Hard to say....doesn't look like much, except for the incised parallel lines.
Possible part of a core bore, from exploratory drilling.....I've found some similar, usually several more in the same area....but it looks too weathered....
There is a lot of artifacts up that way. Matter of fact where the old landing strip is on 282 near Rudy store I found my first tomahawk in that sandy soil near airfield. There is a enormous amount of artifacts near Rudy and mountainburg. Behind old silver bridge in between it and railroad bridge that field there has yielded many artifacts when it was once plowed. University even came then and documented a lot from a supposed settlement whenever sequoyah was around
Slingshot has hit upon the questionable find as he suspected. It is a fossil, not an artifact.
The general or common name for these is orthoceras/othelloceras. An early cephalopod.
These had a shell that grew in a straight shape and some grew to enormous size.
Yours appears to be one of the larger species but not the largest.
Jess B.
BTW: It appears that you used the wrong thread to post your find.
Central and S. America would place it Mexico and south. Not Arkansas.