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Showing results for tags 'emsian'.
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The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these g
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- pentremitidea archiaci
- cordillera cantabrica
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I found this one together with some bivalves. Its an area where you can find fossils from the emsian era. Any ideas on what it is? Found it in Thanville, Belgium. Already a little known place for searching fossils from the devonian epoch.
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From the album: Lower Devonian fossils
Brachiopods Left: Rhynchonellida and Spiriferida Center: Athyrida Right: Terebtatulida and Atrypa reticularis Emsian Coladilla Fm. Cantabrian mountains Spain-
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- spain
- brachiopods
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Taxonomy from Fossilworks.org. Description of the genus by Südkamp 2017, p. 116: "The small cup is conical. The long slender arms are unbranched or may have a single isotomous division high above the cup. So, there are 7 - 10 arms present. Between the long, stout alternating ramules there are two brachials. The anal sac is large and elongate and consists of several vertical rows of small hexagonal plates." There are two species known: R. ramosissimus and R. lobatus. The difference is respectively in their round and similar, and pentagonal alternate, stems. The cup of R. lobatus is mo
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- emsian
- eschenbach
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All, I have got a strange looking osteostracan fish from Stjordalen Fm, Spitzbergen. It is Emsian. It is not identified but generally belongs to the elongated type of osteostarcan fish from that locality. As you can see it shows that a part of the exterior headshield layer is missing showing probably a viscelar/internal structures. Maybe it is an effect of predation or just a mechanical damage during formation of the fossil. Nevertheless, it is interesting. Pictures are not of the best quality but some internal structures seem to be visible. It is a strange looking one. Any co
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- agnathan
- spitzbergen
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Originally described under the name Urasterella verruculosa Lehmann 1957. Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 130: " The five, ribbon-like, flattened long arms join at the mouth frame; there is no interbrachial disc. The mouth frame is built as a ring of robust plates. The plates of the dorsal surface (radials,, a primary circlet and the large madreporite) are difficult to determine with certainity. Pedicellariae are irregularly arranged on the dorsal surface and as an organized fringe by the spacing of the adambulacrals. The pedicellariae are rounded triang
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- tff-oilshale-ec2729
- emsian
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Hello everyone, I recently received a lot of 3 brachiopods from Spain. Here they are with their original labels that they were listed with and that I received them with: The issue is that when I began to do a bit more research on these species, specifically Hexarhytis the paper that comes up shows and describes a completely different brachiopod. Looking up the other Athyrid the results I got were much closer but still not exactly like the brachiopod I have, but since I got more results for this search I could now do a bit of looking into the closely related taxa whic
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Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 139: " Furcaster is a very abundant ophiuroid with opposing fused ambulacrals. These vertebrae are elongate and wing-like. The five narrow arms are high and taper to whip-like extremities. Each ambulacral pair has a pronounced median dorsal oval cleft. The ambulacral plates are essentially flat and plastron-like orally (plastron is the lower shell of a turtle). The round small disc is granulated. The mouth frame is petaloid and the mouth-angle plates are sub-triangular in outline. The ambulacral groove is open. The laterals
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Originally described under the name Urasterella verruculosa Lehmann 1957. Unfortunately, the slate was sawed and formatted before the starfish was discovered. A saw kerf goes right through it. Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 130: " The five, ribbon-like, flattened long arms join at the mouth frame; there is no interbrachial disc. The mouth frame is built as a ring of robust plates. The plates of the dorsal surface (radials,, a primary circlet and the large madreporite) are difficult to determine with certainity. Pedicellariae are irregularly arra
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- verruculosa
- bdellacoma
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Taxonomy from Fossilworks.com. Description from Südkamp 2017, p 140:" Eospondylus is related to Furcaster, especially for its ambulacrals fused into vertebrae, their form, their deep median dorsal cleft and the open groove. The circular disc incorporates only two arm vertebrae and bears small scale-like plates. The five long arms are about as high as wide. They can bend extremely, up to 180° involving seven segments. The laterals have a vertical spine ridge bearing a row of long spines of unequal length. The laterals on the oral surface are more conspicuous, somewhat pear shaped and bear
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This ichnofossil consists of an accumulation of tentaculites, probably of the genus Styliolina. Dr. M. Poschmann (General Directory of Cultural Heritage Rhineland-Palatinate in Koblenz) mentioned in a personal communication that accumulations of tentaculites / styliolites from the Hunsrück Slate are known, also in the State Collection in Mainz such pieces are found. Tentaculite accumulations can occur in quite different forms, among them those which are probably to be interpreted as coprolites due to their shape and rather irregular arrangement. Cylindrical assemblages of tentaculites /
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- tff-oilshale-an2177
- living tube
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Cheiropteraster giganteus reached diameters up to 50 cm / 20”. Taxonomy from BioLib.cz. From Südcamp 2017, p. 132: “Cheiropteraster is a very large ophiuroid with no disc, but a granulated skin reaching the tips of the five arms. The mouth is extremely large and V-shaped reaching up to the fifth ambulacral pairs. The elongated ambulacrals stand out as a topographic high and form alternating half-cylinders. Orally, they are boot-shaped. The laterals are T-shaped and bear long spines along the edge.” Identified by oilshale using Südcamp 2017. References: Stürtz, B. (1890) Neuer B
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- kaub formation
- cheiropteraster
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This rare Palaeosolaster lies somewhat unfortunate on its side and is not completely preserved. A conularia is partially hidden by the arms. Taxonomy from Fossilworks.org. Synonyms: Echinasterias Stürtz 1899, Echinodiscaster Stürtz 1899, Echinodiscites Stürtz 1899, Echinodiscus Stürtz 1899, Echinostella Stürtz 1899. From Südcamp 2017, p. 124: “Palaeosolaster is similar to Palasterina, but can be distinguished easily by its 25-29 arms and large mouth. The mouth-angle plates are narrow and show high relief. The madreporite lies on the oral surface. The groove is wide. The opposite
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- devonian
- bundenbach
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Eriniceaster tenuispinosus Lehmann 1957 is a homotypic synonym of Erinaceaster tenuispinosus Lehmann 1957 Taxonomy from GBIF.org From Südcamp 2017, p. 127: "The disc and arms on the dorsal surface are covered with a distended, granular, spine bearing skin. The spines are elongate and needle-like. The high domed body has been transformed into a fringe around the five lancet-shaped arms by later flattening. The mouth frame is large and stellate and the mouth-angle plates are triangular. The small madreporite has an oral position. The ambulacrals are either opposite or alternating and
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- kaub formation
- erinaceaster
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From the album: Sketches
The original comes from the Early Devonian Emsian deposits in the Moroccan Anti-Atlas.-
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- emsian
- mesocristatus
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From the album: Sketches
Original from the Early Devonian Emsian deposits at Erfoud, Morocco.-
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- elegans
- scyphocrinus
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Roofing slate mining in Bundenbach (Eschenbach-Bocksberg mine) was discontinued in 1999. Taxonomy according to Fossilworks. Diagnosis in Südkamp, 2011: "The large, bowl-shaped cup is composed of three low infrabasals and two uninterrupted circlets of large, five-sided basals and radials. The angustary radial facets are horseshoe-shaped. The basals and radials have a striated surface sculpture (hexagonal concentric lines). The uniserial arms branch isotomously on primibrach three normally and heterotomously higher in the crown. The secundi- and tertibrachs have thorn-shaped plates aboral
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- kaub formation
- codiacrinus
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From the album: Trilobites
6cm. long Upper Emsian Early Devonian From the Anti-Atlas in Morocco -
I just acquired this trilobite over an internet auction house. The seller could give me absolutely no information about it, but I'm pretty sure that this is a Hollardops mesocristata from the late Emsian, Middle Devon. I would just like to ask the experts here on this subject if I am correct in my assumption and if they perhaps might be able to suggest its provenance. It's 6cm. long.
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- morocco
- hollardops
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Hi everybody! Today i want to kindly ask you help for the correct ID of this trilobite. My choice is Morocops ovatus but obviously i prefer to listen the ideas of experts (@piranha @Kane @Tidgy's Dad and more). I'm thankful to everyone who want to participate at the topic Here are the info: Origin: Jbel Zguilma (Foum Zguid), near Alnif, Morocco Age: Emsian, Devonian Lenght: 5.5 cm / 2.16 inches The trilobite is not in my hands, the photos are from the seller. Thanks and have a wonderful weekend!
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Alternative names: Mitrocystites styloideus or Dalejocystis styloideus. Taxonomy from Mindat.org. Description (Südkamp 2017, p. 98): "The theca is roughly semicircular. It consists of two large thin plates on the oral surface, which nearly completely overlap the dorsal surface. The margin in the neighbourhood of the aulacophore is sometimes arcuate and bears medially the slender insertion of the aulacophore. Next to it, on the oral surface, short transverse riblets can be seen, which are directed to the aulacophore. The lateral margins of the dorsal surface bear a row of knots. The e
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Taxonomy according to Fossilworks.org. Characteristics of the genus according to Südkamp 2017, p. 110: “The cup is cone-shaped. The arms are very long, unbranched and without pinnules. They consist of elongate elements. The anal sac is arm-like. The round stem consists of low elements proximally.” T. elongatus is characterized by arms that can be more than 20 times the height of the cup. Identified by oilshale using Südkamp 2017. References: Follmann, O. (1887) Unterdevonische Crinoiden. Verhandlungen des Vereins Rheinland, xliv 1887: pp. 113-138. Südkamp, W. (201
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- devon
- triacrinus
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From the album: Invertebrates
Ivoites sp. Early Devonian Emsian (early) Bundenbach Rhineland-Palatinate Germany -
Together with the brittle star Furcaster decheni STUERTZ, 1886. Palaeoisopus was one of the largest predators of this fauna with a length of up to 25 cm and a maximum diameter of about 40 cm with spread legs. This is a (slightly disarticulated) juvenile specimen. Line drawing from Lehman 1959, p. 102: References: Walter Maximilian Lehmann (1959) Neue Entdeckungen an Palaeoisopus. Paläontologische Zeitschrift 33: 1/2, 96-108. doi:10.1007/BF02988981 Jan Bergström, Wilhelm Stürmer, Gerhard Winter (1980) Palaeoisopus, Palaeopantopus and Palaeothea, pycnogonid arthr
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- kaub formation
- palaeoisopus
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References: K. De Baets, C. Klug, D. Korn, C. Bartels, and M. Poschmann (2013). Emsian Ammonoidea and the age of the Hunsrück Slate (Rhenish Mountains, Western Germany). Palaeontographica Abteilung A 299:1-113.
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- tff-oilshale-mo2128
- ivoites
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