Foraminifera

 
Foraminifera are single-celled marine organisms with internal shells commonly referred to as “tests”. The shells are commonly divided into chambers that are added during growth. Forams are found in a bewildering array of shapes and sizes. There are some 4,000 known species with a geological range from the earliest Cambrian to the present day. The following images are from the Vincentown formation (Paleocene) in New Jersey and are presently unidentified.

 The maximum size of most foraminiferan species is less than 1 mm. Some species
grow larger, up to 10 centimeters in length.

Vincentown Formation
 

Foraminifera
Vincentown Formation
Burlington County, NJ
  The tests are commonly divided into chambers that are added during growth.
 

Chambers aligned in a row.
 

I
 
Foraminifera
Vincentown Formation
Burlington County, NJ

One of the larger species at 2 cm or about 3/4 of an inch.