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Hoooooooooooorrrrrrrrrrrraaaaaaayyyyyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here we are at last, into Adam's Silurian. Thanks for looking. First up is the Lower Silurian or Llandovery and I begin with a problem. I posted this one incorrectly in Adam's Ordovician as it had got it's label muddled up with an Ordovician Favosites I had that has vanished in the move here, but is being replaced by kind forum member @Herb Anyway, this, I remember now I've found the correct label, is from the greenish Browgill Formation, part of the Stockdale Group from a cutting near Skelgill (Skelghyll) in Cumbria, Northern England. It seems to be a tabulate coral, but I can't find any listed for this location, only mentions of small, rare, rugose corals. It has the star shaped corallites of a Heliolitidid, but seems to be tightly packed together like a Favositidid. A couple of species of Palaeofavosites seem to be close and are a bit star-shaped,, but anyone know any better? @TqB@piranha hmm who else? The coral bit, an external mold, is a maximum of 3.5 cm across and each corallite up to 2 mm.
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- ayrshire
- brachiopod
- brassfield farm
- browgill beds
- bryozoan
- calymene
- cenerville
- crinoid
- cumbria
- cystid
- cystiphyllum
- dalmanites
- dimerocrinites
- dudley
- eostrophodonta
- eostrophodonta mullochensis
- favositella
- favosites
- gastropod
- girvan
- graptolite
- hallopora
- heliolites
- horn coral
- howellella
- idwian
- inarticulate brachiopod
- kirkidium
- leptaena
- leptostophiidae
- leurocycloceras
- llandovery
- lower silurian
- ludlow
- malvern hills
- microsphaerirhynchus
- middle silurian
- monograptus
- nautiloid
- newlands
- ohio
- oriostoma
- orthid
- orthocerid
- palaeofavosites
- palaeofavosites mullochensosis
- palaeofavositinae
- pentamerus grits
- platyceras
- protochonetes
- resserella
- rhynchonellid
- rugose coral
- salopina
- schizotreta
- silurian
- skelghyll
- skelgill
- sphaerirhynchia
- spiriferid
- spoiler alert
- strophomenid
- tabulata
- tabulate coral
- telychian
- thecia
- trilobite
- tryplasma
- upper silurian
- wenlock
- wenlock limestone
- wenlock shale
- worcestershire
- wrens nest
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Hello again, here are another two fossils (or not) that I'm unable to place. They come from llandovery formation locality Hýskov from a shallow sea rich with trilobites, graptolites, brachiopods, bryozoans and crinoids. All other llandovery formation localities in Czech republic are deep sea shales with only graptolite fauna and very few brachiopod species. 1) Hýskov is very rich with beautiful graptolite fauna, like this dendroid Dictyonema graptolites. This fossil (if it is fossil) is preserved in a very much same way as the graptolites, while other fauna there is more plastic. 2) This one is probably a cephalopod of some sort, probably related to Cyrtoceras? However I can't see any segmentation. The white structures are probably only some sort of secondary minerals? Thanks in advance for your opinions Ondrej
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A few things from the Silurian (Llandovery) Cotton Formation near Forbes, NSW Australia. Most of these specimens are currently undescribed, but a paper will be released on them soon. One of my strophomenid brachiopods from the site will be in the paper, so I'll post it when it comes out, since they're a pain to photograph. The rare Aulacopleura pogsoni ....
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Paper describing A. pogsoni - https://www.researchgate.net/publication/236011643_Early_Silurian_Llandovery_trilobites_from_the_Cotton_Formation_near_Forbes_New_South_Wales_Australia
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Retiolitid graptolite, Pseudoplegmatograptus, Llandovery, Poland
TqB posted a topic in Member Collections
I was browsing some photos of monograptids for sale and noticed in the corner of one of them a ghostly patch with some faintly marked bristles . Thinking it was probably a retiolitid , I bought it and it arrived yesterday. So it turned out to be which was pleasing as they're very interesting and beautiful and I haven't found any in the field yet. After wading through a fair bit of literature, I think it's probably Pseudoplegmatograptus obesus (Lapworth 1877), or something close (graptolites being frustratingly impossible to ID for non-specialists). (Mrs. @Spongy Joe ?) From Zdanow, Bardzkie Mountains, Poland. Sold as Wenlockian but I believe that should probably be Telychian (Upper Llandovery). Really tricky to photograph, the light has to be just right or it's near invisible, as in the first photo... The next three are taken with near overhead light and some digital tweaking. Scale bar is 1cm.- 14 replies
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Hello friends and TFF family! Another little palaeozoic problem. This was given to me back in the mid 1980s and was said to be from the Pentamerus Grits of Newlands, Girvan, Ayrshire, Scotland. Brrrrrrrr!!!!!! I have it marked down only as "Cystoid?" and it may well be. The hexagonal patterned bit down the edge of the rock including the smooth shell like piece is 2.2 cm long. Bad picture. Here is a better close up. You can kind of see above that the hexagons are lying on the surface of the smooth bit, which i once thought was a bit of Pentamerus oblongatus but now think it may be some sort of inner layer of the fossil to which the hexagons are attached. Clearer below : Any ideas would be most welcome! @piranha @TqB
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One of a number of spiral monograptids from this period and a zone species, these have all been referred to Monograptus at various times as well as separate genera based on rhabdosome form which may not be of significant importance. It is bisected by an unidentified straight Monograptus. Reference for ID (as Monograptus spiralis): Elles & Wood 1901-1918, Monograph on British Graptolites, Pal. Soc. Monograph 33. (Plate XLVIII, fig. 7). Now generally referred to Oktavites Levina, 1928, e.g. in J. A. Zalasiewicz, L. Taylor et al 2009, Graptolites in British Stratigraphy, Geol Mag. 146, pp. 785-850. And here: http://fossiilid.info/9458
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