Skip navigation

Fossil Fish blog

2 Posts tagged with the fossil tag
0

It has been a while since I last posted about our Moroccan adventure last year, (please excuse me) I've been rather busy in the collections and hosting students and researchers. I will bring you up to speed with some of that in later blogs!

 

Back to Morocco! We had been in Morocco for several days now and were loving every minute of it. Myself and Zoe will both be blogging about our trip to Goulmima as we both had strong interests in the area and the fauna. See Zoe's blog for her view of the day!

 

The day started off by looking around a fossil and mineral shop/museum which was attached to the hotel where we were staying. They had lots of great things and some great casts, if only I had enough room at home to have a Triceratops skull in my living room!

 

Tri SKull.jpg

Triceratops skull (reconstruction).

 

fishshop.jpg

Some fish from Morocco available to buy in the fossil shop.

 

After we had left the museum we were on the road again. Everyday we were travelling to different localities and seeing something new. It was great to see so much of the Moroccan landscape, it was amazing. The geology and landscapes which we were driving through changed everyday.

Me &Zoe Goul.jpg

Myself and Zoe ready for the day ahead!

 

Drive1Goul.jpg

Driving to Goulmima.

 

Drive2Goul.jpg

Just one of the many pictures I have of the Moroccan landscape.

 

Zoe was definitely the most excited about the trip to Goulmima as you get lovely ammonites from there. I was also interested in going there as amongst the ammonites you get fish in calcareous nodules and I knew we had nothing from that area in the collections so I was intrigued to find out more about the site and what we could find.


We stopped at a few sites on our drive but we didn't find any vertebrate material. Our team found some invertebrate material, bits of shells and ammonites, so after a while we moved onto another site.

 

Me Asfla1.jpg

Me at the Asfla 1 site. It was a steep climb to the top of the hill behind me!

 

The next site, Asfla 2, proved to be more fruitful. We discovered partial pieces of ammonite and Plesiosaur bones, but still no fish. Althought they were only scrappy bits of Plesiosaur we still collected them as they will be useful in the handling collections and in the Angela Marmont Centre (where you can bring fossils to have them identified) in the Museum.

 

Mark Asfla2.jpg

Mark at Asfla 2 site, trying to sniff out some Plesiosaurs!

 

Our last stop was a village settlement where most of the residents make a living out of fossil hunting, particularly from Goulmima. The rocks here are Cretaceous in age - about 90 million years old. Here were were taken by our local guide and shown some amazing specimens. What particularly caught the eye of TEAM FISH were the famous fish in nodules to be found in Goulmima!

 

These fish are called Goulmimichthys and are part of the class of fish commonly known as ray-finned fish (you can still find ray-finned fish swimming in the seas today e.g. cod). These fish are elongate and had numerous small spiny teeth. Some of the specimens we saw even had some soft tissue preservation, which is amazing. It is very rare you get soft tissue (muscles, skin etc.) fossilised, as it is usually eaten by predators or rots away very quickly after the animal dies.

 

Goulmimichthys looks very similar to fish (Rhacolepis in particular) that are found in the Santana Formation in Brazil. There has not been a huge amount of research done on Goulmimichthys and because we do not have any fish material from that area in Morocco in the collection we decided to purchase all of the specimens that` you can see in the picture below. The other flatter fish you can see are Ichthyodectes, which had a large mouth with pointed teeth. It was a fast swimming predator at this time.


I am actually going to start doing a research project on these fish which I am quite excited about. We are going to have the specimens CT scanned. This is a powerful machine which allows us to look inside the nodules (similar to an x-ray) instead of cutting the nodules (and the fossil) in half. I have not done this before so I am looking forward to learning new skills. Hopefully by doing this we can better understand how Goulmimichthys relates to other fish like Rhacolepis  from Brazil.

 

morocco-resize-feb14.jpgTEAM FISH: David Ward, Martha Richter, Zerina Johanson and myself.


morocco-resize2-feb14.jpg

Fossil fish mostly in nodules collected from Goulmima. This picture does not do them justice, they are more beautiful when you see them for real!

 

We did very well visiting the local collectors and seeing what they had. We gained many new specimens for the Museum's collections and made some good contacts with the local collectors.

 

From here we headed to our next hotel and packaged up our specimens to be shipped back to the UK.

 

My next blog about Morocco will be a guest one from our ore curator who was with us talking about pretty pink minerals!

0

On our second day in Morocco we had to pack our cases as we would be staying in a different hotel that night. Our team would also be splitting up to cover as many different sites and areas of interest as we could.

 

Desert driving

 

Our adventure to the first site was not without drama. We had three vehicles travelling in a convoy (I likened it to something from Top Gear - three Land Cruisers, traveling over amazing desert landscapes and each with its own personality) and an hour into our journey I had started to doze off. The next thing I knew I could smell burning - we had pulled up at the side of the road and were told to get out of the car immediately. It turned out our brakes had overheated and fused together.

 

There was a strong burning smell and some smoke. It wasn't anything major, but did mean we had to go down to two cars. All the luggage was transferred to the roof and seats put up in the boot and off we went again. It was a slightly more bumpy ride in the boot but all good fun. The adventures of an earth scientist!

 

On the way, we stopped to look at some monkeys in Cedar Forest, it was along a touristy trail so they were fairly tame and would steal your food if you gave them the chance. Many had infants attached to them, which were cute.

 

monkey.jpg

Monkey eating some bread in Cedar Forest.

 

Finally we reached the first stop,  an extinct volcano site where analytical chemist Emma Humphreys-Williams wanted to collect some mantle xenoliths for her research. Mantle xenoliths are fragments of rock from depths of up to 50km, brought to Earth's surface through volcanism. We all got out the vehicles and spent a little time walking over the site looking at the volcanic rocks, which for me meant thinking back to my undergraduate degree in geology.

 

There were some lovely lava flows and volcanic tuff (basically consolidated volcanic ash). The xenoliths that we were looking for were a lovely green colour. My team were only there for about half an hour as most of the palaeontologists went onto Bakrit to look for more shark teeth. However, Emma HW, Zoe, Mark and Helena spent the day here. To find out more about what Emma and others did, check out the Brachiopod and Cephalopod collections blog!

 

VolcanoResized1.jpg

Arriving at the volcano site, I thought it looked like something out of a Star Trek film.

 

After another hour's drive with quite a bit of bumpy off-roading (which I found quite fun) we reached our next site at Bakrit. Late Maastrichtian in age (last part of the Cretaceous period, about 70 million years ago) and an area rich in black organic deep water phosphate deposits. This is overlain by shallow-water limestone of unknown age (but is something we are working to determine) containing a diverse molluscan assemblage.

 

Searching for shark teeth

 

Bakrit is a site that both Charlie and David were very keen to look at as both had collected shark teeth from there before and wanted to add to their knowledge and increase diversity of the Museums collections. Again this site was great for just walking along and finding lots of shark teeth sticking out of the surface. Some of the most common shark teeth we found were Cretolamna and Squalicorax which belong to the same family as the Great White shark (Carcharodon carcharias).

 

BakritPeople.jpg

At Bakrit walking up the exposure looking for shark teeth.

 

BakritSed.jpg

The very small lighter/whiter bits were small (0.5-1cm)  shark teeth, Zerina is looking for some.

 

Bakrit Sharks.jpg

A small number of the shark teeth we found. The scale is 1cm.

 

After an hour or so at the site, where we took measurements and GPS co-ordinates for all the material we collected, we were back in the vehicles and back on the bumpy road to meet our other colleagues who had been at the mine for the afternoon. Then we made our way to our accommodation in Midelt.

 

Charlie currently has all the shark teeth and is working to identify them all. They will then be marked up and put into the collections in the Museum for people to research and use. It's likely that a couple of scientific papers will be published about the site at Bakrit and the fossils found there over the next year or so.

 

Keep checking back here for more updates about our trip and visit Zoe's blog to see what others got up to in the field!