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Cretaceous Shark tooth ID

sharko69

By sharko69
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sharko69 Regular Member

sharko69

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Found this tooth in N. Texas. 8mm in length. Eagle ford, upper Cretaceous.

My guess would be small Archeolamna but unsure. Thanks for any help.

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Macrophyseter Regular Member

Macrophyseter

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Hm. As far as I know, Eagle Ford is a Cretaceous formation, usually Turonian and earlier? (May be wrong on the specific age).

I think that the tooth could be from a lower posterolateral Scapanorhynchus goblin shark, maybe texanus? Great tooth btw :dinothumb:

If you're a fossil nut from Palos Verdes, San Pedro, Redondo Beach, or Torrance, feel free to shoot me a PM!

 

 

Mosasaurus_hoffmannii_skull_schematic.png

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sixgill pete Regular Member

sixgill pete

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Looks like Archaeolamna kopingensis to me. Cusps are wrong for Scapanorhynchus.

Bulldozers and dirt Bulldozers and dirt
behind the trailer, my desert
Them red clay piles are heaven on earth
I get my rocks off, bulldozers and dirt

Patterson Hood; Drive-By Truckers

 

image.png.0c956e87cee523facebb6947cb34e842.png May 2016  MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160.png.b42a25e3438348310ba19ce6852f50c1.png May 2012 IPFOTM5.png.fb4f2a268e315c58c5980ed865b39e1f.png.1721b8912c45105152ac70b0ae8303c3.png.2b6263683ee32421d97e7fa481bd418a.pngAug 2013, May 2016, Apr 2020 VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png.af5065d0585e85f4accd8b291bf0cc2e.png.72a83362710033c9bdc8510be7454b66.png.9171036128e7f95de57b6a0f03c491da.png Oct 2022

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sharko69 Regular Member

sharko69

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2 hours ago, Macrophyseter said:

Hm. As far as I know, Eagle Ford is a Cretaceous formation, usually Turonian and earlier? (May be wrong on the specific age).

I think that the tooth could be from a lower posterolateral Scapanorhynchus goblin shark, maybe texanus? Great tooth btw :dinothumb:

Thanks. No real nutrient grove and no striations plus the cusps are too large for S. Texanus. 

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sharko69 Regular Member

sharko69

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On 10/22/2017 at 3:58 PM, sixgill pete said:

Looks like Archaeolamna kopingensis to me. Cusps are wrong for Scapanorhynchus.

Think you are right.

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