| Home> Cenozoic> Miocene>
 

List species

Artostrobus quadriporus Bj°rklund, 1976

Description - Add description

Shell consists of cephalis, thorax and abdomen, with no ring separating the thorax and the abdomen. The 25 specimens examined vary from 40 to 50Ám across the thickest part on the abdomen, with a length varying from 90 to 125Ám. The shell wall is rather thick, and pores on the upper half of the test are round to square, while the test at this part is heavily spiny (pl. 23, figs. 15-17 and 20). The lower part of the test is characterized by being more delicate, the spines are usually missing.
Dimensions of holotype: The broadest point on the abdomen is 44Ám, while the length of the test is 107Ám (pl. 23, fig. 17). Holotype from Sample 339-11, CC.
Bj°rklund 1976


Description

 

Images

 

Synonyms

 

References

 

Distribution

 

Discussion / Comments

 

Web links