Search the Community
Showing results for tags 'Devonian'.
-
Together with Hapalocrinus frechi JAEKEL, 1895. Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 142: "Ophiurina and 'Eschenbachia' are the smallest ophiuroids of the Hunsrück Slate. The round disc is covered with a finely granular skin. The margin of the disc consists of 15 rod-like plates, of which every three of them are lying interradially. The marginals are connected to the second arm segment (personal information F. Hotchkiss, 2016). the vertebral halves are arranged in opposing pairs. The largest elements of the arm skeleton are the curved laterals, which bear a row of small spines of unequal length. They are orally touching across the midline of the arms. The five slender arms taper in their first halves evenly and the laterals become long slender rods towards the extremity of the arms" Identified by oilshale. References: Stürtz, B. (1890) Neuer Beitrag zur Kenntniss paläozoischer Seesterne. Palaeontographica 36:203-247. Südkamp, W. (2017) Life in the Devonian. Identification book Hunsrück Slate fossils. Verlag Dr. Friedrich Pfeil. München 2017. ISBN978-3-89937-221-2.
-
- 1
-
-
- bundenbach
- devonian
- (and 5 more)
-
Found in glacial drift in north western Maine. The rock type is a good match for Tarratine sandstone. Lower Devonian marine delta deposits. I've walked by this fossil so many times it's like an old friend. I had always assumed it to be a bivalve with weathered out pyrite crystals. It was exposed on a small gravel beach as I skied by this morning so I decided to give it a look. I think I have been wrong. What do you think ?
.thumb.JPG.d6901c6078e56d28e486d532e382a546.JPG)
.thumb.JPG.bc14248afc490a21a823450832b64e64.JPG)
-
I had some rock left over from a trip to Oklahoma a few years ago and finally decided to take a hammer to it to see if I could find anything and, well, I found this guy. Pretty sure it's a trilobite, just wondering about the species. Looks to my untrained eye to be a phacopid. Not sure about which one, or even the orientation inside the rock. Haragan formation. Any ideas?
-
-
-
From the album: Trilobites
Windom Shale Member Penn Dixie Site Hamburg, New York, USA© 2018 by Jay A. Wollin
-
I was exploring a canyon south of Globe, Arizona in the Mescal Mountains where I found two bones in the Devonian Martin Formation, (Frasnian Age, 372-383 mya). Do you agree that they are bones? If so, what type of bones from what creature? I see that the only vertebrates in existence were fish and possibly the earliest tetrapods. See table of Arizona vertebrate fossils found in: DAVID K. ELLIOTT and RONALD C. BLAKEY, “THE PRE-PERMIAN VERTEBRATE RECORD IN ARIZONA”, Heckert, A.B., and Lucas, S.G., eds., 2005, Vertebrate Paleontology in Arizona. New Mexico Museum of Natural History and Science Bulletin No. 29. 19 mm diameter US penney for scale. Photo P1020698 left side detail of Photo P1020702 Photo P1020702 I have several detailed photos of this one if needed. Photo P1020705 Second bone I found on top of same layer a few feet away. Same animal?
.jpg.c7323ffcbfd0330a71bb17f19bbba298.jpg)
.jpg.4824ff23c87dbee1329838e331dade15.jpg)
.jpg.0f8af7ff21d782928d88d80325989655.jpg)
-
Chiedo aiuto per classificazione. Marocco devoniano Cruziana ??
-
As it is a sunny day, this morning I decided to take a walk out back beyond my house to my little reliable spot of imported lower to mid Devonian fill. I wanted to see how much had weathered out since last season, and to try out a few more rocks that span from Bois Blanc Formation up through the Dundee Formation. As always, I was on the look-out for trilobites. The scene from near the base of the hills: The pit still has a bit too much snow to bother with, so I stuck with probing the hills and its gullies. A lot of the rocks were still frozen into the ground, so hammering a few out was necessary. A sure sign that spring is imminent. Here in southwestern Ontario, usually the first plants to come out (even before crocuses) is this dandelion mimic, Colt's Foot (Tussilago farfara). Only a few isolated clusters were appearing today, but by a week these hills and many other locations with scrabble will be full of these. (continued)
- 20 replies
-
- 1
-
-
- brachiopods
- devonian
- (and 2 more)
-
So I am trying to add a new trilobite to the collections. I have recently become the proud owner of a rather new and uncommon species of trilobite. It is presently listed as a Koneprusites sp. I don't come from the world of research academia, and am not particularly skilled at finding published papers pertaining to specific species. I am wondering if one of our trilobite experts could point me in the direction of some research materials and perhaps an author citation for the Koneprusites. Any info would be greatly appreciated. @piranha, perhaps you have some thoughts? Thank you all in advance!
-
Entry includes detail of eye lenses. One of the defining characteristics of this particular species, apart from the impressive eyes, is the convex nature of the anterior portion of the glabella.
-
From the album: Invertebrates
Mitrocystites styloideus DEHM, 1934 Early Devonian Emsian Hunsrueck Shale Bundenbach Grube Eschenbach Rhineland-Palatinate Germany -
Double on matrix
- 3 comments
-
- 1
-
-
- devonian
- djebel issimour
- (and 3 more)
-
Chotecops is the most abundant trilobite in the Hunsrück Slate and due to the excellent preservation, often soft tissue such as antennae and legs have been preserved as a thin sheet of pyrite.
- 1 comment
-
- 1
-
-
- bundenbach
- chotecops
- (and 2 more)
-
From the album: Trilobites
Hamar Laghdad Formation Djebel Issimour, Morocco -
Found in an unusual place in South Eastern New York. Great trip, ... more coming soon.
-
Location: SE Portage County, Central Wisconsin, USA. Geology: South Western advance of Green Bay Glacial Lobe. Former Glacial Lake Oshkosh. Niagara Escarpment Debris. My land. Ordovician onward. Trying to learn, but am confused. I tentatively identified the below specimen as a Honeycomb coral, based on info from the below and input from local “experts”. None are Paleontologists, but one is a Natural History Museum Director. Begin quote: Favositid tabulates: Honeycomb corals The favositid corals are quite common. They usually formed large colonies. The corallite is prismatic in shape, resembling honeycombs. Favositids have mural pores, tiny holes in the wall of the skeleton, which connect different corallites. These pores are distributed in characteristic patterns and numbers, which are useful for distinguishing the various types of favositids. Favositids lived from the Ordovician to the Permian, at which time they became extinct. They are most abundant in middle Silurian to lower Devonian rock. Favosites is the most common fossil coral in Wisconsin. https://wgnhs.uwex.edu/wisconsin-geology/fossils-of-wisconsin/coral-gallery/corals/ Wisconsin Geological and Natural History Survey, UW Extension The confusing part is that some surfaces of this specimen show no pattern or regular form. Just like most of my finds. Are there any clues to indicate a rock of this structure may be a coral? Other than cutting it open? I have about 50 like this, but only two others show the typical pattern. The rest just have the “circles” on all sides. All are basically the same composition of material, but colors vary. All have inclusions of crystals. My vision is limited, so I only know what I have found after I wash it and look under a lighted magnifier with a loop. Photographing helps a lot as well. I just go on shape and colors when picking up. Then use a small hand held magnifying glass to examine. Sometimes wash off with a little water first. My son in law, who has (almost) a geology minor from local University, is amazed at what the glaciers “dumped” on my land. Note that a large part of the classes were related to local fossils, due to the abundance of them. Please let me know if my ID is correct, and any pointers for identifying specimens which do not show the structure, only the “circles” or “cavities”. Thank you. 1 2 3 4 5 6 7
-
Taxonomy from Mindat.org. Together with the small brittlestar Ophiurina lymani. Description for the genus from Südkamp 2017, p. 106" The uniseral arms branch at least once above the second brachial. Proximally they bear pinnules on every second brachial. Beyond the seventh of these, a pinnule is attached to every brachial. Hapalocrinus has quadrangular or rectangular brachials. The anal tube is absent or incipient. The stem is slender. Some elements of the upper stem bear straight spines." Identified by oilshale. References: C. Bartels, M. Poschmann, T. Schindler & M. Wuttke (with contributions by H.-G. Mittmeyer) (2002) Palaeontology and palaeoecology of the Kaub Formation (Lower Emsian, Lower Devonian) at Bundenbach (Hunsrück, SW Germany). Metalla (Bochum) 9.2, p. 105-122. Südkamp, W. (2017) Life in the Devonian. Identification book Hunsrück Slate fossils. Verlag Dr. Friedrich Pfeil, München.
-
.JPG.6aab17748af2ec1ec4a94fa671052a40.JPG)
From the album: Lower Devonian
Acrospirifer arrectus (pedicle valve) Lower Devonian Glenerie Limestone Tristates Group Glenerie, NY. collected 3/18/18 -
First off, I apologize for the poor image quality... The pictures were taken quickly with my phone camera through a microscope. If anyone is interested I'll get out a proper camera later and try again. I found this while searching some Widder formation matrix collected in Arkona ontario. It is roughly 1 mm across. I am fairly certain the tooth belonged to a Xenacanth. Has anyone found these in the area before or did it migrate from somewhere else? Note: the tooth is smooth. The serrated look is caused by pixels in #2
-
Yesterday was chopping through some Dundee Fm (mid Devonian) limestone at a very thick brach/coral layer and found a few of these. The matrix where this is situated in this particular layer has abundant large brachs, gastropods, and large well defined coral colonies. I was just curious as to what sort of brach this may be... if it is one.
- 12 replies
-
- 1
-
-
- brachiopod
- devonian
- (and 1 more)
-
Hi all, During my trip to Resteigne, I namely found this coral. Here is the location info: Resteigne quarry, Belgium Jemelle Formation (mostly) Eifelian, middle Devonian; ~ 390 mya Any possibility to name the species do you think? Thanks in advance for your replies! Max
-
Hi all, During my trip to the quarry of Resteigne, I namely found this brachiopod. Is this a Sieberella sp (as proposed by Roger @Ludwigia)? Because the fact that it is asymmetrical makes me want to incline to bivalve... But I'm not sure what kind of bivalve it would be then. Location info: Resteigne quarry, Belgium Jemelle Formation (mostly) Eifelian, middle Devonian; ~ 390 mya Thanks in advance for your replies! Max
-
Hi everyone! So Friday morning, after a few enjoyable days of skiing in Switzerland with my dad, we decided to leave the village because the weather was really becoming horrible for any further skiing (especially for a beginner like me!). I had done a little bit of research as to what fossil locations we could visit on the way back home, and eventually Kevin @Manticocerasman very kindly pointed me towards the site of Resteigne in Belgium! A (no-longer in use) quarry known for its Devonian brachiopods, corals, crinoids and sometimes trilobites. Which was a fantastic opportunity for me, because in my so far 7 years of fossil hunting I had never been in a quarry or hunted for trilobites!!! So seizing the opportunity, we booked a Bed & Breakfast in the small village of Resteigne. We arrived late that evening after a long and annoying road, but luckily the hosts were still up and warmly welcomed us. The man knew quite some things about the great geology of the area, and told us that apparently this region was now a Geopark of the UNESCO! (To avoid any confusion, we are allowed to collect fossils here without any problems. It is not like the national parks where it is forbidden to take things out). He sometimes found some fossils himself when he was going out on walks. After a good night sleep and a delicious breakfast, we set out to the quarry.
- 35 replies
-
- 3
-
-
- belgium
- brachiopod
- (and 8 more)
-
From the album: Northern's inverts
.JPG.918a239615786b49a51a5a7a015b3d19.JPG)
.JPG.bc6bc2f672b5da4820ed100fbad4a51d.JPG)
.jpg.c7323ffcbfd0330a71bb17f19bbba298.jpg)
.jpg.4824ff23c87dbee1329838e331dade15.jpg)
.jpg.0f8af7ff21d782928d88d80325989655.jpg)
.thumb.JPG.d64a00de120fb553baacff5149461632.JPG)
.JPG.6aab17748af2ec1ec4a94fa671052a40.JPG)
.JPG.00fafcc286408fd68b9941e667409c6f.thumb.JPG.a77099762a230de6213ef883167386af.JPG)
