A review is given of observations and interpretations of the attachment in Isocrinida. It is concluded that all adult Isocrinida discard distal parts of their column and live attached by distal cirri to the bottom or to objects lying on the bottom. From time to time the column may break below a nodal and the isocrinid drift along the bottom until it regains attachment with the cirri. In undisturbed environments a considerable length of the tapering distal part of the column may be maintained, and several specimens may be connected by the entangled distal parts of the columns lying on the bottom. Specimens of Seirocrinus subangularis attached to tree trunks in the Lower Jurassic Posidonia shale of Holzmaden, Germany, have been interpreted as pseudoplanktic. These are all adult specimens with distal parts of their column discarded before they attached themselves to the trunks. Furthermore, since adult specimens cannot swim to the surface, they must have attached themselves to sunken trunks lying on the bottom.

The increase in species and specimens of fossils in the uppermost part of the Maastrichtian White Chalk is interpreted as a result of reduced depth. The absence of bryozoans, brachiopods, and regular echinoids in the Cerithium Limestone indicates sedimentation in tidal pools. After sedimentation of the Cerithium Limestone, burrowing activity followed. A burrow of Brissopneustes danicus similar to burrows of the recent Echinocardium cordatum is described. Callianassa and its burrows are found in the Upper Danian calcarenite but not in the Lower Danian or Maastrichtian of Denmark. The dominant type of burrows along the Maastrichtian‐Danian boundary has presumably been formed by the crustacean Ctenocheles. The early post‐Maastrichtian burrowing activity was succeeded by (1) induration of the bottom sediment and a slight abrasion (2) dissolution of aragonite shells and siliceous sponges, (3) offshore sedimentation and filling of the burrows with Lower Danian chalk mud, bryozoan fragments and other fossil remains, and (4) settling in the deeper part of the soft chalk sediment and precipitation of flint in or around burrows near the surface of the sediment.

Upper Cretaceous and Paleocene decapod crustaceans are described from Nûgssuaq, West Greenland; 14 genera, 3 of them new, contain 2 new macrurans, 13 new brachyurans and a galathaeid, referable to a previously described species. They form a mixed assemblage, although 7 of the brachyuran taxa and one of the macrurans are of burrowing species. Homolopsis dispar Roberts 1962 is transferred to Eohomola gen. nov. and a new genus, Metahomola, is proposed.

on the Camerata in the same year. MOORE'S assignments also included the description of the Inadunata, a task in which he was ably assisted by N. GARY LANE and H. L. STRIMPLE. In spite of grave illness MOORE continued work on text for the Inadunata throughout 1973 and completed the task only a few months before his death in April, 1974. Until 1972, little thought had been given to the organization of materials for the introductory part, although in 1968, at the invitation of Dr. MOORE, ALBERT BREIMER had delivered a manuscript describing the anatomy, physiology, and ecology of living crinoids.In the spring of 1972, TEICHERT paid a visit to UBAGHS in Liege, Belgium, and the two of them drew up plans for preparation of materials required for the introductory sections of Part T and an outline of contents was prepared that was very closely adhered to in the cooperative efforts that followed. The editors enlisted the help of GEORGES UBAGHS to shape the chapter on skeletal morphology, of D. B. MACURDA,