Search the Community
Showing results for tags 'arachnid'.
-
Hi group! What is your opinion? I bring you this rarity, which seems to be divided into segments, something I had never seen around here until now in my Carboniferous area. It reminds me slightly of an arthropod, maybe it could even resemble an arachnid. Or maybe they are just plant remains! Note that there are some sort of indentations in some of the fossil segments and there is an area (vaguely reminiscent of an abdomen) that is oval. It comes from the Upper Carboniferous Estephanian B (Saberien) of León, Spain. Alethopteris zeilleri megafloral zone. Thanks you!!!
-
The last (for now) addition to my fossil collection consists of three amber pieces from Baltic and East Europe. They're dated to Eocene.
-
Mazon Creek Best Of The Best Geralinara Carbonaria Scudder, 1884
RCFossils posted a topic in Member Collections
This is a creature that many collectors are not even aware exists in the Mazon Creek Deposit. This unusual animal is commonly known as a whip scorpion. While it is an arachnid and resembles a scorpion , it belongs to a district order called Uropygids. Whip scorpion are incredibly rare in the fossil record. A handful have been described with the earliest known specimens dating back to the Devonian. Any arachnids in the Mazon Creek deposits are considered a rarity. In a faunal study that I referenced in an earlier post, out of 230,000 concretions collected at Pit 11, nine arachnids were found. Uropygids have been estimated to make up approximately 3% of the arachnids found in the Mazon Creek deposit deposit (do the math)! Modern whip scorpions are non venomous and feed on insects, scorpions and in some cases lizards. The long whip like tail helps to detect vibrations. Modern whip scorpion do have an interesting defense weapon. When disturbed, they can spray a solution primarily consisting of acetic acid to thwart off predators. This amazing specimen was found at Pit 11 on May 3rd 1981. The gentleman who collected it, brought it to the Field Museum and had Dr Eugene Richardson study and prep it. Richardson stated that it was the best example that he had ever seen. It was identified by Dr Richardson as Prothelyphonus giganteus. Geralinura and Prothelyphonus are the only 2 Uropygids described from the Mazon Creek Deposit. I am not certain which species it is and really need an arachnid expert to look at it.- 11 replies
-
- 10
-
- arachnid
- mazon creek
-
(and 2 more)
Tagged with:
-
I found this in South Yorkshire, UK today in the coal measures (upper Carboniferous). I suspect it may be an arachnid though I am not sure. Please can anyone confirm if it is or isn’t an arachnid? Plant fossils are abundant at the site where this was found. Thanks, Daniel
- 7 replies
-
- arachnid
- carboniferous
-
(and 1 more)
Tagged with:
-
I found this in West Yorkshire, UK recently in coal mining waste from the Pennine Lower Coal Measures formation (Westphalian A, upper Carboniferous). On the rock, there are several plant fossils such as Neuropteris leaves, but also this fossil. I am unsure whether this is the abdomen of an arachnid or insect, or just a plant fossil. On one part of the fossil, there is what seems to be a faint imprint of a Neuropteris leaf. However, this imprint seems to be from a different fossil which formed on top of the possible arachnid/insect. Do you think this is indeed an arachnid/insect fossil or just a plant fragment? Thanks, Daniel
- 8 replies
-
- arachnid
- carboniferous
-
(and 2 more)
Tagged with:
-
All, My son found this orb-weaver spider at the Florissant Fossil Quarry in Colorado last month. It's about 1.5" (4cm) between the tips of the longest legs. There are short thorns on the abdomen, and possibly on the bases of the legs as well. Overall, it's very much like the golden orb-weavers whose webs I have the occasional misfortune of walking into in my garden. Can anybody tell me what genus, or perhaps even species this may be?
-
The amber from Myanmar is full of amazing fossils https://phys.org/news/2018-02-remarkable-spider-tail-amber-million.html
-
More Florissant Insects/spiders Found This Weekend
StevenJD posted a topic in General Fossil Discussion