OK Biology Experts...What the Heck are These???

[romeo-1]

Found these this afternoon on a saltwater beach in Atlantic Canada...any ideas?

 

[ticm]

Teeth

 

[romeo-1]

Teeth

That was my first thought but I'm not so sure...

 

[mamabear]

what kind?

 

[Silver Searcher]

Shark Teeth.

SS

 

[romeo-1]

what kind?

That's what I'm trying to figure out...

 

[romeo-1]

Shark Teeth.

SS

Is that a guess or a know? I would guess that as well but I would like to substantiate it.

 

[Silver Searcher]

Shark Teeth.

SS

Is that a guess or a know? I would guess that as well but I would like to substantiate it.

Not a guess, proberbly one of the sub-species, I don't know which one.

SS

 

[Silver Searcher]

Possibly Sand Tiger Shark

SS

 

[Tigger]

There's a thread on the fossil forum on shark's teeth right now, up near the top - if you post it there, there's a guy who should definitely ID it for you!

 

[captdan58]

maybe baracuda

 

[TerryC]

Scales... off the back of some kinda reptile... turtle? maybe? TTC

 

[romeo-1]

Scales... off the back of some kinda reptile... turtle? maybe? TTC

Is that a guess?

 

[timekiller]

They are scales for sure called placiod scales found on sharks, rays, skates,gars Etc.Not teeth.
Take Care,
Pete,
http://www.dailykos.com/story/2007/04/13/322954/-Marine-Life-Series:-Fish-Scales

 

[romeo-1]

They are scales for sure called placiod scales found on sharks, rays, skates,gars Etc.Not teeth.
Take Care,
Pete,
http://www.dailykos.com/story/2007/04/13/322954/-Marine-Life-Series:-Fish-Scales

That sounds good...now how big would the animal be to have scales this size? Nothing I would want to rub up against!

 

[timekiller]

Are there any sturgeon around that area.Just wondering?But for your question some species of fish grow those type large with out themself being very large others would have to be quite big for scales that size.

 

[timekiller]

Just to clear up about size,something like a skate would not have to be very large for that size scale,especially around the tail area.But something like most sharks I know of would never be that size just to big.They are made up of alot of smaller sized placiod scales even big ones.Skates come to me first just because I've slung truck loads of them off decks of trawlers fishing.Rays more like sharks I've seen it take four or five men to shove them over or out a stern ramp weighing 3-4 houndred pounds but with small scales kinda like sand paper.
http://www.marinebiodiversity.ca/skatesandrays/external anatomy/scales.htm

 

[romeo-1]

Yep...there are sturgeon in these waters...I hooked into a 6 footer once but didn't take the time to really look it over. Green Check coming as soon as I get back to my computer! Thanks TimeKiller!

 

[kuger]

Gar scales??