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Cromerian Stage

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The Cromerian Stage or Cromerian Complex , also called the Cromerian ( German : Cromerium ), is a stage in the Pleistocene glacial history of north-western Europe, mostly occurring more than half a million years ago. It is named after the East Anglian town of Cromer in Great Britain where interglacial deposits that accumulated during part of this stage were first discovered. The stratotype for this interglacial is the Cromer Forest Bed situated at the bottom of the coastal cliff near West Runton . The Cromerian stage preceded the Anglian and Elsterian glacials and show an absence of glacial deposits in western Europe, which led to the historical terms Cromerian interglacial and the Cromerian warm period ( German : Kromer-Warmzeit ). It is now known that the Cromerian consisted of multiple glacial and interglacial periods.

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36-703: The core of the Cromerian is the first half of the Middle Pleistocene stage (Ionian) approximately 800-500 ka ago, just before the Anglian glaciation . In terms of Marine isotope stages (MIS) this corresponds to MIS 19 to MIS 13. Some authors instead put the start at MIS 22, corresponding to a start 900 ka ago, which includes the last 100 ka of the Calabrian stage , after the Beestonian Stage . Some sources today correlate

72-547: Is an age in the international geologic timescale or a stage in chronostratigraphy , being a division of the Pleistocene Epoch within the ongoing Quaternary Period. The Chibanian name was officially ratified in January 2020. It is currently estimated to span the time between 0.770 Ma (770,000 years ago) and 0.129 Ma (129,000 years ago), also expressed as 770–126 ka. It includes the transition in palaeoanthropology from

108-622: Is the second subdivision of the Paleolithic or Old Stone Age as it is understood in Europe , Africa and Asia . The term Middle Stone Age is used as an equivalent or a synonym for the Middle Paleolithic in African archeology. The Middle Paleolithic broadly spanned from 300,000 to 50,000 years ago. There are considerable dating differences between regions. The Middle Paleolithic was succeeded by

144-600: The Elster glaciation to MIS 10 instead of MIS 12, while keeping the Cromerian running up to the start of the Elsterian. The result is an end to the Cromerian stage in continental Europe at the end of MIS 11 (400 ka ago), and that the continental Cromerian continues beyond its end in Britain and Ireland and runs in parallel to the Anglian and Hoxnian Stages (MIS 12-11). In the Alpine region

180-809: The Lower to the Middle Paleolithic over 300 ka. The Chibanian is preceded by the Calabrian and succeeded by the proposed Tarantian . The beginning of the Chibanian is the Brunhes–Matuyama reversal , when the Earth's magnetic field last underwent reversal. Its end roughly coincides with the termination of the Penultimate Glacial Period and the onset of the Last Interglacial period (corresponding to

216-565: The Mid-Pleistocene Transition had changed the glacial cycles from an average 41,000 year periodicity present during most of the Early Pleistocene to a 100,000 year periodicity, with the glacial cycles becoming asymmetric, having long glacial periods punctuated by short warm interglacial periods. Millennial-scale climatic variability continued to be highly sensitive to precession and obliquity cycles. In central Italy,

252-707: The Upper Paleolithic subdivision which first began between 50,000 and 40,000 years ago. Pettit and White date the Early Middle Paleolithic in Great Britain to about 325,000 to 180,000 years ago (late Marine Isotope Stage 9 to late Marine Isotope Stage 7), and the Late Middle Paleolithic as about 60,000 to 35,000 years ago. The Middle Paleolithic was in the geological Chibanian (Middle Pleistocene ) and Late Pleistocene ages. According to

288-594: The West Runton Mammoth skeleton was found, the best example of the species Mammuthus trogontherii to be unearthed so far. A significant fossil site, with animal remains dating about 600,000 years ago, is the Mosbach Sands in Germany, named after an abandoned village near Wiesbaden , Germany. Middle Pleistocene The Chibanian , more widely known as the Middle Pleistocene (its previous informal name),

324-515: The notoungulate family Mesotheriidae , Mesotherium , has its last records around 220,000 years ago, leaving Toxodontidae as the sole family of notoungulates to persist into the Late Pleistocene. During the late Middle Pleistocene, around 195,000-135,000 years ago, the steppe bison (the ancestor of the modern American bison ) migrated across the Bering land bridge into North America, marking

360-516: The ǃKung and Mbuti peoples . Both Neanderthal and modern human societies took care of the elderly members of their societies during the Middle Paleolithic. Christopher Boehm (1999) has hypothesized that egalitarianism may have arisen in Middle Paleolithic societies because of a need to distribute resources such as food and meat equally to avoid famine and ensure a stable food supply. It has usually been assumed that women gathered plants and firewood and men hunted and scavenged dead animals through

396-648: The Americas into the Late Pleistocene. There was a major extinction of carnivorous mammals in Europe around the Early-Middle Pleistocene transition, including the giant hyena Pachycrocuta . The mid-late Middle Pleistocene saw the emergence of the woolly mammoth ( Mammuthus primigenius ), and its replacement of Mammuthus trogontherii , with the replacement of M. trogontherii in Europe by woolly mammoths being complete by around 200,000 years ago. The last member of

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432-482: The Cromerian complex have become quite confusing. Great potential for a full breakdown has been provided by the extensive, continental series at Gorleben . Based on a lack of glacial evidence in Western Europe for the Middle Pleistocene (Ionian) before the Anglian glaciation , the Cromerian was originally thought to be a period without major glaciations. However, there is evidence for ice-rafting of material across

468-744: The Middle Pleistocene by an Ionian Age based on strata found in Italy. In November 2017, however, the Chibanian (based on strata at a site in Chiba Prefecture , Japan) replaced the Ionian as the Subcommission on Quaternary Stratigraphy's preferred GSSP proposal for the age that should replace the Middle Pleistocene sub-epoch. The "Chibanian" name was ratified by the IUGS in January 2020. By early Middle Pleistocene,

504-558: The Middle Pleistocene, around 430,000 years ago. This is the oldest found, as of 2016 . After analyzing 2,496 remains of Castor fiber (Eurasian beaver) and Trogontherium cuvieri found at Bilzingsleben in Germany, a team of scientists concluded that, around 400 ka, hominids in the area hunted and exploited beavers . They may have been targeted for their meat (based on cut marks on the bones) and skin. Middle Paleolithic Fertile Crescent : Europe : Africa : Siberia : The Middle Paleolithic (or Middle Palaeolithic )

540-826: The Middle Stone Age inhabitants of the region now occupied by the Democratic Republic of the Congo hunted large 1.8-metre (6 ft) long catfish with specialized barbed fishing points as early as 90,000 years ago, and Neandertals and Middle Paleolithic Homo sapiens in Africa began to catch shellfish for food as revealed by shellfish cooking in Neanderthal sites in Italy about 110,000 years ago and Middle Paleolithic Homo sapiens sites at Pinnacle Point , in Africa. Anthropologists such as Tim D. White suggest that cannibalism

576-557: The Moula rock shelter in France – may imply that Neanderthals, like some contemporary human cultures, may have practiced excarnation for presumably religious reasons (see Neanderthal behavior § Cannibalism or ritual defleshing? ). The earliest undisputed evidence of artistic expression during the Paleolithic period comes from Middle Paleolithic/ Middle Stone Age sites such as Blombos Cave in

612-481: The Neanderthals hunted large game animals mostly by ambushing them and attacking them with mêlée weapons such as thrusting spears rather than attacking them from a distance with projectile weapons. An ongoing controversy about the nature of Middle Paleolithic tools is whether there were a series of functionally specific and preconceived tool forms or whether there was a simple continuum of tool morphology that reflect

648-556: The North Sea from this period. Investigations in the 1950s of oxygene isotopes in deep sea core samples revealed five glacial cycles during MIS 22 - MIS 13. The Mid-Pleistocene Transition to the 100,000 year glacial cycle became established during the Cromerian. Four of the glaciations (MIS 22, MIS 20, MIS 18, MIS 14) were moderate, probably involving low-land glaciation in Scandinavia, but not spreading to England and northern Germany. One of

684-598: The Paleolithic. However, Steven L. Kuhn and Mary Stiner from the University of Arizona suggest that this sex-based division of labor did not exist prior to the Upper Paleolithic . The sexual division of labor may have evolved after 45,000 years ago to allow humans to acquire food and other resources more efficiently. Although gathering and hunting comprised most of the food supply during the Middle Paleolithic, people began to supplement their diet with seafood and began smoking and drying meat to preserve and store it. For instance

720-485: The Upper Paleolithic. Nonetheless it remains possible that Middle Paleolithic societies never practiced cannibalism and that the damage to recovered human bones was either the result of excarnation or predation by carnivores such as saber-toothed cats , lions and hyenas . Around 200,000 BP Middle Paleolithic Stone tool manufacturing spawned a tool-making technique known as the prepared-core technique , that

756-686: The beginning of Marine Isotope Stage 5 ). The term Middle Pleistocene was in use as a provisional or "quasi-formal" designation by the International Union of Geological Sciences (IUGS). While the three lowest ages of the Pleistocene, the Gelasian , Calabrian and Chibanian have been officially defined, the Late Pleistocene has yet to be formally defined. The International Union of Geological Sciences (IUGS) had previously proposed replacement of

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792-501: The beginning of the Rancholabrean faunal stage. Around 500,000 years ago, the last members of the largely European aquatic frog genus Palaeobatrachus and by extension the family Palaeobatrachidae became extinct. The Chibanian includes the transition in palaeoanthropology from the Lower to the Middle Paleolithic : i.e., the emergence of Homo sapiens sapiens between 300 ka and 400 ka. The oldest known human DNA dates to

828-464: The bodies were buried for secular reasons. According to recent archeological findings from Homo heidelbergensis sites in the Atapuerca Mountains , the practice of intentional burial may have begun much earlier during the late Lower Paleolithic , but this theory is widely questioned in the scientific community. Cut-marks on Neandertal bones from various sites – such as Combe Grenal and

864-537: The climate became noticeably more arid from 600 ka to 400 ka. The late Middle Pleistocene was a time of regional aridification in the Levant , with a shallow lake covering what is now the Shishan Marsh drying and developing into a marsh. Eastern Africa's hydroclimate was governed primarily by orbital precession, although modulated significantly by the 100 kyr eccentricity cycle. Along the northwestern Australian coast,

900-816: The corresponding stage is called Günz . The Cromerian had been equated to the Aftonian in North America . However, the Aftonian, along with the Yarmouthian (Yarmouth) , Kansan , and Nebraskan, have been abandoned by North American Quaternary geologists and merged into the Pre-Illinoian . At this time, the Cromerian is correlated with the period of time, which includes the Pre-Illinoian C, Pre-Illinoian D, and Pre-Illinoian E glaciations of North America. Proposals for structuring

936-519: The earliest composite tools, by hafting sharp, pointy stone flakes onto wooden shafts. Paleolithic groups such as the Neanderthals who possessed a Middle Paleolithic level of technology appear to have hunted large game just as well as Upper Paleolithic modern humans and the Neanderthals in particular may have likewise hunted with projectile weapons. Nonetheless Neanderthal usage of projectile weapons in hunting occurred very rarely (or perhaps never) and

972-401: The extent of edge maintenance, as Harold L. Dibble has suggested. The use of fire became widespread for the first time in human prehistory during the Middle Paleolithic, and humans began to cook their food c. 250,000 years ago. Some scientists have hypothesized that hominids began cooking food to defrost frozen meat which would help ensure their survival in cold regions. Robert K. Wayne ,

1008-594: The following Upper Paleolithic period. Middle Paleolithic burials at sites such as Krapina in Croatia (dated to c. 130,000 BP) and the Qafzeh and Es Skhul caves in Israel ( c. 100,000 BP) have led some anthropologists and archeologists (such as Philip Lieberman ) to believe that Middle Paleolithic cultures may have possessed a developing religious ideology which included concepts such as an afterlife ; other scholars suggest

1044-827: The form of bracelets, beads, art rock, ochre used as body paint and perhaps in ritual, though earlier examples of artistic expression such as the Venus of Tan-Tan and the patterns found on elephant bones from Bilzingsleben in Thuringia may have been produced by Acheulean tool-users such as Homo erectus prior to the start of the Middle Paleolithic period. Activities such as catching large fish and hunting large game animals with specialized tools indicate increased group-wide cooperation and more elaborate social organization. In addition to developing advanced cultural traits, humans also first began to take part in long-distance trade between groups for rare commodities (such as ochre (which

1080-556: The glaciations, Marine Isotope Stage 16 (MIS 16), is globally as strong as the most recent glaciations, MIS 6 (main Saale ) and MIS 2 ( Weichsel/Devensian ). There is plenty of evidence in Russia for a major glaciation during this stage, which is called the Don Glaciation and believed to correspond to MIS 16. It is not clear why western Europe seems so unaffected by this major glacial. In 1990

1116-650: The intensification of the Leeuwin Current resulted in an expansion of reefs coincident with the Great Barrier Reef's formation. The Early-Middle Pleistocene boundary saw the migration of true horses out of North America and into Eurasia. Also around this time, the European mammoth species Mammuthus meridionalis became extinct and was replaced by the Asian species Mammuthus trogontherii (the steppe mammoth). This

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1152-552: The theory of the recent African origin of modern humans , anatomically modern humans began migrating out of Africa during the Middle Stone Age/Middle Paleolithic around 125,000 years ago and began to replace earlier pre-existent Homo species such as the Neanderthals and Homo erectus . The earliest evidence of behavioral modernity first appears during the Middle Paleolithic; undisputed evidence of behavioral modernity, however, only becomes common during

1188-511: Was coincident with the migration of the elephant genus Palaeoloxodon out of Africa and into Eurasia, including the first appearance of species like the European straight-tusked elephant ( Palaeoloxodon antiquus ). With the extinction of Sinomastodon in East Asia at the Early-Middle Pleistocene boundary, gomphotheres became completely extinct in Afro-Eurasia, but continued to persist in

1224-519: Was common in human societies prior to the beginning of the Upper Paleolithic, based on the large amount of "butchered human" bones found in Neandertal and other Middle Paleolithic sites. Cannibalism in the Middle Paleolithic may have occurred because of food shortages. However it is also possible that Middle Paleolithic cannibalism occurred for religious reasons which would coincide with the development of religious practices thought to have occurred during

1260-505: Was more elaborate than previous Acheulean techniques. Wallace and Shea split the core artifacts into two different types: formal cores and expedient cores. Formal cores are designed to extract the maximum amount from the raw material while expedient cores are based more upon functional need. This method increased efficiency by permitting the creation of more controlled and consistent flakes. This method allowed Middle Paleolithic humans correspondingly to create stone-tipped spears, which were

1296-640: Was often used for religious purposes such as ritual )) and raw materials during the Middle Paleolithic as early as 120,000 years ago. Inter-group trade may have appeared during the Middle Paleolithic because trade between bands would have helped ensure their survival by allowing them to exchange resources and commodities such as raw materials during times of relative scarcity (i.e., famine or drought). Evidence from archeology and comparative ethnography indicates that Middle Paleolithic people lived in small, egalitarian band societies similar to those of Upper Paleolithic societies and some modern hunter-gatherers such as

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