Nannotax - forum

So, the idea here is that we can use the commenting tools to discuss anything about the site or coccolithophores. If discussions get long we can split the page into different topics. If no-one says anything we may quietly remove the page.

However, we will read every comment posted here so feel free to use this for:

How to add comments

If you scroll down to the bottom of the page you will find a heading "Add Comment" and a form to fill in. To reply to a comment click the curvedarrow symbol below and to the right of it. The same layout is there on every taxon page. For a bit more advice you can see the guidelines.

Comments (49)

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Jeremy Young (London, UK)

Hi Mahani

Lovely to hear from you, it is always nice to know the website is being used in different ways and you are very welcome to share images from it. If you have any suggestions for how we can make it more useful please do let us know.

all the best

Jeremy

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Mahani Mohamed (Kuala Lumpur Malaysia)

Hi Jeremy

I m Mahani. I hope that you still remember me. I m now no more with Petronas. I am trying to educate the young biostratigrapher in nanno and foram. I share your fossil photos in my Instagram.

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Vladimir Musatov (Saratov, Russia)

Hi Jeremy.

There is a very important question - why the stratigraphic scale of the Paleogene on the Nannotax3 site does not correspond to the stratigraphic scale in the GTS-2020 book? What to take as a basis?

Thanks,

Vladimir

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Jeremy Young (London, UK)

Hi Vladimir

Good question - I do indeed need to update the site to use GTS2020. Doing so is a bit of a project though, and I have just not found the time to do it yet. For the most prt though the difference between GTS2020 and 2012 are small in our time interval - the big changes are in the Palaeozoic. Thank you for reminding me though, it is something Ineed to do.

all the best

Jeremy

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Mark (CA, US)

Superb, very nice information

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Raditya

Hi, are the photos of the nannofossil species on this site raw (pure from a microscope) or have a lot of noise (already processed)?

Thank you in advance.

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Jeremy Young (London, UK)

Hi the images come from many different sources and were taken on different types of microcope. ..but nannofossils are small (only a few microns) so they are difficult to image even with the best equipment.

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Tatiana Tsagaraki (Bergen, Norway)

Hello, Just been through the pictures on the webpage but can't find something that gets me closer to figuring out what this is. Any ideas?

Many thanks!

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Jeremy Young (Tonbridge, UK)

Tatiana

That is a fairly well known undescribed Syracosphaera species - it is on here as

Syracosphaera sp. A.

Those are lovely images, it is ok if I post them on the relevant page. I'll also put you in touch via email with someone who else who has some images and is describing the species.

Jeremy

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Tatiana Tsagaraki (Bergen, Norway)

Thank you, I missed those, sorry! It's fine to post the pictures yes, just for reference this sample was from 50m depth and taken between Madeira and the Gibraltar straights in May 2019

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Jeremy Young (Tonbridge, UK)

Thank you Tatiana

that is much appreciated - and i will look forward to see more results of your work.

Jeremy

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Karine Leblanc (Marseille, France)

dear all,

I have an identification quizz for you all. I found this in the subtropical Pacific Ocean (near Tonga volcano ridge) in a sediment trap moored at -170 m. It looks like calcite and was found in a sample with a large amount of coccolithophores (at least 25 different species). I was wondering whether this perfect ice cream cone could be a coccolith or something that you already stumbled upon ? Thanks a lot for your help ! Cheers.

https://drive.google.com/file/d/1GdlWxigAOg_paAHpNA-dkNWlkJQ16Acj/view?usp=sharing

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Jeremy Young (Tonbridge, UK)

Karine

That is definitely not a coccolith but it certainly is nice. I agree it looks calcareous and I suspect it might be the proloculus (first chamber) of a very small foram - it has both a terminal aperture and pores on the shell. There are some microfossil groups on facebok which might help with an identification.

Jeremy

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Karine Leblanc (Marseille, France)

Thanks for your response! I'll try to investigate on the foram side...Cheers

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Roque Aguado (Linares, Spain)

Hi,

I don't know if this was a mistake. I think the fourth (otherwise of excellent quality) picture placed under Hayesites irregularis (named KCooper-Rucinolithus irregularis.jpg) in the nannotax website probably is more compatible with the description of Hayesites albiensis. The specimen appering in this picture has a marked stellate and regular outline having only six long rays.

Cheers,

R. Aguado.

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Jeremy Young (Tonbridge, UK)

Hi Roque,

yes, you are right, in terms of the species concepts outlined here this specimen clearly ought to be in albiensis, I have transferred the image.

thanks Jeremy

NB If you are commenting on an image it is easiest if you add the comment on the bottom of the taxon page the image is on.

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Ian (Coventry, UK)

Hi

We're looking at samples of freshwater collected for us by school groups, we're actually looking for viruses under TEM but we as hard pellet ( 200K RCF ) after a 6 micron filter we get everything and we're pulling out a lot of what look like coccoliths. I can't find much information on fresh water species but we have structures resembling Palusphaera and others. Are there any resources about fresh water species?

cheers

Ian

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Jeremy Young (Tonbridge, UK)

Ian

Thanks for posting that image. Those are not coccoliths but non-calcified scales. Actually quite a few different protists use scales to form composite exoskeletons and these are variously formed of resistant organics, silica or calcite (coccoliths). I am not an expert on these groups but I think your images are of Paraphysomonas and if you do a google search on that it should get results. i would like to have more images of these sort of things in the non-coco section, so if you could send me some images that would be appreciated.

cheers Jeremy

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Ian (coventry, UK)

thanks! That's really useful information. I'll sort some images out for you - might take a while as we have around a thousand frames to go through. We also have map refs and some basic water quality info for each collection site. Drop me an email and I'll send them as zipped download links. The actual project is here - http://www.warwick.ac.uk/virushunters

cheers

Ian

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Chengxu Zhou (China)

Dear Professor Young,

I am working on several strains of the species of genus Pleurochrysis (I found the name has been changed to Chrysotila). These strains were isolated from aquaculture pool and bloomed in shrimp pools. The bloom did harm to the organisms. However, I am not quite sure what the exact name of the species is. Could I email you some of the SEM pictures and please help me to identify the species?

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Jeremy Young (Tonbridge, UK)

Dear Chengxu Zhou

Thank you for sending those images (I have unblocked the upload of them). I think they are, C. pseudoroscoffensis, but I am not an expert on this group of coccolithophores. You might like to try to contact Ian Probert of Roscoff Marine Lab in France.

Jeremy

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Chengxu Zhou

Dear Dr.Young,

Thank you very much for your reply. I will try to contact Dr.Probert.

Chengxu

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Chengxu Zhou

Dear Dr. Young,

Thank you very much!

Chengxu

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fatemeh (mashhad, Iran)

Dear Prof. J.Young

Is it possible to place about "ascidian spicules" or other calcareous nannofossil-liked forms in this site(especially for Jurassic system)?

Regards.

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Jeremy Young (Tonbridge, UK)

Hi there is some information on ascidian spicules in the "Other Groups" area - see this page http://http://www.mikrotax.org/Nannotax3/index.php?id=20011 - Jeremy

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Shaka (Oslo, Norway)

Hi,

I'd like to use one of the images of coccolithophores (File name: JRYSEM-207-21a.JPG) for my PhD thesis. Based on the provided info in the "citation&copy right" section of this website, I must ask for permission for the works with publication potential.

Could you grant me such a permission? and if your answer is affirmative, please send me the right reference detail for citation.

Many thanks,

Shaka

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Jeremy Young (Tonbridge, UK)

I have answered this directly, but for the record this use is fine. In vernal you should include attribution along the lines of image from nannotax website (www.mikrotax.org/Nannotax3 image JRYSEM-207-21a.JPG), if the image is being used to illustrate a taxonomic concept (as opposed to just as generic picture of a coccolith) then you should also check the filename and the image metadata (the text below the image when you click to enlarge it) and record the source of the image.

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Jeremy Young (UK)

June 2018 - upgrade of Neogene content.

Jim Bergen, Eric de Kaenel and colleagues published a set of five major papers on Neogene and Oligocene nannofossils at the end of 2017 in the JNR. These were based on a 15 year research project to develop the BP Neogene Stratigraphic Framework, integrating results from the Gulf of Mexico and Ceara Rise ODP site 154. This included revision of numerous species, > 1000 new high quality colour light micrographs, a wealth of new stratigraphic range data and description of ca 65 new species. This is the most important work on Neogene nannofossil for at least the last twenty years. Incorporating the results into Nannotax has required a major effort - and a lot of adjustment is still needed. The most affected parts are the sections on Discoaster, Helicospheara and Sphenolithus.

Please feel free to add comments - especially where you disagree with the species concepts or how they have been presented here. Jeremy

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Siti Umiyatun Choiriah (Yogyakarta, Indonesia)

Dear Prof. J.Young

I will conduct a study on the Paleoclimate Quaternary (Pleistocene-Holocene) Glacial-Interglacial at North East Java Basin, Indonesia.

But I am still confused. Is Climate Change at Quarternary can be recorded on the development and variation Nannoplankton Species?

What Nannoplankton species can be used for the cold Climate founders especially that developed in the Quaternary Period.

That is all and thank you

Umiyatun Choiriah

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Jeremy Young (UK)

Siti

This site is not really the place for this type of question - the coccoliths listserver would be a better choice. However, this is not a straightforward question. Nannofossils evolved fast in the Quaternary and as a result they are not as easy to use for paleoceanography as we might hope. There are exceptions, for instance Florisphaera profunda is an excellent paleoproductivity indicator, but you may not get very strong glacial-interglacial contrasts and should combine your data wiith other proxies.

Jeremy

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fatemeh (Mashhad, Iran)

Hi dear prof. Young

I'd like to know if it's possible to add another option for sorting genera and spices by image based on their lateral view too?

Regards.

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Jeremy Young (UK)

Fatemeh -we can't really do that but you can select for basic shape placolith vs murolith vs planolith, for forms with a spine, for high or low rims etc. The system is a bit compplex but if you experiemnt you should be able to do most types of search you want.

Jeremy

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