North American index fossils, invertebrates . Fig. 1902. Lecanocrinus macroj>etalus, \ys\s oi caXyx. (After Hall.) LXXIV. Taxocrinus Phillips. Similar to Ichthyocrinus, but all 5 R separated by B larger than the others and truncated, supporting anIRA which is followed by a longitudinal row of small supple-mentary anals interposed between numerous minute irregularpieces. T. elegans (Billings). Ordovicic. Calyx small and conical, with arms one and one half inches high. Trenton of Ottawa. ECHINODERMA TA—CRINOIDEA. 565 195. T. thiemei Hal
North American index fossils, invertebrates . Fig. 1902. Lecanocrinus macroj>etalus, \ys\s oi caXyx. (After Hall.) LXXIV. Taxocrinus Phillips. Similar to Ichthyocrinus, but all 5 R separated by B larger than the others and truncated, supporting anIRA which is followed by a longitudinal row of small supple-mentary anals interposed between numerous minute irregularpieces. T. elegans (Billings). Ordovicic. Calyx small and conical, with arms one and one half inches high. Trenton of Ottawa. ECHINODERMA TA—CRINOIDEA. 565 195. T. thiemei Hall. (Fig. 1903.) Mississippic. Crown short and stout. Basal spines of Missouri and
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Keywords: ., bookcentury1900, bookdecade1900, bookidn, booksubjectpaleontology
