Can anyone help us identify these vertebrae? Thanks!
Thanks John. Any idea on the type (or at least size) of fish? Much appreciated (my ten year old daughter is very anxiously awaiting this information!). Thanks again.
Looking at the size of the pencil the vertebrae in the middle is 5.5x as wide as the pencil. My pencil is 7mm that makes the vertebrae 38.5mm, and that is very large. I don't seem to be able to find any sizes for fish vertebrae on the web and I don't have any I can measure. If you have a local fish market you could take a ruler and measure some vertebrae yourself to give you an idea of the size of fish these came from.
I have found this scientific study comparing vertebrae size with fish size.
A vertebrae of 38.5mm would give an approximate fish size of between 2 and 2.5m. There are a huge number of ifs and buts applying this study to an unidentified vertebrae but it gives you a ball park figure.
Brilliant John! Many thanks!! Based on the size estimate (between 2 and 2.5m), location (Costa Rica) and time of year (August), my guess would be either a sailfish or marlin (although it could also be tuna or a roosterfish). Thanks again!