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Report Fossil
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By oilshale (edited)
Kingdom: Animalia
Phylum: Chordata
Class: Actinopteri Cope 1871
Order: Palaeonisciformes Hay, 1929
Family: Haplolepidae Westoll, 1944
Genus: Parahaplolepis
Species: Parahaplolepis tuberculata
Author Citation NEWBERRY, 1856
Eon: Phanerozoic
Era: Paleozoic
Period: Carboniferous
Sub Period: Pennsylvanian
Epoch: Middle
International Age: Moscovian (late)
Allegheny Formation
Upper Freeport coal bed
Collector: T. Bastelberger
Date Collected: 06/01/1982
Acquired by: Field Collection
Diamond Mine dump
Jefferson County
Ohio
United States
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.
Edited by oilshale
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