Final exam 1

Classic Neanderthal Discovery

• Classic Neanderthal remains were first discovered in 1856 by workmen who uncovered fossil bones near Düsseldorf in the Neander Valley of Germany.

Anatomical Points Relevant to Homo sapiens and Neanderthals

1. Brow Ridges (differences between male and female)

2. Forehead Angle (variations between male and female)

3. Skull Width (angles on the side of the head)

4. Occipital Torus/Protuberance (male/female differences)

5. Size of Face

6. Chin Shape (square or pointed chin differences)

7. Nasal Width

8. Maxilla

9. Shape of Eye Orbits

Geographic Range of Neanderthals

• Neanderthals extended their range from western Europe to central Asia and as far south as the Levant.

• Evidence of hearths and rings of mammoth bones found at various sites suggests the use of skin tents as shelters in open areas, indicating they lived in the open more often than in caves.

• Well-preserved remains are often found in caves, but sites like Krapina in Croatia have produced over 80 Neanderthal individuals.

Neanderthal Emergence

• Neanderthals appeared around 300,000 years ago. Based on DNA evidence, they diverged from the Homo sapiens line approximately 600,000 years ago.

• The earliest remains of Neanderthals were found at the Atapuerca site in Spain. There are no Neanderthals found in East Asia; only Archaic Homo sapiens remains are present in that region.

Neanderthal Evidence

• Altamura, Italy, ca. 150,000 years old Neanderthal skeleton with all bones and DNA recovered.

Lifestyle and Diet of Neanderthals

• Likely big game hunters and scavengers, with a tool kit oriented towards meat and hide processing.

• Dietary evidence shows high meat consumption as teeth exhibit little enamel wear.

• Most sites are temporary camps used to exploit nearby game; hunting was focused on dense herds of reindeer common in Europe.

• They probably used trapping devices for smaller game.

Theories on Modern Human Origins

Multi-Regional Hypothesis

• Proposes that Homo erectus evolved independently into Archaic Homo sapiens, leading to Neanderthals in Europe and Southwest Asia.

• Archaic Homo sapiens then evolved into modern Homo sapiens.

• Suggests multiple origins on three continents: Europe, Africa, and Asia, with populations separated by 1.5 million years of evolution.

• Regional characteristics reflected in long-term evolution.

Principal Assumption of Multi-Regional Hypothesis

• Continuous local evolution in different regions with some limited gene flow between regions in the last 1.5 million years.

• Argues for continuity between Neanderthals and modern Europeans.

Problems with the Multi-Regional Hypothesis

1. Distinct Neanderthal populations maintained their traits throughout the period, leading up to extinction around 29,000 years ago.

2. Question of whether Neanderthals were absorbed into the gene pool of Early Modern Humans or replaced through competition.

Replacement Hypothesis (Recent African Origins Hypothesis/Out-of-Africa Hypothesis)

1. Asserts Homo sapiens evolved first in Africa and then spread worldwide after 100,000 years ago.

2. Modern populations are said to have shallow roots.

3. Anatomically modern humans speciate from only one African Archaic Homo sapiens species.

Questions Surrounding the Replacement Hypothesis

• Were humans reproductively isolated from other Archaic Homo sapiens populations?

• Are Neanderthals considered a separate species from Homo sapiens?

• Were there hybrid forms?

• Were Neanderthals as intelligent as humans?

• Neanderthal material culture lacks a symbolic legacy compared to humans.

Assimilation Model

• Proposed by Trinkhaus (2005):

• Early Modern Humans outside East Africa include admixture of late Archaic and modern traits involving varying degrees of assimilation.

Ultimate Demise of Neanderthals

• Several potential factors for extinction:

1. Competition with modern Homo sapiens.

2. Eradication by Early Modern Humans.

3. Interbreeding between Neanderthals and modern Homo sapiens.

   • Example: Lagar Velho site in Portugal dated to 25,000 years ago.

Neanderthal Timeline of Archaeological Findings

• Upper Paleolithic and Middle Paleolithic timelines provide context for Neanderthals and modern humans:

  • Specific timeframes denote the coexistence and differentiation of the two species.

Anatomical Characteristics of Neanderthals

Skull Features

• Cranial capacity ranges from 1300 to 1640 cc.

• Lower cranial vault, flatter crown than Homo sapiens, bulging out at the back and sides.

• Prominent brow ridges noticeably reduced in early modern humans.

• Occipital protuberance (bun) present.

• Receding chin or no defined chin.

Evolution of Vocal Tracts

• Neanderthal vocal tracts differ little from modern humans; the presence of the hyoid bone suggests some capacity for speech.

Teeth Structure

• Neanderthal teeth protrude forward due to inflated maxilla, creating a retromolar gap after the third molar not seen in other hominids.

• They have larger pulp chambers, thinner enamel, and wear indicative of a meat-heavy diet.

• Diagonal scratches on front teeth imply left and right-handed use in cutting meat.

• The observed ratio is approximately 10% left-handed and 90% right-handed individuals using the "stuff and cut method" as seen in modern hunter-gatherers.

Post-Cranial Skeleton

• Anatomically, Neanderthals possess wider clavicles, rib cages, and shoulders compared to modern humans.

• Features of the skeleton include larger knees and elbows.

• Musculature of Neanderthals is highly developed with pectoral muscles approximately double the size of modern humans.

• Adaptations align with Bergmann's Rule, indicating body size and shape adaptations for cold climates for heat conservation.

• Despite robust forms, they exhibited the same range of motion as Homo sapiens.

• Evidence of powerful grip strength due to tendon attachments in fingers.

• Neanderthal hand anatomy suggests a stronger grip than modern humans.

Tools and Culture

Mousterian Technology

• The emergence of Mousterian style flake tools marks technological advancements.

  • Evolution from basic handaxes to diversified core and flake technology.

Tool Types

• Predominantly flake tools: knives, scrapers, and points are characteristic of the Mousterian toolkit.

• Mousterian tools reflect a wide variety of functional applications, with different industries shaped by cultural influences.

Levallois Technique

1. Involves preparatory steps for flake production, starting with the working of a stone block.

2. Includes creating a prepared striking platform.

3. Results in a diverse range of usable flakes and tools with specified shapes and sizes.

Community and Social Structure

Social Organization

• Neanderthal communities comprised small hunting bands sharing common language and extended families.

• They engaged in cooperative hunts with other groups during certain times of the year.

Subsistence Strategies

• Primarily hunting large herd animals like bison, horse, red deer, reindeer, and ibex to support social structures.

• Scavenging and some wild plant collection occurred, with evidence of starches found on Neanderthal teeth.

Settlement Patterns

• Involved seasonally planned movements between productive resource areas for hunting and gathering.

• The presence of known productive resource areas indicates migration patterns and habitation preferences.

Community Activity Areas

• Evidence shows a focus on hearths, indicating domestic activity centers in rockshelters and varying levels of communal interaction.

Burial Practices and Rituals

Evidence of Burial Practices

• Grave burials sometimes include grave goods and red ochre.

• Approx. 60 documented burials with few known for earlier hominids like Homo erectus.

• Ritualistic elements present, including the careful positioning of bodies and grave offerings.

Burial Sites

• Sites such as Skhul, Qafzeh, Amud, Shanidar, and Kebara show intentional, well-defined burials with associated artifacts.

• Ritual practices offer insights into Neanderthal beliefs and community structure, reflecting an emergent complexity.

Key Findings from Specific Sites

• Krapina, Croatia: Significant collection (approx. 80 individuals), evidence of high injury rates suggesting high-risk lifestyles.

• Vindija Cave: High meat diet indicated from DNA samples, showcasing dietary practices.

• Shanidar Cave: Unique burial ritual evidenced by flowers found in graves, possibly implying symbolic behaviors.

• Zafarraya Cave: Adult and juvenile remains found alongside Mousterian tools and faunal evidence showcasing lifestyle and survival strategies.

Cultural Evidence and Artifacts

Noteworthy Archaeological Findings

• Artifacts discovered in Spain dating to approximately 65,000 years ago imply Neanderthal artistic expression and cognitive capabilities.

• Red ochre and incised objects from sites like Blombos Cave hint at complex cultural practices associated with symbolic meaning.

Demise of Neanderthals

• By 30,000 years ago, Neanderthals appeared to have become extinct, potentially replaced or absorbed by modern Homo sapiens due to competition and evolving language and adaptive strategies.

Comparisons between Neanderthals and Homo sapiens

• Key anatomical and behavioral distinctions highlight the survival advantages and cultural complexities of early modern humans over Neanderthals.

Summary of Neanderthal Findings

• Continuous research and discovery of skeletal and cultural artifacts enhance our understanding of Neanderthals, informing debates on human evolution, adaptation, and extinction processes.