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Showing results for tags 'sarcopterygii'.
Found 14 results
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From the album: Misha's Middle Devonian Fossils
Gyroptychius agassizi Frontal portion of large predatory osteolepiform sarcopterygian Eifelian Middle Devonian Sandwick Fish bed Orkney Scotland -
From the album: Misha's Late Devonian Fossils
Hyneria lindae Large tristichopterid fish tooth My first complete tooth from Hyneria without significant feeding damage. Largest one too, unfortunately broke apart when getting it out, but was able to salvage and glue together the major pieces. Catskill Formation Fammenian Pennsylvania -
The Sarcopterygian fish (also called lobed-fined fish) are an ancient group of fish that emerged in the Late Silurian 425 Million Years ago and gave rise to the direct ancestors of the first land vertebrates, the amphibians during the Late Devonian. Today represented by the still living Coelacanths and Lungfish, These fish were incredibly common and diverse during the late Paleozoic. But the Permian-Triassic Extinction Event 252 Million Years ago nearly decimated the group. But thankfully some of the Sacopterygii survived and all living Sarcopterygians and trace their origins to these few hardy survivors. Here's a list of all currently known Sacropterygian fish genera and families that survived the Permian-Triassic Extinction Event. If I forget any examples, please let me know and I'll add the examples to the list promptly. Sarcopterygii Dipnoi (Lungfish) Gnathorhiza (Dipnoid) (Carboniferous-Early Triassic, 318.1-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=90709 https://www.researchgate.net/publication/278743788_Environmental_significance_of_lungfish_burrows_Gnathorhiza_within_Lower_Permian_Wolfcampian_paleosols_of_the_US_midcontinent https://www.researchgate.net/publication/291808594_The_westernmost_occurrence_of_Gnathorhiza_in_the_Triassic_with_a_discussion_of_the_stratigraphic_and_palaeogeographic_distribution_of_the_genus Ceratodontiformes https://www.researchgate.net/publication/284186167_The_first_find_of_Permian_ceratodontids_Dipnoi_Osteichthyes_in_Russia Coelacanthiformes (Coelacanth fish) Coelacanthus (Coelacanthid) (Carboniferous-Early Triassic, 314.6-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=34911 https://www.researchgate.net/publication/226724498_Erratum_to_A_coelacanthid-rich_site_at_Hasbergen_NW_Germany_taphonomy_and_palaeoenvironment_of_a_first_systematic_excavation_in_the_Kupferschiefer_Upper_Permian_Lopingian https://www.researchgate.net/publication/265184906_Coelacanths_from_the_Middle_Triassic_Luoping_Biota_Yunnan_South_China_with_the_earliest_evidence_of_ovoviviparity I hope you all find this list helpful!!! -
From the album: Misha's Middle Devonian Fossils
Onychodus sigmoides sarcopterygian fish teeth Middle Devonian Onondaga Limestone Jamesville Quarry Central NY -
Hello everyone, I recently came across some fossils posted on our favorite auction site described as Onychodont teeth from Yunnan, China. This immediately caught my eye and I decided to send in a very low offer, not expecting to even purchase or bid, just to see how much the seller might ask for a fossil like that. Surprisingly the offer was accepted, and after a few weeks this fossil arrived. It's a 3cm long tooth on a Limestone matrix with other fragmented remains from fish. I know that identifying Devonian fish teeth is something that is very difficult to do, so I am not expecting that it can be done with this specimen, but I wanted to know if there's any reason to believe it could've come from an Onychodont like the seller claimed. Additionally, I asked the seller where in Yunnan this was found and I was told it comes from Wuding County, I was wondering if by any chance anyone might know what formation this may have them come from, I looked it up and a number of fossils described from the Haikou Formation come up, although I couldn't find much more info on the formation itself to confirm if this could be the origin of the fossil. As always, thank you for reading and any assistance you may be able to offer.
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From the album: Misha's Late Devonian Fossils
Holoptychius sp. Fammenian Ketleri Formation Venta River Latvia -
From the album: Misha's Late Devonian Fossils
Small sarcopterygian scales -
From the album: Misha's Late Devonian Fossils
Jaw section of a small sarcopterygian fish, possibly Laccognathus panderi. From the Lower Frasnian, Late Devonian, Lode Quarry, Latvia.-
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From the album: Misha's Late Devonian Fossils
Jaw section and teeth of sarcopterygian fish, possibly Laccognathus panderi. Lower Frasnian, Late Devonian, Lode Quarry, Latvia. -
From the album: Misha's Late Devonian Fossils
Holoptychius scale positive and negative, beautifully preserved, from a Rte 15 roadcut. Gift from @historianmichael Rte 15, Late Devonian, Catskill Fm., PA.-
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- holoptychius
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From the album: Misha's Late Devonian Fossils
This block actually contains many Holoptychius sp. scales, but the rest are not visible as they are layered onto each other, you can see some to the right of the scale on the outside. Late Devonian, Catskill Fm,. PA.-
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From the album: Misha's Late Devonian Fossils
Teeth from the Tristichopterid Hyneria lindae, these are on the smaller side and quite partial but still have nice preservation and beautiful enamel. Late Devonian, Catskill Fm., PA.-
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- hyneria
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A juvenile lungfish (11cm) from the famous Miguasha fossil site, now a UNESCO World Heritage Centre. Taxonomy from Fossilworks.org. Emended genus diagnosis from Cloutier 1996, p. 199: " Maximum depth of body one-sixth of its total length. First dorsal fin low, with maximum height from one-eighth to one-seventh its length, originating at the level of the fourth supraneural. First dorsal fin 16% of total length without ossified radials; second dorsal fin 30% of total length, and higher than first dorsal fin, itsmaximum height amounting to two-thirds of maximum body depth. Traquair (1893) erected the genus Scaumenacia based on the presence of a "double dorsal fin"; however, the presence of two dorsal fins is plesio- morphic and therefore non-distinctive for the genus. Hussakof (1912, p. 136) provided a series of distinctive features for Scaumenacia, some of which are used in the amended diagnosis." Diagnosis for the spcies is identical. Line drawing from Cloutier 1996, p. 207: Identified by oilshale. References: J. F. Whiteaves (1881) On some remarkable fossil fishes from the Devonian rocks of Scaumenac Bay, in the Province of Quebec. Journal of Natural History 8(44):159-162. O. P. Hay (1902) Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179:1-868. R. Cloutier (1996) Chapter 18 Dipnoi (Akinetia: Sarcopterygii) in: Devonian Fishes and Plants of Miguasha, Quebec, Canada. Publisher: Verlag Dr. Friedrich Pfeil, München, Editors: Hans-Peter Schultze, Richard Cloutier.
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- devonian
- escuminac bay
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Just got back from a 5 day trip to western NSW where we visited a number of sites, some of which we had not visited before. Will post more photos and information over the next few days as I have a lot to photograph, but here are some field shots from day two (our first collecting day)... Our first site was located near Grenfell and is known for its excellent Devonian fish fauna, including placoderms and sarcopterygians. While not as well preserved as the nearby Canowindra site, these are collectable which is a start . We were only given a vague site on a hillside located on private property, so once we had permission to access the site the next issue was finding where the fossil bearing layers were. This involved climbing a very steep hill and breaking open any rocks we saw, and after finding evidence of placoderm plates the next task was to figure out where they originated. A number of fossil bearing layers were found and it seems the material is very extensively distributed, presumably occurring throughout the surrounding hills as well. Here are some photos of one rock face we worked and the terrain - There were a number of rocks with exposed fossils on them, for example this one which is covered in ornamentation from placoderm plates. And here is a field photo of a partial Sarcopterygian(?) jaw, my thumb is on the left for scale.
