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When Ain’t An Anaconda An Anaconda?

By Mark Carnall, on 3 January 2013

Image of the Grant Museum 'Anaconda skeleton'Apologies for the use of the awful contraction ‘ain’t’ but the International Standards for Science Communication (ISSC) demand awful alliteration at almost all opportunities.

If you are reading this post then it is possible that you know of the Grant Museum and if you’ve visited then you’ve no doubt been impressed by our rather lovely articulated anaconda skeleton pictured here on the left. It’s a beautiful skeleton that grabs the attention and brings to mind questions like “How many ribs?” and “Who had the job of putting together what is surely one of the world’s most difficult jigsaws?”. It’s one of the specimens we list in our top ten objects you must see on a fleeting visit, it features in Kingdom in A Cabinet our guide to the Grant Museum and an image of this specimen was chosen for our postcard selection (available now from the Grant Museum).

Also, it umm, isn’t actually an anaconda…

A fact which other, lesser, museums might try to cover up or be very embarrassed about but we see this recent discovery as an opportunity to explain a bit about how zoology museums and science work. Plus, we are only mildly embarrassed about one of our highlight specimens on display being clearly misidentified for over 50 years.

This misidentification came to light when a member of the public spotted, literally in this case, that the image of this specimen before it was skeletonised over on the top ten object page clearly wasn’t spotted the way that anacondas are and that the skin patternation looked very much like an African rock python (Python sebae) rather than an anaconda (Eunectes murinus). This specimen is one of the few specimens that we have a good historical record of and I don’t think there’s a member of staff who hasn’t seen the photos of this specimen before preparation, however until now nobody has ever noticed that this alleged anaconda didn’t look very anaconda like with its clothes on. What I mean to say in modern parlance is that we’ve successfully crowd-sourced the identification of this particular specimen.

UCL Zoology department staff sat astride the 'anaconda'

The current staff never sought to question the identification of this specimen so I tracked down some of our former staff to try to find out exactly when this specimen became an anaconda. This specimen came to UCL from London Zoo in the 1960s and we have photographs of it on the roof of the Medawar building before it was prepped. The picture above shows former museum curator Roy Mahoney and technicians John Ferguson, Ed Perry and Michael Lawrence sitting astride the specimen. In the end I contacted four generations of museum staff asking about the specimen, all of whom said that it had always been identified as an anaconda. Eventually I received an email from Roy Mahoney himself who remembered clearly that the specimen came from the London Zoo prosectorium identified as an anaconda and that the specimen in the photos is the skeleton that is now on display in the museum. There was a remote possibility that this photo doesn’t match the specimen but this was cleared up by Roy. I’ve now contacted the Curator of Herpetology at London Zoo to determine if this poor animal lived it’s whole life in London as an anaconda in African rock python clothing. Another possibility is that this specimen may be a weird hybrid, however, this seems unlikely as the patternation of the skin so closely resembles the python and the skull is clearly not an anaconda skull.

How has it happened that this specimen has been wrongly identified on display, used in teaching and used in research for so long under the wrong name? Well normally we treat every previous identification of specimens in the Grant Museum with a pinch of salt. Classifications of organisms are dynamic and so it is hard to keep on top of over 100 years of changing names for all 68,000 of our specimens. Some animals are constantly getting renamed, even the ubiquitous domestic cat has gone through four or five name changes in the last hundred years for example and I for one don’t have the time to run around relabeling every specimen every time a new name takes priority. Furthermore, there was a tendency in the 19th Century for gentlemen scientists to work from memory and understandably without the internet to quickly double check, a lot of spelling errors and other accidental errors creep into the labels- murina, murinae or murinatus instead of murinus for example. Such errors can mean that important specimens are overlooked. Another problem is that sometimes species, genera and even families can hover between two positions in a classification neither being in a majority consensus.

In this instance though none of these are appropriate solutions to account for our ‘anaconda’. There was a not-particularly-scientific trust in the received wisdom, a trust which is normally well founded, but unfortunately has resulted in us misleading our visitors. Mistakes do happen and rarely a month goes by without a discovery or rediscovery in a museum as the result of research and this happens at the Grant Museum too as our I Found This exhibition highlighted. Within science, re-identifications and changing theories are all part of the process within the dynamic discipline and rarely do museums lie on purpose. However, in today’s society with the rapid spread of information, correcting mistakes can be hard. In the past all we would have had to do was change the database entry, publications (feel free to pick up our now limited edition misprinted anaconda book and postcards) and label for this specimen. These days however our anaconda will be remain an anaconda in the far reaches of the internet that are beyond our control including Hungarian wikipedia, Flickr and blogs all over the web.

10 Responses to “When Ain’t An Anaconda An Anaconda?”

  • 1
    Daniel wrote on 3 January 2013:

    In that case, should I demand a new adoption certificate? ;o)

    (Only joking – no need really.)

  • 2
    Daniel wrote on 3 January 2013:

    Also does that change what we judge the sex of the specimen to be? I always understood that anacondas were sexually dimorphic with the males being substantially smaller, but do African rock pythons exhibit a similar level of size difference? Do we indeed actually know the sex of the specimen from the records of the zoo?

  • 3
    Marc Jones wrote on 3 April 2014:

    Mark, does this article refer to specimen LDUCZ x.456. the one which I have a drawing of on my UCL webpage:
    I confess I never double checked the identity but now you mention it the maxilla and quadrate do look more like those of a python!

  • 4
    Mark Carnall wrote on 3 April 2014:

    Yes Marc, that’s the one. The web of lies continues! I’ve yet to receive a reply from the zoo about for how long this skeleton has been posing as an anaconda!

  • 5
    On the Origin of Our Specimens: The Mahoney Years | UCL UCL Museums & Collections Blog wrote on 10 April 2014:

    […] The ‘anaconda’ in this image has been a recent source of much debate. The specimen was on display in London Zoo until it died in the 1960s at which point Mahoney received a phone call from the zoo asking if he wanted it for the Museum. Mahoney agreed and the specimen was taken to the roof of the Medawar building to be prepped for display. Mahoney recalled that he would have liked to have kept the skin, but the snake arrived in a bit of a sorry state and so it had to be discarded. In order to deal with the huge size of the animal, the snake was cut into pieces and Mahoney and his technicians (shown here on the right) had a section each to prep. The specimen is still on display at the Museum over 50 years later and is one of our top ten specimens. The debate that I referred to is over the actual identification of the snake as it seems that, despite Mahoney recalling being told that it was an anaconda, it is actually more likely to be a rock python. The intriguing mystery surrounding this specimen is outlined here. […]

  • 6
    From the Archives: A Camel Head from London Zoo | UCL UCL Museums & Collections Blog wrote on 8 October 2014:

    […] specimen was probably prepared in maceration tanks that used to be on the roof of UCL and where our not-an-anaconda specimen was prepared […]

  • 7
    UCL students identify mystery specimens in the Grant Museum | UCL Museums & Collections Blog wrote on 2 February 2016:

    […] from New Zealand (that is in fact not a lizard)). And couple of years back, a visitor noticed that our famous anaconda skeleton was in fact an African rock python. Some museums might be embarrassed by the idea that some of their objects have been mis-identified, […]

  • 8
    Underwhelming Fossil Fish of the Month November 2016 | UCL Museums & Collections Blog wrote on 30 November 2016:

    […] palaeontologists like to call un mystère which is French for je ne sais pas ce que c’est. According to the ever-reliable label information this specimen has only been identified as ‘leptolepididae’: it is an unknown species […]

  • 9
    Underwhelming Fossil Fish of the Month February 2017 | UCL Museums & Collections Blog wrote on 1 March 2017:

    […] be fooled by this fossil’s resemblance to a burned pastie, it is a fossil. According to the ever-reliable museum label, this is a tooth plate fossil of Sagenodus sp. from the ‘coal measures’. Here’s […]

  • 10
    Documenting Cephalopods Part 1 It Started With A Spreadsheet | Fistful Of Cinctans wrote on 7 September 2017:

    […] Collector Quite simply, who collected the thing. At this stage this is another grab bag of associated names as it often isn’t clear from one line labels if a person listed on a label was the donor, preparator, collector or identifier. In the absence of better data, a name associated with a specimen can be used to secondarily infer date ranges, assuming of course you’ve got the right Joe Bloggs or that the specimen hasn’t been mislabelled. Which happens. […]

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