scientist Ivan Efremov to describe the study of the transition of remains, parts, or products of organisms from the biosphere to the lithosphere.

<span class="mw-page-title-main">Olduvai Gorge</span> National Historic Site of Tanzania

The Olduvai Gorge or Oldupai Gorge in Tanzania is one of the most important paleoanthropological localities in the world; the many sites exposed by the gorge have proven invaluable in furthering understanding of early human evolution. A steep-sided ravine in the Great Rift Valley that stretches across East Africa, it is about 48 km long, and is located in the eastern Serengeti Plains within the Ngorongoro Conservation Area in the Olbalbal ward located in Ngorongoro District of Arusha Region, about 45 kilometres from Laetoli, another important archaeological locality of early human occupation. The British/Kenyan paleoanthropologist-archeologist team of Mary and Louis Leakey established excavation and research programs at Olduvai Gorge that achieved great advances in human knowledge and are world-renowned. The site is registered as one of the National Historic Sites of Tanzania.

<span class="mw-page-title-main">Paleoecology</span> Study of interactions between organisms and their environments across geologic timescales

Paleoecology is the study of interactions between organisms and/or interactions between organisms and their environments across geologic timescales. As a discipline, paleoecology interacts with, depends on and informs a variety of fields including paleontology, ecology, climatology and biology.

<span class="mw-page-title-main">Laetoli</span> National Historic Site of Tanzania

Laetoli is a pre-historic site located in Enduleni ward of Ngorongoro District in Arusha Region, Tanzania. The site is dated to the Plio-Pleistocene and famous for its Hominina footprints, preserved in volcanic ash. The site of the Laetoli footprints is located 45 km south of Olduvai gorge. The location and tracks were discovered by archaeologist Mary Leakey and her team in 1976, and were excavated by 1978. Based on analysis of the footfall impressions "The Laetoli Footprints" provided convincing evidence for the theory of bipedalism in Pliocene Hominina and received significant recognition by scientists and the public. Since 1998, paleontological expeditions have continued under the leadership of Amandus Kwekason of the National Museum of Tanzania and Terry Harrison of New York University, leading to the recovery of more than a dozen new Hominina finds, as well as a comprehensive reconstruction of the paleoecology. The site is a registered National Historic Sites of Tanzania.

<i>Paranthropus aethiopicus</i> Extinct species of hominin of East Africa

Paranthropus aethiopicus is an extinct species of robust australopithecine from the Late Pliocene to Early Pleistocene of East Africa about 2.7–2.3 million years ago. However, it is much debated whether or not Paranthropus is an invalid grouping and is synonymous with Australopithecus, so the species is also often classified as Australopithecus aethiopicus. Whatever the case, it is considered to have been the ancestor of the much more robust P. boisei. It is debated if P. aethiopicus should be subsumed under P. boisei, and the terms P. boisei sensu lato and P. boisei sensu stricto can be used to respectively include and exclude P. aethiopicus from P. boisei.

<span class="mw-page-title-main">Meave Leakey</span> British palaeoanthropologist

Meave G. Leakey is a British palaeoanthropologist. She works at Stony Brook University and is co-ordinator of Plio-Pleistocene research at the Turkana Basin Institute. She studies early hominid evolution and has done extensive field research in the Turkana Basin. She has Doctor of Philosophy and Doctor of Science degrees.

<i>Paranthropus boisei</i> Extinct species of hominin of East Africa

Paranthropus boisei is a species of australopithecine from the Early Pleistocene of East Africa about 2.5 to 1.15 million years ago. The holotype specimen, OH 5, was discovered by palaeoanthropologist Mary Leakey in 1959 at Olduvai Gorge, Tanzania and described by her husband Louis a month later. It was originally placed into its own genus as "Zinjanthropus boisei", but is now relegated to Paranthropus along with other robust australopithecines. However, it is also argued that Paranthropus is an invalid grouping and synonymous with Australopithecus, so the species is also often classified as Australopithecus boisei.

<span class="mw-page-title-main">Koobi Fora</span> Kenyan archeological site

Koobi Fora refers primarily to a region around Koobi Fora Ridge, located on the eastern shore of Lake Turkana in the territory of the nomadic Gabbra people. According to the National Museums of Kenya, the name comes from the Gabbra language:

In the language of the Gabbra people who live near the site, the term Koobi Fora means a place of the commiphora and the source of myrrh...

<span class="mw-page-title-main">Glynn Isaac</span> South African archeologist

Glynn Llywelyn Isaac was a South African archaeologist who specialised in the very early prehistory of Africa, and was one of twin sons born to botanists William Edwyn Isaac and Frances Margaret Leighton. He has been called the most influential Africanist of the last half century, and his papers on human movement and behavior are still cited in studies a quarter of a century later.

In archaeology and paleontology a faunal assemblage is a group of animal fossils found together in a given stratum. In a non-deformed deposition, fossils are organized by stratum following the laws of uniformitarianism and superposition, which state that the natural phenomena observable today also apply to the paleontological record and that the oldest stratum will be at the bottom of a paleontological deposit.

<span class="mw-page-title-main">Olorgesailie</span> Archaeological site in Kenya

Olorgesailie is a geological formation in East Africa, on the floor of the Eastern Rift Valley in southern Kenya, 67 kilometres (42 mi) southwest of Nairobi along the road to Lake Magadi. It contains a group of Lower Paleolithic archaeological sites. Olorgesailie is noted for the large number of Acheulean hand axes discovered there that are associated with animal butchering. According to the National Museums of Kenya, the finds are internationally significant for archaeology, palaeontology, and geology.

<span class="mw-page-title-main">Shungura Formation</span> Stratigraphic formation in the Omo river basin in Ethiopia

The Shungura Formation is a stratigraphic formation located in the Omo river basin in Ethiopia. It dates to the Late Pliocene to Early Pleistocene. Oldowan tools have been found in the formation, suggesting early use of stone tools by hominins. Among many others, fossils of Panthera were found in Member G of the formation.

<span class="mw-page-title-main">Gondolin Cave</span> South African cave system

Gondolin Cave is a fossiliferous dolomitic paleocave system in the Northwest Province, South Africa. The paleocave formed in the Eccles Formation dolomites. Gondolin is currently the only described hominin-bearing fossil site in the Northwest Province-portion of the designated Cradle of Humankind UNESCO World Heritage Site. The cave is located on privately owned land and is not accessible to the public. As is the case with other South African Paleo-cave systems with Pliocene and/or Pleistocene fossil deposits, the system was mined for lime during the early 20th century. As a result, the system has been heavily disturbed and consists of only a small active cave, a series of in situ remnant cave deposits, and extensive dumpsites of ex situ calcified sediments produced during mining activities.

Rimasuchus is an extinct genus of crocodile from the Miocene of Egypt and possibly Libya. Only one species - Rimasuchus lloydi - is currently known. It was previously thought to be a species of Crocodylus, but is now thought to be more closely related to the modern African dwarf crocodiles (Osteolaemus).

<i>Menelikia</i> Extinct family of mammals

Menelikia is a genus of extinct Artiodactyl mammals, belonging to the bovids. It lived from the middle Pliocene to the middle Pleistocene and its fossils are found in East Africa.

<span class="mw-page-title-main">Turkana Basin</span> Large endorheic basin mainly in Kenya and Ethiopia

The greater Turkana Basin in East Africa determines a large endorheic basin, a drainage basin with no outflow centered around the north-southwards directed Gregory Rift system in Kenya and southern Ethiopia. The deepest point of the basin is the endorheic Lake Turkana, a brackish soda lake with a very high ecological productivity in the Gregory Rift.

The KBS Tuff is an ash layer in East African Rift Valley sediments, derived from a volcanic eruption that occurred approximately 1.87 million years ago (Ma). The tuff is widely distributed geographically, and marks a significant transition between water flow and associated environmental conditions around Lake Turkana shortly after 2 Ma.

<span class="mw-page-title-main">Brigitte Senut</span> French paleoprimatologist and paleoanthropologist

Brigitte Senut is a French paleoprimatologist and paleoanthropologist and a professor at the National Museum of Natural History, Paris. She is a specialist in the evolution of great apes and humans.

References

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  2. 1 2 "Anna K. Behrensmeyer". National Museum of Natural History. Retrieved 15 October 2013.
  3. Leakey, Meave G.; Harris, John M., eds. (2003). Lothagam: The Dawn of Humanity in Eastern Africa. New York: Columbia University Press. pp. 3–4. ISBN   978-0-231-50760-8.
  4. Morell, Virginia (2011). Ancestral Passions: The Leakey Family and the Quest for Humankind's Beginnings. Simon and Schuster. p. 344. ISBN   978-1-4391-4387-2.
  5. Lewin, Roger (1997). Bones of Contention: Controversies in the Search for Human Origins (2nd ed.). Chicago, Ill.: University of Chicago Press. pp. 153, 190. ISBN   978-0-226-47651-3.
  6. Meredith, Martin (2012). Born in Africa: The Quest for the Origins of Human Life. New York: PublicAffairs, U.S. pp. 78, 81–82. ISBN   978-1-61039-105-4.
  7. Behrensmeyer, A. K. (1975). "The Taphonomy and Paleoecology of Plio-Pleistocene Vertebrate Assemblages East of Lake Rudolf, Kenya" Cambridge MA: Harvard University Press.
  8. "Climate Change and Human Evolution: Evidence from the Fossil Record of East Africa". Suter Science Seminars. Eastern Mennonite University. March 20, 2009.
  9. Wood, Bernard, ed. (2011). "Amboseli live/dead study". Wiley-Blackwell Encyclopedia of Human Evolution. Oxford [etc.]: Wiley-Blackwell. ISBN   978-1-4443-4247-5.
  10. "The Bones of Amboseli Park, Kenya". National Museum of Natural History. Archived from the original on 31 December 2013. Retrieved 16 October 2013.
  11. "Research Newsroom". National Museum of Natural History. Archived from the original on 3 January 2013. Retrieved 15 October 2013.
  12. "SEPM Awards". Society for Sedimentary Geology. Archived from the original on 24 November 2012. Retrieved 11 September 2017.
  13. "SVP 2018 Annual Meeting". Society of Vertebrate Paleontology. Archived from the original on 22 October 2018. Retrieved 21 October 2018.
  14. "2018 Paleo Society Awards". Archived from the original on 2018-05-14. Retrieved 2018-11-06.
  15. "Anna K. Behrensmeyer". www.nasonline.org.
  16. "2020 NAS Election". www.nasonline.org. Retrieved 2020-05-02.
  17. Valentine, James W. (1993). "Land-Based Evolution: (review of) Terrestrial Ecosystems Through Time: Evolutionary Paleoecology of Terrestrial Plants and Animals edited by Anna K. Behrensmeyer, John D. Damuth, William A. DiMichele, Richard Potts, Hans-Dieter Sues, and Scott L. Wing". Science. 260 (5105): 244–245. doi:10.1126/science.260.5105.244.b. ISBN   0-226-04155-7. p. 245