Tag Archives for bone

Friday mystery object #138 answer

On Friday I gave you this object to identify:

The idea was to provide a sense of how tricky it can be to identify bits of postcranial bone, even fairly characteristic bits like the humerus (which is what this is).

There were various suggestions, with sheep, goat and deer all getting a mention, but henstridgesj and Jake both got the same identification as the collector when they suggested  Continue reading →

Friday mystery object #138

Postcranial bones are found more often than skulls, but they can be harder to identify since they don’t have such diagnostic characteristics (like teeth). So, any idea what this piece of postcranial skeleton is and what it comes from?

As usual you can put your answers below and I will do my best to respond (within my technological and temporal constraints). I’m sure some of the other biology types will be willing and able to give guidance. Good luck!

Friday mystery object #137 answer

On Friday I gave you this mystery object to identify:

Unfortunately I was unable to respond to comments on Friday, as my laptop had to go in for repairs and my phone has reached the end of its useful life as an internet device after 4 years faithful service. For the answer this week I had to drag out my old laptop, which has meant 2 hours of twiddling thumbs as the machine started up and dealt with various updates…

In some ways it was a good thing that I wasn’t able to comment, since it would have ruined the fun from the outset. Jake was straight in there, wondering if it was really as easy as it looked – and it was. Rachel, Jack Ashby and Barbara Powell also plumped for the right answer, while several others came very close when they went for a greedy relative. This is in fact the skull of a juvenile  Continue reading →

Friday mystery object #135 answer

On Friday I gave you this object to identify:

I thought it might prove quite tricky, yet several of you managed to work out what it was and which animal it came from.

Jake spotted that it was from a young animal – as you can see from the unfused ends of the bone. He also noticed that it was a bit of a strange shape, a bit like a tibia, but actually a radius.

Barbara Powell suggested that it belonged to an animal built for power rather than speed and henstridgesj suggested one such critter – the Aardvark. Although that wasn’t right, or even close in terms of evolutionary relationships, it was very close from the perspective of functional adaptations.

After that it was a short step to the same answer that I decided on when I had to identify this piece of bone. Barabara Powell, henstridgesj and Steven D. Garber, PhD all converged on the answer of  Continue reading →

Friday mystery object #135

This Friday I’ve decided to really challenge your identification skills with a single bone that I found in the Horniman’s collections.

There was no information of any kind with this specimen, although the material it shared a box with was acquired from the King’s College Comparative Zoology collection. That means that it could be from pretty much any animal on the planet. What do you think it is? (N.B. since it is tricky I’ve given you an image from every angle.)

As usual, you can put your questions, comments and suggestions below and I’ll do my best to respond during the day. Good luck (I think you may need it).

Friday mystery object #134 answer

On Friday I gave you a very nice specimen from the Horniman Museum to identify:

I chose this partly because it’s a great mount and partly because I needed to check the identification, which was out of date.

You all did a great job of breaking down the various options – and there were a few. Jake made the comment:

Is it dippy or a bit ruff ?

This I took as a question about whether the specimen was a Kangaroo Rat (of the genus Dipodomys) or a Rufous Rat-kangaroo (Aepyprymnus rufescens). There was another interpretation that fit with the dippy clue – the correct Family name, which is Dipodidae.

Barbara Powell and Jamie Revell were in the right area and henstridgesj suggested J.j. which was pretty much there, assuming he meant Jaculus jaculus. It is in fact the skeleton of the  Continue reading →

Friday mystery object #133 answer

Friday’s mystery object was meant to be a bit of a challenge:

Post-cranial bones can be tricky to identify, especially if you don’t have much comparative material available.

The first challenge was to work out which bits of bone are present – something that Rhea and Jake managed very well. This particular specimen is composed of a broken portion of right mandible (showing the coronoid process, condyloid process and angular process), the left ilium, and the first three cervical vertebrae (which include the axis and atlas bones).

Identifying the species was a bit more tricky using just these few bits of bone, but several of you managed to get there. Henstridgesj was the first to suggest  Continue reading →

Friday mystery object #129 answer

On Friday I gave you this object to identify:

This type of bone can prove tricky to identify, and we often have queries about them on Ask A Biologist. With a large example like this one there will often be a suspicion that it comes from a human. 

However, this is in fact the humerus of a bird – the large flange at the proximal end (the bit nearest the body) makes it hard to spot the rounded point where it articulates with the scapula, coracoid and furcula bones that make up the shoulder joint. The flange itself provides a large attachment area for the tendons and muscle needed to power and control flight.

Here are some images of a (much smaller) goose humerus that show the general structure of the bone more clearly:

Once you’ve recognised the mystery object as the humerus of a bird, the length of about 45cm (17.7 inches) immediately narrows down the species it could come from.

Jack Ashby was the first to recognise what this humerus belonged to and he found support from Rachel, Carlos, Julie Doyle and initially Barbara Powell (although she later opted for another possibility). It’s the humerus of an   Continue reading →

Friday mystery object #129

This week’s mystery object is one that seems to perplex a lot of members of the public when they come across it, so I thought it might be a good test of your identification skills:

Any idea what this bone is and what it belonged to? You can put your suggestions, comments and questions below and I’ll try to respond during the day. Good luck!

Friday mystery object #128 answer

Happy New Year!

On Friday I gave you this piece of an animal to identify:

As expected, you managed to work out what it is in fairly short order.

Jake recognised it as skin, Denis Copilas as scales and Rhea as carapace – all of which are right at least in part. Henstridgesj and Barbara Powell’s friend Alison spotted that the section of carapace came from a Cowfish or Boxfish. There wasn’t really enough information available to identify it any further than that.

Fortunately this specimen had a label associated with it, so I can tell you that the section of carapace is from the  Continue reading →

Friday mystery object #128

This week I’m giving you a mystery object that I think will be fairly straightforward to identify, although it might take a few attempts to get the right species:

Let me know what you think in the comments box below – I’ll do my best to reply to any questions. Good luck!

Friday mystery object #126 answer

On Friday I gave you a bit of a tricky mystery object in the shape of this partial skull:

I wasn’t expecting anyone to get it without some clues, but I underestimated my talented audience!

Jake spotted that it was a mammal based on the ear morphology and then worked out what kind of animal based on clues from henstridgesj who suggested seal and Julie Doyle, who managed to not only identify the species, but drop this lovely cryptic clue to convey that information:

Not a lot to phocus on, but……. I’m harboring an idea about who it might be. Continue reading →

Friday mystery object #123 answer

On Friday I gave you a genuine mystery object from the Horniman’s collections:

It had been highlighted as potentially being human in origin, but it’s very short, despite being fully fused (therefore from an adult) and the condyles (the bumps that make the top of the knee) are too similar in size – humans have a bigger condyle on the inside of the knee.

However, the general shape is quite similar to a human femur – the depth and orientation of the condyles and the groove between them is all wrong for a quadrupedal animal and the femoral head and neck (the articulation at the top that goes into the hip) are at an angle and shape similar to that seem in humans.

There were some great observations and suggestions and I was pleased that henstridgesj managed to get the same identification as I finally decided on, with Matt King making a very similar suggestion. I think it’s the femur of a  Continue reading →

Friday mystery object #120 answer

As promised, last Friday’s mystery object turned out to be easy:

The very first reply by Gerry gave the correct species and every subsequent suggestion was for the same animal.

With those huge razor-like incisors and canines what could this be other than a  Continue reading →

Friday mystery object #118

This Friday I have a pretty straightforward mystery object for you. I was going to make it difficult by giving you an image of the specimen without the skull attached, but I am at a NatSCA meeting in Leeds today, so I probably won’t get much chance to provide clues during the day (although I will do my best).

So what is this the skeleton of?

As usual you can put your answers below (using clever clues if possible) – I will try my best to respond. Good luck!