This scholarly volume delves into the anatomy and relationships of Uintacrinus with careful analysis of hundreds of specimens. It examines how supplementary plates develop as the organism grows and how this variation informs the classification of related crinoids. The book also surveys ventral and tegmen structures, comparing ancient forms to living relatives to illuminate evolutionary connections.

Grounded, specimen-based findings drawn from about six hundred fifty examples
Clear discussions of interbrachial plates, base forms, and their significance
Illustrations and plates that show variations in size, shape, and structure
Context on how fossil crinoids relate to modern manganese and other echinoderms

Ideal for readers of paleontology, fossil crinoids, and the history of echinoderm anatomy who want a rigorous, evidence-driven view without speculation.

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