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Taxonomy from Lowney, 1980. Diagnosis for the genus Parahaplolepis from Lowney 1980, p. 944: "The body is relatively long and slender, with a ventral lateral line. There are no separate dermopterotics in the skull roof. The anterior pit line of the skull roof extends onto the frontal from the parietal. The posterior margin of the skull roof is deeply embayed for the reception of the extrascapulars and posttemporals, and the latter two pairs of bones meet in the midline. The skull roof ornament consists of broad raised rugae or low tubercles. The maxilla (in the one species where it is known) has a rather tall posterior expansion. There is a small quadratojugal present behind the maxilla." Diagnosis for the species P. tuberculata from Lowney 1980, p. 945: "The frontals are covered with a randomly arranged pattern of broad rugae and smaller coarse tubercles. Their anterior border is usually indented slightly for the reception of the postrostral, and the posterior margin is more or less straight across. The latter characters serve to distinguish P. tuberculata from the other known members of the genus, P. anglica and P. canadensis, in which the posterior margins are obliquely directed anteriorly (Westoll, 1944; Baird, 1978). The fin positions are as follows: dorsal-23, anal-18, pelvic-8, caudal-27. The anterior lateral line scales are serrate on the hinder margin, but these serrations disappear at the level of the dorsal fin. The depth of the lateral line scales is approximately four times the width." Line drawing from Westoll 1944, p. 30: Identified by TFF member dshamilla. References; Hook, Robert W. and Baird, Donald (1988): An Overview of the Upper Carboniferous Fossil Deposit at Linton, Ohio. The Ohio Journal of Science. v88, n1 (March, 1988), 55-60. R.W. Hook and J. C. Ferm (1985) A depositional model for the Linton tetrapod assemblage (Westphalian D, Upper Carboniferous) and its paleoenvironmental significance. Phil. Trans. R. Soc. Lond. B 311, 101-109 (1985) Hook, Robert W. and Baird, Donald (1986) The Diamond Coal Mine of Linton, Ohio, and its Pennsylvanian-age vertebrates. Journal of Vertebrate Paleontology, Vol. 6, 1986, pp. 174-190. Westoll, T. Stanley (1944) The Haplolepidae, a new family of late Carboniferous bony fishes : a study in taxonomy and evolution. Bulletin of the AMNH ; v. 83, article 1 Lowney, K. (1980) A Revision of the Family Haplolepidae (Actinopterygii, Paleonisciformes) from Linton, Ohio ( Westphalian D, Pennsylvanian). Journal of Paleontology, Vol. 54, No. 5, pp. 942-953. dshamilla: Identifying Linton Paleoniscoid Fish
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- allegheny
- carboniferous
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Line drawing: References: Hook, Robert W. and Baird, Donald (1988): An Overview of the Upper Carboniferous Fossil Deposit at Linton, Ohio. The Ohio Journal of Science. v88, n1 (March, 1988), 55-60. R.W. Hook and J. C. Ferm (1985) A depositional model for the Linton tetrapod assemblage (Westphalian D, Upper Carboniferous) and its paleoenvironmental significance. Phil. Trans. R. Soc. Lond. B 311, 101-109 (1985). Robert W. Hook and Donald Baird (1986) The Diamond Coal Mine of Linton, Ohio, and its Pennsylvanian-age vertebrates. Journal of Vertebrate Paleontology, Vol. 6, 1986, pp. 174-190.
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Nothing to add.
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Can anyone help with ID on this fossil please? I am told it is not fish part, but that is all I do know. Carboniferous, Pennsylvanian.
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Pennsylvanian, all Lacoea cones??
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Pennsylvanian, Megalopteris?
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Pennsylvanian, both plates Danaeites, I believe. The one with the individual leaves has a fish scale in the upper left corner. Lots of fun today!
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Had a very productive couple of hours at the site today. Not sure what these are? Pennsylvaanian
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Hi everyone, I've recently done some shale collecting near the Rocky River in Ohio. I've found the shale in this area is late Devonian to Mississippian, and is good matrix to look for microfossils. I've collected some smaller material that I'm soaking and freezing to disaggregate, and also some larger material (1-6 inches). I wanted to know if anyone has had any experience with matrix from this area/from this period and if so are you more successful with smaller or larger material? Thanks very much!
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Found 8/1. Is this a Cordites Leaf?
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Brought back from the site 7/6. Seed?
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Found this beautiful example of a Megalopteris last weekend. Lots of detail and very happy when I cracked open the rock!
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Found this one today and not sure what it is?
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Found this one today that I really like. It has 3 different specimens in it. Lacoea, Lepidostrobus Cone and I am not sure what the larger one is?
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I found ones similar to this, but I think the shape is just a little different?
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Found today. Not sure what it is?
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Found today.Not sure what it is?
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Found this today. Shape looks different than others I have found?
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Just one of the fronds, I think you call it? I believe it is Danaeites?
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Not sure what this is, but I think it is one I found before? Paul?
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Found some really nice specimens of Lepidodendron today. Love the detail in this one.
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Felt bad about leaving this one behind, but will have to wait for another day. Too heavy for me to carry out. The top came out in a few pieces and I am afraid the bottom will also. Beautiful specimen I think.
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Found several of these today. Lepidostrobus Cone?
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Found this one today. It was a great therapy day today. You know it is a good time when you find so much you can't bring them all home. Not the most clear of specimens, but I think it may be a new one for me?
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Found 5 fish scales today. Some had pyrite on them, which was a first for me, but my fish also had pyrite on it. Here are 4 of them. The fifth was just too light to photograph.
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