DIY History | Transcribe | Scholarship at Iowa | Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898 | Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 61

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Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898

Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 61

[page]60.[/page]

and is protected by a combination of calcareous plates. The mouth is, as a general rule, situated at the center of the upper surface; from the margin of this surface, spring the jointed flexible arms which are principally five in number and which carry lateral appendages or [?pinnules?]. The inner or upper side of the arms are supplied with grooves.

[underlined][underlined][underlined]PALEOCRINOIDEA.[/underlined][/underlined][/underlined]

[underlined][underlined]Poteriocrinidae[/underlined][/underlined]

[underlined][?Zeacrimis?] microspinus[/underlined], McChesney.
Plate XII. figures 6 and 7.
McChesney, 1860. New Paleozoic Fossils, p.10.
     Body in form of a shallow cup, which is rather deeply depressed in the center. The depressed portion includes the basal and the lower

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[page]60.[/page] and is protected by a combination of calcareous plates. The mouth is, as a general rule, situated at the center of the upper surface; from the margin of this surface, spring the jointed flexible arms which are principally five in number and which carry lateral appendages or [?pinnules?]. The inner or upper side of the arms are supplied with grooves. [underlined][underlined][underlined]PALEOCRINOIDEA.[/underlined][/underlined][/underlined] [underlined][underlined]Poteriocrinidae[/underlined][/underlined] [underlined][?Zeacrimis?] microspinus[/underlined], McChesney. Plate XII. figures 6 and 7. McChesney, 1860. New Paleozoic Fossils, p.10. Body in form of a shallow cup, which is rather deeply depressed in the center. The depressed portion includes the basal and the lower