{"type": {"key": "/type/work"}, "title": "Ontogenetic development in late Pennsylvanian crinoid columnals and pluricolumnals [by] Russell M. Jeffords and Theo. H. Miller", "subjects": ["Fossil Crinoidea", "Paleontology"], "subject_times": ["Pennsylvanian"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL167405A"}}, {"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL11662541A"}, "role": "joint author."}], "key": "/works/OL43468488W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2025-06-01T19:59:07.854590"}, "last_modified": {"type": "/type/datetime", "value": "2025-06-01T19:59:07.854590"}}