Out of Africa: The first evidence of Italian peninsula occupation
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Out of Africa: The first evidence of Italian peninsula occupation
ARTICLE IN PRESS Quaternary International xxx (2010) 1–6 Contents lists available at ScienceDirect Quaternary International journal homepage: www.elsevier.com/locate/quaint Out of Africa: The first evidence of Italian peninsula occupation Marta Arzarello*, Carlo Peretto Dipartimento di Biologia ed Evoluzione, Università degli Studi di Ferrara, C.so Ercole I d’Este 32, Ferrara 44100, Italy a r t i c l e i n f o a b s t r a c t Article history: Available online xxx The recent years of research has better defined the conditions of the first peopling of Europe thanks to the discovery of numerous new sites dated between about 1 and 1.5 Ma. In this context, Italy supplied one of the most ancient indirect indications of human presence thanks to the lithic industries founded in 2006 in the Pirro Nord site, dated between 1.3 and 1.6 Ma on the bichronological base. The evidence of an ancient occupation of Italy is also supported by the Monte Poggiolo site, dated to 1 Ma by ESR and paleomagnetism. All those sites are perfectly coherent, from the technological production point of view, with the first lithic complexes found in Europe since 1.8 Ma (short reduction sequences finalized to the flake production) and with the African Mode 1. Ó 2009 Elsevier Ltd and INQUA. All rights reserved. 1. Introduction Pirro Nord (Arzarello et al., 2007, 2009a). The numerical dating for this site is still in progress and so, at the moment, the only way to date the oldest Italian occupation is biochronologically. The lithic assemblage is associated with the Pirro Nord Villafranchian Faunal Unit that can be attributed to a chronological interval between 1.3 and 1.6 Ma BP (Gliozzi et al., 1997; Arzarello et al., 2009a). Any faunal remains were found in association with the lithic complex from Cà Belvedere di Monte Poggiolo, but a numerical dating was made by ESR on the sands from San Biagio and Monte Vescovado and on a marine mollusc from the Monte Poggiolo sands (Yokoyama et al., 1992). Moreover, paleomagnetism shows that the site was occupied during a magnetic inversion phase that probably occurred before the Jaramillo period (Gagnepain et al., 1992, 1999). On the basis of these data, the Monte Poggiolo site is attributed to about 1 Ma BP. In the same region of Monte Poggiolo, other sites are considered to be older than 700 ka on the basis of the characteristics of the lithic assemblages: Villa Acquabona, Bel Poggio, Romanina Nera, Cà Poggio (Peretto, 1996), Serra, and Covignano (Antoniazzi et al., 1998). Those sites are all characterized by very short reduction sequences made on flint pebbles, but no kind of direct dating was possible until the present. In addition, the more recent site of Isernia La Pineta is dated to 610 10 ka by 40Ar/39Ar (Coltorti et al., 2005), that shows the same technological characteristics as the oldest sites of Italy (Minelli, 2006). In the rest of Italy, there are a number of other early period settlements such as Bibbona (Galiberti, 1984) and Collinaia (Sarti and Stoduti, 1982) in Tuscany; Monte Peglia (Piperno et al., 1984) in Umbria; Colle Marino, Arce and Fontana Liri in Lazio (Segre et al., 1982; Biddittu, 1972); and Casella di Maida in Calabria (Gambassini and Ronchitelli, 1984). Although there are no dates for those sites, The first peopling of Europe can be considered as an early phenomenon: the most ancient evidence of humans in Western Europe confirms activity that is older than 1.5 Ma (Carbonell et al., 2008; Parés et al., 2006; Arzarello et al., 2007; Peretto et al., 1998; Martı̀nez-Navarro et al., 1997; De Lumley et al., 1988; Despriée et al., 2006; Crochet et al., 2009). Most of those sites are unfortunately characterized by poor lithic assemblages that do not allow a complete technological approach. The reduction sequences are basically composed by unipolar, orthogonal and multidirectional debitage with, not in all sites, the addition of a centripetal method. The façonnage (shaping), when present, is finalized principally to obtain choppers and choppingtools. Retouch is rare and infrequently present in the sites of Pont de Lavaud (Despriée et al., 2006), Barranco Leon, and Fuente Nueva (Palmqvist et al., 2005). The raw material is always local and collected in secondary position inside alluvial or slope deposits. From a general point of view, the reduction sequences are short and never involve total exploitation of the raw material pebbles. The Italian oldest sites, Cà Belvedere di Monte Poggiolo and Pirro Nord, show the same characteristics, with some particularities due probably to the raw material characteristics. 2. Chronology of the first peopling of Italy From a chronological point of view, the first peopling of Italy (Fig. 1) occurred about 1.5 Ma on the basis of the occurrences of * Corresponding author. Tel.: þ39 0532 293736. E-mail address: [email protected] (M. Arzarello). 1040-6182/$ – see front matter Ó 2009 Elsevier Ltd and INQUA. All rights reserved. doi:10.1016/j.quaint.2010.01.006 Please cite this article in press as: Arzarello, M., Peretto, C., Out of Africa: The first evidence of Italian peninsula occupation, Quaternary International (2010), doi:10.1016/j.quaint.2010.01.006 ARTICLE IN PRESS 2 M. Arzarello, C. Peretto / Quaternary International xxx (2010) 1–6 Fig. 1. Geographical location of the oldest Italians sites. (1) Pirro Nord; (2) Cà Belvedere di Monte Poggiolo; (3) Villa Acquabona, Bel Poggio, Romanina Nera, Cà Poggio; (4) Serra and Covignano; (5) Bibbona and Collinaia; (6) Monte Peglia; (7) Colle Marino, Arce and Fontana Liri; and (8) Casella di Maida. they all show more or less the same characteristics from the technological point of view and confirm that in Italy lithic production was quite homogeneous from the first phases of peopling (w1.5 Ma) to the introduction of the Acheulian about 600 ka BP. 3. Earliest Italian sites 3.1. Regional settings and environment The Pirro Nord site is located in the city of Apricena (Foggia, Gargano promontory, southern Italy) inside the karstic fissures of the actual Cava dell’Erba (Fig. 2). The Villafranchian deposits were deposited during a Pleistocene karst phase. They are all considered contemporaneous on the basis of the evolutive stage of taxa present (Abbazzi et al., 1996). The faunal remains associated with the lithic industry show evidence of fluvial transport but did not allow taphonomical re-elaboration. Evidence of human activities were almost all found inside the karst fissure named ‘‘Pirro 13’’ located in the upper part of the Mesozoic limestone. Between the others, the lithic artifact inside Pirro 13 was associated with Pachycrocuta brevirostris, Homotherium crenatidens, Canis mosbachensis, Axis sp. and Equus altidens (Arzarello et al., 2009b). The Pirro Nord Faunal Unit is attributed to the Final Villafranchian Mammal Age and is considered as reference for biochronology in Western Europe (Gliozzi et al., 1997). The Cà Belvedere di Monte Poggiolo site is located 15 km southwest of Forlı̀, at 214 m asl (Fig. 2). The geological succession in the area around the site is composed of the Plio-Pleistocenic ‘‘argille grigio-blu’’ deposited in the littoral environment covered by the ‘‘sabbie gialle’’ that indicates the final phase of the regression (Ricci Lucchi et al., 1982). In the site area the ‘‘sabbie gialle’’ are absent, replaced by littoral deposits composed by a beach of pebbles in a fluvial sand matrix (Antoniazzi and Piani, 1992). These deposits seem to belong to the same pedogenetic phase as the ‘‘sabbie gialle’’ and have to be considered as lateral transitions of facies inside the same sedimentary complex (Cremaschi, 1983). The lithic assemblage was found inside these strata: the prehistoric population was established near the mouth of the river exploiting the local raw material during a cold period (Cattani, 1992). No faunal remains were found in association with the lithic industries but near there, inside the ‘‘sabbie gialle’’, some remains of fossil vertebrates were found: Mammuthus aff. meridionalis, Dicerorhinus sp., Bison cfr. Schoetensacki and Hippopotamus sp. (Giusberti, 1992). 3.2. Lithic complexes The lithic production is strictly related to the viability and the quality of the raw material, always local flint, as is the case in the other oldest sites of Europe. The raw materials exploited in Cà Belvedere di Monte Poggiolo are flint pebbles collected in littoral cordons where the base camp was probably located. A few pebbles of chert and limestone were also utilized and collected in a secondary position. The raw materials exploited in Pirro Nord are middle or small flint pebbles probably collected in the area near the camp site. The flint comes from the Cretaceous successions of the Gargano promontory and is very homogeneous, sometimes disturbed by tectonic fractures (Arzarello et al., 2009b). In these two cases, humans did not select the dimensions of the pebbles but exploited more or less all types of raw material available near the site. However, in the case of Pirro Nord, the dimensions of the pebbles are not homogeneous, and consequently it is possible to stress more the adaptation of the debitage to the different size of pebbles. In the case of Cà Belvedere di Monte Poggiolo, the available pebbles Fig. 2. (A) Cave dell’Erba, Pirro Nord; the star indicate the locality Pirro 13. (B) Cà Belvedere di Monte Poggiolo. Please cite this article in press as: Arzarello, M., Peretto, C., Out of Africa: The first evidence of Italian peninsula occupation, Quaternary International (2010), doi:10.1016/j.quaint.2010.01.006 ARTICLE IN PRESS M. Arzarello, C. Peretto / Quaternary International xxx (2010) 1–6 have a smaller dimensional variability (max length 10 cm) and so it is not possible to assert a differential exploitation based on the dimensional choice. In Cà Belvedere di Monte Poggiolo, the reduction sequence is complete as also demonstrated by the 76 examples of complete refitting. Inside the site, all stages of the reduction sequence are represented: cortical flakes, preparation flakes, plain débitage products and cores. Those characteristics confirm that the knapping activities were made inside the site as were the domestic activities. This is also demonstrated by the high number of pieces in flint that show traces of utilization (93.4% on a sample of 100 flakes and cores; total pieces 1311) (Peretto et al., 1998). For Pirro Nord, it is difficult to discuss the thoroughness of the reduction sequence, because 235 pieces have been discovered to present (Arzarello et al., 2009b). Secondly, it is not a primary position site because the lithic industries and the faunal remains were transported by water inside the karst fissure where they were discovered. However, the state of conservation of flints is very fresh and assumes that the transportation was not made on a big distance. All steps of the reduction sequence are represented, from decortication to core abandonment, but this data cannot be supported from the statistical point of view. The adopted knapping techniques (Table 1) are generally direct percussion by hard hammer and bipolar percussion in most Italian ancient sites. The utilization of one or the other technique is probably more related to the form of the exploited raw material than to the kind of desired products: the spherical pebbles in Cà Belvedere di Monte Poggiolo, for example, were always opened by a bipolar technique and afterwards exploited by a direct percussion. In Pirro Nord, the bipolar technique is not demonstrated because the longed morphology of the pebbles allows easy use of direct percussion to open the striking platform. In the Italian context, a different comportment can be observed for the Isernia La Pineta site (Minelli, 2006) where the bipolar percussion was largely used in all the phases of the reduction sequences. This choice is related to the characteristics of the raw material (poor quality flint full of tectonic fractures) and to the kinds of activities carried out in the site: principally exploitation of animal carcasses. In this context the flakes only need to have a functional cutting edge and to be produced in an easy and fast way. Those kinds of comportments can be observed also in the other ancient European sites where the bipolar technique represent an easy way to exploit poor raw materials, to open spherical pebbles and to attend to a large production with the minimum investissement technique. However, during the first phases of the European peopling, the bipolar technique was less utilized than the direct percussion in Europe as in Italy. 3 The debitage methods are quite uniform for the Italian ancient sites. This homogeneity can be interpreted as a cultural, a functional or a technological matter. In Cà Belvedere di Monte Poggiolo, the reduction sequences were easy to analyze and describe thanks to the large number of refits. The knapping strategies are unipolar, orthogonal, multidirectional and centripetal. Those methods seem to be not related to the raw material type and dimensions but to the kind of end product. The reduction sequences always start by the detachment of an entame flake by direct or bipolar percussion. The created striking platform was used afterwards with unipolar debitage to obtain long flakes, often with a lateral cortex. If the pebble was not exhausted by this method, the exploitation of a second striking platform was introduced. The second striking platform, generally orthogonal to the first one, was also exploited in a unipolar direction. The utilization of a third and a fourth striking platform is rare, but attested to in the Cà Belvedere di Monte Poggiolo’s lithic collection. Where demonstrated, the dimensions of the end products became smaller, but the morphologies are similar to the ones obtained by a unipolar and an orthogonal method. The debitage products are rectangular or trapezoidal and they show, in most cases, at least two cutting edges (Fig. 3). In Pirro Nord, the knapping methods are strictly related to the raw material dimension. The small pebbles (up to 5 cm) were exploited by a centripetal method and the bigger pebbles (up to 12 cm) were exploited by a multidirectional method. The centripetal exploitation was always organized by the same stages of the reduction sequence: (1) opening of the striking platform (the entame flake removed more or less one-quarter of the raw material volume) by direct percussion generally in correspondence with an irregularity of the pebble; (2) use of the first negative as a striking platform to obtain a totally corticated flake; (3) use of the second negative as a striking platform to start the exploitation in a centripetal way; (4) continue with the centripetal debitage in order to obtain 3–5 flakes. Those flakes are often triangular and lateral cortical debordants. The striking platform is, in most cases, cortical because just the first remove is made from an unnatural striking platform (the second removal). The homogeneity of those debitage products can be interpreted as intentional in terms of researched products, but for this kind of raw material (small pebbles) the centripetal method is the one that obtains the maximum exploitation of the raw material without production of numerous cortical flakes. In Pirro Nord, the large pebbles were exploited by a multidirectional method using 3–5 striking platforms (c.f. SSDA, Forestier, 1993). The morphology of the end products is differentiated, and they are generally longer and larger than the ones coming from a centripetal method (Fig. 4). Table 1 Principal technological characteristics of the oldest European sites (Arzarello et al., 2009b; Carbonell et al., 2008; Crochet et al., 2009; De Lumley et al., 1988; Despriée et al., 2006; Minelli, 2006; Palmqvist et al., 2005; Peretto et al., 1998) Raw materials Percussion techniques Knapping methods Façonnage Lézignan le Cèbe Quartzite and basalt Unipolar and orthogonal Yes: one chopping-tool Pirro Nord Flint Flint, silicified limestone, limestone and quartz Flint and limestone Quartz Unipolar, orthogonal, multidirectional and centripetal Unipolar, orthogonal, multidirectional and centripetal Unipolar and orthogonal Unipolar, orthogonal and multidirectional No Fonte Nueva and Barranco Leon Elefante Pont de Lavaud Direct percussion by hard hammer Direct percussion by hard hammer Direct percussion by hard hammer and bipolar percussion Monte Poggiolo Flint (rare limestone and chert) Le Vallonet Limestone Isernia La Pineta Flint and limestone Direct percussion by hard hammer and Bipolar percussion Direct percussion by hard hammer and rare bipolar percussion Direct percussion by hard hammer Direct percussion by hard hammer and Bipolar percussion Unipolar, orthogonal, multidirectional and centripetal Unipolar, orthogonal, multidirectional and centripetal Unipolar, orthogonal, multidirectional and centripetal Yes No? Yes No Yes Yes: on limestone only Please cite this article in press as: Arzarello, M., Peretto, C., Out of Africa: The first evidence of Italian peninsula occupation, Quaternary International (2010), doi:10.1016/j.quaint.2010.01.006 ARTICLE IN PRESS 4 M. Arzarello, C. Peretto / Quaternary International xxx (2010) 1–6 Fig. 3. Flint lithic industry from Cà Belvedere di Monte Poggiolo. (A) Core and flakes; and (B) core and flakes refitted. Fig. 4. Flint lithic industry from Pirro Nord. (1–3, 6, 8) flakes with centripetal removals; (4) flake with unipolar removals; (5) exhausted centripetal core; (7) proximal fragment of a cortical flake; (9) waste flake. Please cite this article in press as: Arzarello, M., Peretto, C., Out of Africa: The first evidence of Italian peninsula occupation, Quaternary International (2010), doi:10.1016/j.quaint.2010.01.006 ARTICLE IN PRESS M. Arzarello, C. Peretto / Quaternary International xxx (2010) 1–6 In both sites the façonnage seems to be absent: in Pirro Nord there is no element that can be interpreted as a façonnage product. In Cà Belvedere di Monte Poggiolo, however, it was the usewear analyses that allowed understanding that the ‘‘chopper like’’ elements were cores, and they did not show any utilization traces. 4. Conclusions The Italian peninsula gives interesting data defining the time and the way of the first European peopling. The two oldest sites, Pirro Nord and Cà Belvedere di Monte Poggiolo, dated to about 1.5 and 1 Ma, demonstrate that the Homo, probably coming from the Levantine corridor, was occupying the peninsula before 1 Ma. Those sites, as the other Italian ancient sites, show that the lithic technology during the first phases of occupation was essentially opportunistic, finalized to the exploitation of good local raw material. The reduction sequences were always short and finalized to obtain flakes that, for the oldest Italian sites, were very rarely retouched. This technological comportment is probably related to the activities carried out inside the sites and specifically to the intensive exploitation of animal carcasses as shown for Monte Poggiolo and, in a more recent period, Isernia La Pineta. In this context, the unipolar, orthogonal and multidirectional methods represent the easiest ways to obtain a large number of flakes with the minimum technical investment. On the other hand, the centripetal method can be interpreted as an adaptation to the morphology of raw material because, for the Italian case, only the small spherical pebbles were exploited in this way: in these kinds of morphologies unipolar debitage produces smaller flakes than the centripetal method as shown by the experimentation made on the raw material exploited in Pirro Nord. The only uniqueness of the oldest Italian sites is the late appearance of façonnage. This distinctiveness is probably related to the fact that almost the only raw material exploited was flint. In the other sites of Europe, where the façonnage is present for this period, it was made on other raw materials such as limestone, volcanic rocks, quartz or quartzite. The lithic assemblages from Pirro Nord and Monte Poggiolo, as well the other ancient Italian sites, can be perfectly integrated in the European panorama and contribute to show that the first occupation of Western Europe was made by an human group with a homogeneous technological tradition, the same one found in the African Mode 1. 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Please cite this article in press as: Arzarello, M., Peretto, C., Out of Africa: The first evidence of Italian peninsula occupation, Quaternary International (2010), doi:10.1016/j.quaint.2010.01.006