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Showing results for tags 'chimaera'.
Found 11 results
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From the album: Ozan Formation
Ischyodus sp., NSR Campanian, Cretaceous Mar, 2023 Not a common find for the NSR. -
Anyone know anything about Californian Helicoprion fossils? I know they’ve been found in Eastern California, but that’s about it and I’d like to learn more.
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Von Mayer originally described this chimaera under the name Ischyodus avitus. Elasmodectes avitus, a cartilaginous fish, is conspicuous for its sparsely ossified skeleton. There is a nuchal spine behind the head; the dorsal fin begins just behind the nuchal spine and extends to the tail. Elasmodectes seems to have possessed a skin or only very thin scales, which seems to be almost impossible to preserve. The Skull is presenting its dosal view. Reverence: WOODWARD, A.S. (1891) Catalogue of the fossil fishes in the British Museum (Natural History). Part II. containi
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I recently found this 9mm by 7mm specimen in matrix from the Eocene Nanjemoy Formatiion of Virginia. I think it is a piece of a Chimaera tooth plate. However, in collecting the Nanjemoy Formation in Virginia for over twenty years I have never found a Chimaera tooth plate or a fragment of one. For that reason I don't want to rule out a coral fragment. However, I haven't found a piece of coral in this formation before either. For comparison, a Chimaera tooth plate (25mm by 16mm) from the Paleocene Aquia Formation of Maryland:
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Hasle Beach - Bornholm, Denmark (Mid Jurassic fossils)
Sauroniops posted a topic in Fossil Hunting Trips
Hello there fossil forum! This post will actually contain some of my finds from 2 trips to the same location, namely the island of Bornholm in Denmark. I went there this summer, and made quite an interesting discovery, which I will get back to, and then went on yet another trip, which I got home from less than a week ago. I doubt many of you know about it, unless you're Danish or have an interest in the geology of Denmark, but most of Denmark was underwater for pretty much all of the Mesozoic era. That is, of course, with the exception of Bornholm, which is a geologist's/paleo- 19 replies
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Could this be a chimaera or rather Ischyodus dental plate? Upper Jurassic of Boulonnais, North of France.
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Elasmodectes avitus VON MEYER, 1862 - a long-nosed chimaera
oilshale posted a gallery image in Members Gallery
From the album: Vertebrates
Elasmodectes avitus VON MEYER, 1862 a Rhinochimaeridae - a long-nosed chimaera Late Jurassic Tithonian Painten Bavaria Germany Elasmodectes reconstruction -
Hi all. My kids and I were hunting in the North Sulphur River today and we found this long, spine-like fossil with a double row of tooth-like structures. I have been searching on the web and think that it may be a fin spine of a chimaeroid; however, I want to see what others think. The reasons for my thinking this is that the double row of tooth-like projections are evenly and tightly spaced and that the projections are aligned between the rows. The projections do not look like they are teeth (I see no tooth sockets) and are curved. Also, there is a faint groove between the doub
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From the album: Eocene vertebrates of Ukraine
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A modern Ratfish, Bischoff Island, British Columbia, Canada (from Wikipedia: Clark Anderson/Aquaimages) Lit.: Grogan, E. Lund, R. 2002: The geological and biological environment of the Bear Gulch Limestone (Mississippian of Montana, USA) and a model for its deposition. Geodiversitas 2002, 24 (2): 296-315 Lund, R. 1977 - Echinochimaera meltoni new genus and species (Chimaeriformes), from the Mississippian of Montana. Annals of Carnegie Museum, 46 (13): 195-221. Hagadorn, J.: Bear Gulch: An exceptional Upper Carboniferous Plattenkalk
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Taken from Lund, Richard, and Grogan, E.D., 2005, Bear Gulch web site, www.sju.edu/research/bear_gulch, 14/11/2016, page last updated 2/1/2006: "Heteropetalus elegantulus is an elegantly slim little euchondrocephalan with many different tooth shapes along its jaws. It ranges to only about 4 inches in length. Skull, jaws, and dentition place it close to Debeerius. It is common in the weedier shallow water areas. http://people.sju.edu/~egrogan/BearGulch/images_fish_art/Hetelegantulus_duo.jpg Male (top) and female (bottom). There are no scales, except for
.thumb.JPG.3a1778fd4fed4623e03d62617112cc00.JPG)
