Is this Foraminifera?

[Creek - Don]

I found this 1/16 ~ 2/16 of an inch specimen from Trinity river, near downtown Dallas  where I also found species of Prionocyclus ammonite from Arcadia park formation (c. 89-91 mya). 

 

 

 

 

 

 

[Shamalama]

Hard to say for sure. Not enough exposed.

[Creek - Don]

Never mind. I found the answer via free online book called Geology of Dallas County. December 1941 

 

Adkins (1932, p. 433, 435) has prcposed the following tentative zonation of the Eagle Ford in the Dallas County area.

8. Alectryonia lugubris zone: shale with sand, shells, bones, fish teeth, and A. lugubris (Conrad) in Feet abundance; White Rock escarpment ........... 15

7. Prionotropis zone: shale and thin flaggy limestone; Prionotropis, Prionocyclus, Scaphites vermiculus Shumard; Arcadia Park .............. 60

G. Coilopoceras zone: shales; C. aff. eaglefordense; about ..................................... 75

5. Romaniceras-M etoicoceras whitei zone . . . . . . . . . 50

4. N eocardioceras zone: shales; Keenan's Crossing (/1.1. septem-seriatim, M etengonoceras dumbli), Horton's Mill, California Crossing; thickness uncertain, possjbly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3. Eucalycoceras bentonianum-Borissiakoceras zone: shales; Borissiakoceras n. sp., .l\Ietoicoceras irwini (Cottonwood Creek) ; Borissiakoceras n. sp., Eucalycoceras n. sp. (Walnut Creek) ; Eucalycoceras bentonianunt (Cragin), M etengonoceras dumbli CRETACEOUS ROCKS (Cragin), Proplacenticeras syrtale var. cum1ninsi (Cragin), Bcwulites gracilis Shumard, "Ancylocents" annulcdum Shumard, Inoceramus (Hack41 berry Creek); about ........................ 90

2. Acanthoceras (Eucalycocems?) wintoni zone: carbonaceous shales; A m,monites inequi}Jlicatus Shumard; about ............................ 145

1. Acanthoceras tarnmtense zone: shale, sandstone; Tarrant station; about . . . . . . . . . . . . . . . . . . . . . . 15

 

That the dark muds which now represent the Eagle Ford were originally deposited in marine waters is indicated by the remains of typical marine organisms, such as Foraminifera and ammonites, which occur at intervals from the bottom to the top of the formation. Scott (1940, p. 322) suggests that the muds were deposited in the infra-neritic zone; that is, in waters deeper than 120 feet but not more than 600 feet deep.

 

Source: Geology of Dallas County December 1941 

[Coco]

@Foram-Mike

 

Coco

[Foram-Mike]

Hi Coco, I do not think it is a foram. Michael

 

 

[ClearLake]

I am not sure how a zonation of the rocks in your area answers the question. If you are suggesting that because there are forams in some zones, then that is a foram, I don’t believe that is how it works. The item in question needs to fit the description of a foram. And as @Shamalama has said, from those pictures I think anyone would be hard pressed to say that is a foram. What is the size?  Is it only partially exposed?  Did you find something in the online book that looked like your item in question?