A specimen with no data is not worth keeping. A specimen with vague data is not worth keeping either. The Royal BC Museum’s ichthyology collection contains a vertebral centrum with cartilaginous remnants of its respective haemal arch and neural arch from a shark that washed up November 5th, 1975 (only a few months after Jaws was released in cinemas). It was cataloged as 976-00052-001 in the fish collection (with a variant of the catalog number listed as a previous number ~ B.C.P.M. #97652). Our electronic database only had a collection date for this centrum (no location, no collector).
Flip to our original paper catalog, and we find that there is indeed a collection location: Ahousaht Village, Flores Island – but this never got translated to our electronic database. The paper catalog states that the shark washed up on a beach – but there was no latitude and longitude provided for the record beyond 49°N, 125°W. If you plot the western-most limit of 125°W, it is nowhere near Flores Island – so the location is questionable. Ahousaht Village’s nearest beach is at about 49°16’N, 126°03’W.
Worse yet, the vertebral centrum indicates that this was a big shark – we don’t have a lot of big sharks here…
Great White Shark (Carcharodon carcharias) reaches 6 meters
Pacific Sleeper Shark (Somniosus pacificus) reaches 5-6 meters
Basking Shark (Cetorhinus maximus) reaches at least 9 meters
The shark centrum in the Royal BC Museum collection is about 7.3 cm in diameter – it spans most of the palm of my hand. This must have come from a decent-sized shark. Was it a small Basking Shark? A large Great White? A large Sleeper Shark? It’s not ‘reptilian’ so we can rule out Cadborosaurus (whew). Hang on, Cadborosaurus’ so-called “type specimen” was a photograph of a digested basking shark – Hmmm…
It is a shame no one bothered to take a skin sample – the scales may have been diagnostic. What about teeth? A sample of teeth – even one tooth – would have been enough to identify this fish. Sadly though, nothing remains other than this centrum and a bit of cartilage. It was fixed in formaldehyde and stored in isopropanol – so I think we can forget sending a chunk to Guelph for DNA barcoding. DNA barcoding wasn’t a thing back in 1975, so tissue samples were not preserved for future analysis.
If no one in Ahousaht has a photo of this shark on the beach, or some teeth stashed away, all I have to say is , “Sorry Charlie, the Royal BC Museum wants specimens with good data.”