dc.contributor.author |
Tyler, James C. |
en |
dc.contributor.author |
Bannikov, Alexandre F. |
en |
dc.date.accessioned |
2007-07-31T16:42:13Z |
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dc.date.available |
2007-07-31T16:42:13Z |
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dc.date.issued |
1992 |
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dc.identifier.citation |
Tyler, James C. and Bannikov, Alexandre F. 1992. <em><a href="https://repository.si.edu/handle/10088/1992">Remarkable New Genus of Tetraodontiform Fish with Features of Both Balistids and Ostraciids from the Eocene of Turkmenistan</a></em>. Washington, D.C.: Smithsonian Institution. In <em>Smithsonian Contributions to Paleobiology</em>, 72. <a href="https://doi.org/10.5479/si.00810266.72.1">https://doi.org/10.5479/si.00810266.72.1</a>. |
en |
dc.identifier.uri |
http://hdl.handle.net/10088/1992 |
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dc.identifier.uri |
http://dx.doi.org/10.5479/si.00810266.72.1 |
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dc.description.abstract |
A new genus and species of tetraodontiform fish, <i>Eospinus daniltshenkoi</i>, is described from the Lower Eocene of Turkmenistan (Danatinsk Formation). It is referred to the Balistoidea because it has three large dorsal-fin spines; the pelvic fin reduced to a rudimentary but prominent structure apparently composed of two partially fused spines at the posterior end of the pelvis; and enlarged scale plates that form an incomplete carapace or loosely articulated armature around much of the body. It differs from all other balistoids in having a long median spine projecting forward from the snout and another spine projecting posteriorly from the middle of each side of the body; lower jaw teeth twice as long as the upper jaw teeth; and in lacking encasing scales around the rudimentary pelvic spine. <i>Eospinus</i> is the first record of a balistoid fish from the Eocene with three dorsal-fin spines and the pelvic spines fused together at the end of the pelvis, as otherwise only occurs in balistids, which are first recorded from the Oligocene. |
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6780569 bytes |
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1721549 bytes |
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dc.format.mimetype |
application/pdf |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en_US |
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dc.title |
Remarkable New Genus of Tetraodontiform Fish with Features of Both Balistids and Ostraciids from the Eocene of Turkmenistan |
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dc.type |
Book, Whole |
en |
dc.identifier.srbnumber |
113492 |
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dc.identifier.eISSN |
1943-6688 |
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dc.identifier.doi |
10.5479/si.00810266.72.1 |
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dc.description.SIUnit |
nmnh |
en |
dc.description.SIUnit |
nh-paleobiology |
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