. Bulletin of the British Museum (Natural History), Geology. FROM GREAT BRITAIN AND FRANCE 285. Fig. 22. Three similar species of Cleistosphaeridium. a. Cleistosphaeridium ehrenbergi (Deflandre). xc. 1280. b. Cleistosphaeridium polyacanthum sp. nov. Holotype. Xc. 1400. c. Cleistosphaeridium polytrichum (Valensi). Xc. 1280. Dimensions. Holotype : shell length 40 /x, breadth 30 \x. ; length of the processes 20-22 [i. Range of the English specimens (5 specimens measured) : shell length 33-42 fi, breadth 28-35 fi ; French specimens (4 specimens measured) : shell length 30-45 /Li, breadth 25-38 /x.
. Bulletin of the British Museum (Natural History), Geology. FROM GREAT BRITAIN AND FRANCE 285. Fig. 22. Three similar species of Cleistosphaeridium. a. Cleistosphaeridium ehrenbergi (Deflandre). xc. 1280. b. Cleistosphaeridium polyacanthum sp. nov. Holotype. Xc. 1400. c. Cleistosphaeridium polytrichum (Valensi). Xc. 1280. Dimensions. Holotype : shell length 40 /x, breadth 30 \x. ; length of the processes 20-22 [i. Range of the English specimens (5 specimens measured) : shell length 33-42 fi, breadth 28-35 fi ; French specimens (4 specimens measured) : shell length 30-45 /Li, breadth 25-38 /x. ; length of the processes 16-20 /n. Description. This chorate cyst has processes in variable number, 50-70, their cavity directly connected to the shell interior. There are no fields or plates identi- fiable on the 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 British Museum (Natural History). London : BM(NH)
Size: 1547px × 1614px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
