What Can We Learn From Animal Bones?

Animal bones found at archaeological excavations can provide valuable information about the past. They can tell us about butchery and eating habits, tool use, and the environment the bones were disposed of or buried in.

First, we must identify which animal the bones belong to. We can look at the overall size and robusticity of the bones, as well as the cranium (skull) and the mandible (jaw). The size, curvature, and profile of the mandible display distinct differences between animals. Sheep mandibles flare at the curve of the jaw, which differs from the more sloping profile of pig mandibles.

Pigs have one of the most distinctive teeth of domestic mammals. As omnivores, their teeth need to be able to both slice and grind their food, and so they display more pronounced canines and incisors compared to herbivores. Their teeth have flat shaped cusps ideal for their diet, this contrasts with the “W” shaped profile of sheep teeth, deer and cattle.

Sheep mandible (left), pig mandible (right)

Once the bone has been identified, we can examine the texture for signs of use by humans. Looking at the long bones for marks and scrapes can indicate intentional defleshing and butchery.

Differences in butchery methods and skill can lead to differences in cut marks, and it can sometimes be difficult to identify signs of intentional butchery. The clearest way to do so is by observing a V-shaped cross section. This V shape is characteristic of cutting with a lithic or metal knife, whereas a U-shaped mark indicates stone tools were used. 

Sheep tibia with cut marks (left), split cow radius (right)

Worked bone is also common, and indicates bone was also used to make tools, decorations and jewellery. Bone can be polished and incised with a decorative pattern.

This worked Roman sheep metapodia that was used as a handle for a blade or utensil

The colour and condition of the bones can also reveal information about the environment the remains were discarded or buried in, as well as actions of other animals.

When bones are discarded there is often still meat on the bone, and this can attract rodents which leave distinct parallel grooves and scrapes.  

A bright white bone indicates it was bleached by sunlight, whereas black and dark brown suggest exposure to bacteria, fungi and soil minerals. Green marks indicate contact with copper; this is a frequent occurrence in human remains due to grave goods. By noting these observations, we can construct a profile of the animal's environment.

Overall, there is much to be learned from animal bones in the archaeological context!

Lauren

Collections placement student

 

 

Gallop through History

The ability to complete hard jobs with minimal effort is an apt way to describe most technological innovations ever created by man.  For science week the decision to delve into the technology surrounding animal husbandry, in particular the Equus (horse in the language of the Romans: Latin.)

Prime Minister Winston Churchill once said: “The substitution of the internal combustion engine for the horse marked a very gloomy milestone in the progress of mankind.” 

This is certainly true, and although the day of the horse as the centre of many of our technological innovations is long past, I hoped to in some small way honour the creature that I consider man’s second best friend. 

When we first domesticated the horse, around 3500BC, it became quickly apparent that the creature would need proper treatment if it was to perform the heavy labour that was required of it.  Just as an army must have good boots to march many miles, the horse must also be provided with premium footwear.  Working in poor conditions caused horses to become lame, which was solved by the horseshoe; a sheet of metal hammered into the hoof to form a protective lining.  I hear all ye animal lovers cry out in indignation, but fear not!  The shoe, when fitted properly, only goes through the horse’s equivalent of a fingernail. 

Medieval Guildhall type horseshoe (left), post-medieval horseshoe (right)

Above you can see the evolution of the horseshoe from a medieval Guildhall type shoe to a later 17^th century style.  The style changes to better fit the horse, the inner arch point disappears with time.  A further point of interest is the overall greater size of the medieval shoe, likely for a draft horse (a horse that would have pulled a heavy wagon.) 

17th-18th century rowel spur

Another noteworthy object in our beautiful collection is a 17^th- 18^th century rowel spur (albeit missing the rowel - the circular spinning part.  When the horse became a practical way for our ancestors to get around, and even later sit atop and charge battle, the spur was developed so that the rider could communicate more complex manoeuvres to his mount.  At first the ‘prick spur’ did little more than to jab the horse but later the rowel spur was developed to be more gentle. 

Through my journey into the Roman Baths Collection I have only deepened my already considerable respect for the horse and those who mastered it, as Churchill said, for the “progress of mankind.” 

Cameron

Volunteer

Festival of Archaeology: Baffling Bones!

Last month, we decided to assemble a table of animal bones and activities for the Festival of Archaeology, which was held at the Roman Baths on Monday 17^th July. This involved sorting through and selecting an appropriate variety of animal bones, that were suitable for the public to handle and use for the activities.

Once we had chosen the bones, we then had a task of identifying what part of the skeleton they came from and what animal it belonged to (this could be hard, especially if they were broken!) After going through 5kg of assorted animal bones and fragments, we had a huge mixture, that ranged from a pig’s vertebrae (part of the spine) to a horse’s tibia (upper back leg bone) and a cow’s mandible (jaw).

Vicky and Maddy with their 'Baffling Bones!' handling table

We also set up an activity called “Baffling Bones!”, the aim of this was to see if people could identify the bones provided, and try to figure out which animal they came from. For the younger children, there was a game, where they were given a picture of a cow’s skeleton, and they had to put the labels of bones in the correct places to win a sticker!

On the table, we also had a cow’s skull which was found in the Temple Precinct (thought to be medieval) and photos of the Temple Precinct under excavation. 

I brought the bones out again for Tuesday Times Tables the next day, and had a total of 96 visitors in 2 hours!

If you missed the Festival of Archaeology or the start of our Tuesday Times Tables, don't panic! Handling tables continue every Tuesday evening until the 29^th of August.

Maddy

Placement Student