Fossils of Uncertain Affinity from the Upper Devonian of Iowa

@article{Davis1975FossilsOU,
  title={Fossils of Uncertain Affinity from the Upper Devonian of Iowa},
  author={R. A. Davis and Holmes A. Semken},
  journal={Science},
  year={1975},
  volume={187},
  pages={251 - 254}
}
Thousands of specimens of the enigmatic fossil Gluteus minimus (new genus, newt species) occur in a 5-centimeter-thick interval within the Maple Mill Shale and in equivalent deposits of the Devonian of eastern Iowa. They are roughly lenticular. bilobed fossils up to 11 millimeters in diamiter and 8 milllimeters thic. These objects consistently asymmetrical in the same direction. defy placement in any known higher taxon when their morphology. histology, and apatitic composition considered. 
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