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Showing most informative content since 08/19/2018 in Fossils

  1. 7 likes
    Preserved from the ventral side. Lit.: L. Yochelson, Ellis & Stürmer, Wilhelm & O. Stanley, George. (1983). Plectodiscus discoideus (Rauff): a redescription of a chondrophorine from the Early Devonian Hunsrück Slate, West Germany. Paläontologische Zeitschrift. 57. 39-68. 10.1007/BF03031748.
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    Lit.: Blot, J. (1976) Les anguilliformes fossiles du Monte Bolca. 2e Congres Europeen des Ichtyologistes Europeens, Paris, 1976, Revue Trav. Inst. Pech. Marit., Nantes, 40 (3&4) 509-511, 1 tabl. Blot, J. (1978) Les apodes fossiles du Monte Bolca. Studi e Ricerche sui Giacimenti Terziari di Bolca, Verona 3 (1) 1-260, 120 fig, 21 tabl. 39pl. Blot, J. (1984): Les Apodes fossiles du Monte Bolca. 2. Actinopterygii : Ordre des Apodes (Anguilliformes): Famille des Paranguillidae Blot 1980. Museo civico di storia naturale di Verona, 1984, p. 62-238, 24 p. di tav.
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    Lit.: C. Bartels, M. Poschmann, T. Schindler & M. Wuttke (with contributions by H.-G. Mittmeyer) Palaeontology and palaeoecology of the Kaub Formation (Lower Emsian, Lower Devonian) at Bundenbach (Hunsrück, SW Germany). Metalla (Bochum) 9.2, 2002, 105-122
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    Busycon maximum is a geographically widespread shell found only in the Upper Pliocene of the Southeastern United States. Form alumense from the Florida Panhandle differs from B. maximum found in the Sarasota shell pits by lacking shoulder knobs and in having a more compacted spire.
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    Found as float in a bulldozed area.
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    A bottom dweller, similar to the recent Gobius. Lit. Bannikov A.F. 2004: Eocottidae, a new family of perciform fishes (Teleostei) from the Eocene of northern Italy (Bolca) // Studi ric. giacim. terz. Bolca. Verona. 2004. V. X. p. 17-35. Bannikov A.F. 2006: Bassanichthys, a new replacement generic name for the Eocene Bassania Bannikov, 2004 (Teleostei, Perciformes)// Paleontological Journal, Vol. 40, Issue 3, p. 340.
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    Lit.: T. Astrop: PHYLOGENY AND EVOLUTION OF MECOCHIRIDAE (DECAPODA: REPTANTIA: GLYPHEOIDEA): AN INTEGRATED MORPHOMETRIC AND CLADISTIC APPROACH. JOURNAL OF CRUSTACEAN BIOLOGY, 31(1): 114-125, 2011 R. M. D. Feldmann, F. J. Vega, P. Garcia-Barrera, R. Rico-Montiel, and L. M. Lopez. 1995. A new species of Meyeria (Decapoda: Mecochiridae) from San Juan Raya Formation (Aptian: Cretaceous), Puebla State, Mexico. Journal of Paleontology 69(2):402-406
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    An extant species which is commonly called the Scotch Bonnet shell.
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    Specimen was found using a sifting method at or around 1 feet of water in the banks of the Caloosahatchee River. Among other finds in same 2sq meters where angulosplenials, there is no way to take those into the Species level but are without doubt representations of the Ranidae Family. Also found was portion of a fossilized pelvis of what appear to be Deer (this is not corroborated to the Species), numerous scales of the fish family Lepisosteidae (Garfish), other unidentified but likely amphibian bones, 2 shark teeth (yet to be identified), unidentifiable bone fragments no larger than 2 inches, Drum fish teeth, unidentifiable teeth fragments, yet to be identified Cat Fish dorsal spikes and an innumerable variety of mollusk fossils. The presence of both amphibians and sharks in this locality demonstrate that within the Late Pliocene and Early Pleistocene Epochs this area of Glades County, FL was at one point lacustrine and at another a shallow sea environment. One can only speculate that there was intense glacial activity within such time frame.
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    A fragment of a left jaw dentary bone from a Kritosaurus.
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    Carrier shell Xenophora deshayesi. This gastropod was a shell collector, having one of his collected items still attached (an olive snail, Olivella clavula (Lamarck, 1810)). The locations of the other shells or shell fragments are still visible. The specimen was found in two pieces and then glued back together Shell collector? A friend found another one in this outcrop that collected only small quartz pebbles - obviously a mineral collector! Exact locality is Höllerkogel-18 in my own documentation. It is a tiny outcrop (about 1-2 square meters) in a densely wooded, very steep area southwest of St. Josef, Styria, Austria. This small outcrop, composed of a medium grained, quartz-rich, somewhat limonitic sand yielded, from November 2016 to May 2018, at least 80 species of gastropods and bivalves; it is far from exhausted. Most of the fossils are characterized by a partial limonitic staining and usually very good preservation. The species X. deshayesi is not common there, but fragments are not very rare either. The sediments in the area belong to the "Florianer Schichten", which are part of the western Styrian basin at the eastern margin of the Alps. The "Florianer Schichten" are about 15 Ma old (Langhian, or "Badenian" in Paratethys stratigraphic terms).
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    This species of Isotelus is yet to be formally described. It has been given the provisional species name (suspended under quotation marks) as "mafritzae." There are two known types (A and B ) of I. "mafritzae" that occur exclusively in the Lindsay Formation: Type A have long, slender genal spines, while Type B have none. See: Rudkin, D.M. & Tripp, R.P. 1987 A reassessment of the Ordovician trilobite Isotelus, part II: Ontario species. Canadian Paleontology and Biostratigraphy Seminar, London, Ontario, Sept. 1987.
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    It has suffered from its fossilization and is a little crushed, but it's a rare one.
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    This is the only described Nodosaurid in the Hell Creek Formation at the moment. New discoveries may make it impossible to bring this tooth down to genus and species.
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    This is the third phalanx from the Terror Bird Titanis walleri, found at a Blancan site in a North Central Florida river.
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    Identified by Prof Wang Yuan, Institute of Vertebrate Paleontology and Paleoanthropology, Beijing with the following remarks: 'The phalangeal formula for Chunerpeton is variable. This specimen falls in the range as I observed hundreds of specimens of this genus and species. One problem is that, as I noted in the last email, Gao and Shubin (2012) named Beiyanerpeton jianpingensis but it is actually a Chunerpeton by my judgement. The salamander you send to me should be from the same region, but a different quarry as "Beiyanerpeton".' The white mass next to the mouth seems to be either a regurgitate or a coprolite. Lit.: K.-Q. Gao and N. H. Shubin. 2003. Earliest known crown-group salamanders. Nature 422:424-428 Yuan Wang, Liping Dong1 & Susan E. Evans (2014) Polydactyly and other limb abnormalities in the Jurassic salamander Chunerpeton from China.Palaeobio Palaeoenv DOI 10.1007/s12549-015-0219-7
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    A damaged 1.3 cm long Steneosaurus tooth from the quarry Kromer in Holzmaden (Lower Jurassic).
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    Here are interior and exterior views of both valves of the Cretaceous oyster, Cameleolopha bellaplicata, collected in Post Oak Creek in Sherman, Texas, The specimen is more oval and elongated that most of the members of its species. The calcite valves with a trace of interior aragonite mother of pearl are covered in yellowish calcite cemented sandstone. The larger valve has the remnants of an attached ramose bryozoan that grew on the shell since the muddy Arcadia Park Formation did not provide a great hard ground to grow on. An unidentified domed colonial stone coral species also grow on the oysters in the area. The oysters are found in the upper part of the Arcadia Park Formation that contains a yellowish calcareous sandstone that is rich in small bivalves, shark teeth and other vertebrates. Similar mostly thin-bedded, yellowish and calcareous sandstones occur throughout north Texas and may be related to the thicker Bells Sandstone in eastern Grayson County. See this best reference: Hook, S. C. & Cobban, W. A. 2011. The Late Cretaceous oyster Cameleolopha bellaplicata (Shumard1860), guide fossil to middle Turonian strata in New Mexico. New Mexico Geology. 33: 67-95. Hook points out that Cameleolopha bellaplicata was "initially Ostrea, then Lopha, Alectryonia, and Nicaisolopha, and, now, Cameleolopha." Hook describes the oyster as follows: "Cameleolopha bellaplicata (Shumard 1860) is a medium-sized, plano-convex oyster with 8–27 generally simple plicae (ribs) that radi­ate from the beak. Secondary ornamentation consists of concentric lamellae that intersect the ribs. The general absence of attachment scars on preserved left valves indicates the species lived unattached as adults on the sea floor. Its left valve is larger and more convex than that of C. lugubris, giving it a more robust appearance and making it better suited to higher-energy, nearshore environments. The type specimens of C. bellaplicata came from the upper Eagle Ford Shale of Grayson County, Texas..." For additional information on the oyster see: Shumard, B. F., 1860, Descriptions of new Cretaceous fossils from Texas: Transactions of the Academy of Science of St. Louis, v. 1, pp. 590–610. Vyalov, O. S., 1936, Sur la classification des huîtres: URSS Academy of Sciences, Comptes rendus (Doklady), new series, v. 4 (13), no. 1 (105), pp. 17–20 (after August 1).
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    Tooth of a velociraptorine raptor. Specifically the serrations of the tooth are typical of Saurornitholestes.