. Allan Hancock Pacific expeditions. [Reports]. Scientific expeditions. 22 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 The north wall of Redondo canyon is represented by eight samples coming from depths of 107 to 554 meters. The shallowest contains considerable amounts of gravel and shell fragments mixed with green mud; one in 113 m has sandy mud. Both are characterized by a high diversity of species belonging chiefly to the outer shelf fauna. Poly- chaetes number 56 species and 524 specimens in the first, and 45 species with 609 specimens in the second, of which nearly half were not present in
. Allan Hancock Pacific expeditions. [Reports]. Scientific expeditions. 22 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 The north wall of Redondo canyon is represented by eight samples coming from depths of 107 to 554 meters. The shallowest contains considerable amounts of gravel and shell fragments mixed with green mud; one in 113 m has sandy mud. Both are characterized by a high diversity of species belonging chiefly to the outer shelf fauna. Poly- chaetes number 56 species and 524 specimens in the first, and 45 species with 609 specimens in the second, of which nearly half were not present in the first sample. A commensal hydroid, Monobrachium parasitum, is frequent on shells of a small clam, Axinopsida, and a small sipunculid, possibly Golfingia sp., (see Fig. 7) in Rhabdamina, an arenaceous foraminiferan, both in shallowest sandy sediments at depths of 107 and 120 meters. Ophiuroids, Amphiodia urtica and A. digitata exist in peak numbers in shallowest parts, together with. ;<:"'tt^; , A ^^3 Fig. 7. ?Golfingia sp., a sipunculid, penetrating Rhabdamina, a foraminiferan, from the upper end of Santa Monica canyon. a. the Rhabdamina partly broken open to show two sipuncu- lids in place, b. a single sipunculid, removed from the host, showing distal end of introvert with oral lobes and sub- terminal spines, and anal pore, x Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Allan Hancock Foundation. Los Angeles, University of Southern California Press
Size: 1461px × 1710px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectio, booksubjectscientificexpeditions
