Is This A Fusulinid?

[barefootgirl]

Hit the Ben Franklin Bridge yesterday with Barry and Mako Ken. Found some good stuff but this one thing had me stumped. I think I remember someone posting something similar to this not to long ago but I couldn't remember what it was called. This would be from the sulphur, so it' upper cretaceous material.

Edited December 30, 2011 by barefootgirl

[Auspex]

"Rice Crispies" like that are usually fusulinids; a microsection would rule out something like ghost shrimp coprolites.

[Texas-Tunnel Rat]

It does not resemble the fusilidnd Tricites which is the next common of the order

Members of that clade have temoral range of Silurian to Permian.

[barefootgirl]

Well how about crustacean poop?

[Auspex]

Well how about crustacean poop?

Section some and look for organized structure under magnification; poop would lack any.

[Missourian]

To me, they look a bit too 'irregular' to be fusulinids, but yet it is conceivable that a fusulinid-bearing clast could somehow end up in a Cretaceous deposit.

[Indy]

To me, they look a bit too 'irregular' to be fusulinids, but yet it is conceivable that a

fusulinid-bearing clast could somehow end up in a Cretaceous deposit.

I do no think we are looking at coprolite

Loeblich and Tappan, 1988, gives a range of Fusulinida from the Lower Silurian

to the Upper Permian, although in the Treatise, 1964, it is given from the

Ordovician to the Triassic.

If they are not fusulinids...then I have no idea what the shapes could possibly

represent, unless we are looking at some kind of mineral deposit.

Edited December 30, 2011 by Indy

[Bullsnake]

Oolite?

[Carl]

Ghost shrimp (callianassid) feces would have some organized structure. Modern and fossil fecal pellets from ghost shrimp are easily identified by the bilaterally symmetrical arrangement of two groups of canals (sometimes referred to as haemorrhodilates) that run the length of the pellets parallel to the long axis. These canals derive from projections extending from the posterior margin of the rear gut that leave their mark on the still-fluid feces as it travels past them. These projections likely divert larger particles in the feces, which might irritate the tissues of the shrimp, away from the pellet edges. The pattern of canals is species-specific and aids ecologists studying modern ecosystems in identifying the pellet’s producers.

Section some and look for organized structure under magnification; poop would lack any.

[Rockwood]

Ghost shrimp (callianassid) feces would have some organized structure. Modern and fossil fecal pellets from ghost shrimp are easily identified by the bilaterally symmetrical arrangement of two groups of canals (sometimes referred to as haemorrhodilates) that run the length of the pellets parallel to the long axis. These canals derive from projections extending from the posterior margin of the rear gut that leave their mark on the still-fluid feces as it travels past them. These projections likely divert larger particles in the feces, which might irritate the tissues of the shrimp, away from the pellet edges. The pattern of canals is species-specific and aids ecologists studying modern ecosystems in identifying the pellet’s producers.

We need to get someone working on a gene splice into humans for this set up

[Texas-Tunnel Rat]

Ghost shrimp (callianassid) feces would have some organized structure. Modern and fossil fecal pellets from ghost shrimp are easily identified by the bilaterally symmetrical arrangement of two groups of canals (sometimes referred to as haemorrhodilates) that run the length of the pellets parallel to the long axis. These canals derive from projections extending from the posterior margin of the rear gut that leave their mark on the still-fluid feces as it travels past them. These projections likely divert larger particles in the feces, which might irritate the tissues of the shrimp, away from the pellet edges. The pattern of canals is species-specific and aids ecologists studying modern ecosystems in identifying the pellet’s producers.

But arnt members of the Callianassid tend to have "fuzzier" consitancy?

[jkfoam]

It does'nt look like fusulinids to me. It looks like a conglomerate of some sort.

Jim

[barefootgirl]

This thing is packed full of these rice looking things. I also noticed that the coporolite that I found down there has these things on them.

You can see them on this coprolite as well.

[Texas-Tunnel Rat]

This thing is packed full of these rice looking things. I also noticed that the coporolite that I found down there has these things on them.

You can see them on this coprolite as well.

Ok on that sample,

the "rice" objects I dont think are fuslinids (not due to morphs and temporal).

But that looks like a big piece of <CENSORED>.

Edited December 31, 2011 by Texas-Tunnel Rat

[Rockwood]

This thing is packed full of these rice looking things. I also noticed that the coporolite that I found down there has these things on them.

You can see them on this coprolite as well.

On; are you sure they're not in ?

[Carl]

Not sure I follow the question.

But arnt members of the Callianassid tend to have "fuzzier" consitancy?

[barefootgirl]

On; are you sure they're not in ?

Actually, they could be in it, rather than on it.

[Rockwood]

Actually, they could be in it, rather than on it.

The distinction may be pedantic, but it could matter if it's something that it's 'maker' ate, or something that was eating it.

[Carl]

Not pedantic at all. If it fell on these tiny things and they stuck to the outside that's entirely different than if they are what it's composed of.

The distinction may be pedantic, but it could matter if it's something that it's 'maker' ate, or something that was eating it.