Search results for: 'bone evolution paleozo à frill revêtue'

A pair of top quality, ray dermal scutes (knob type). These knobed ray dermal scutes are cool! F939 is a double specimen.

F940 (Right)             SIZE: 1/2"

A pair of top quality, ray dermal scutes (spiked type).  These spiked ray dermal scutes are scarce!    F935 is a double specimen.

F935 (Left)             SIZE: 1-1/16''

A pair of top quality, EXTRA LARGE ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F932 is a GEM specimen.    F932 Close Up

F931 (Left) SIZE: 1-3/8"

A pair of top quality, EXTRA LARGE ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F932 is a GEM specimen.    F932 Close Up

F932 (Right) SIZE: 1-1/4"

A very rare, LARGE, Top Quality Edestus heinrichi shark tooth, from Herrin, Illinois. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. A unique brown colored tooth - very unusual.. Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I07        SIZE:  3-3/8" w/ root  (1-5/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.

A very rare, LARGE, Top Quality Edestus heinrichi shark tooth, from Herrin, Illinois. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. A rare double crown section with lots of pyrite. Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I04        SIZE:  3" w/ root  (1-7/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.

A pair of top quality, ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F938 is an EXCELLENT barbed specimen.

F938 (Right)                  SIZE: 3/4"

A pair of top quality, ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F938 is an EXCELLENT barbed specimen.

F937 (Left)              SIZE: 1-1/16"

A very rare, EXTRA LARGE, Top Quality Edestus heinrichi shark tooth, from Herrin, Illinois. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. An extra large crown and root section. Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I05        SIZE:  5" w/ root  (2-5/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.

A pair of top quality, EXTRA LARGE ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F933 is an extra large, GEM barbed specimen.

F933 (Left) SIZE: 1-1/2"

A pair of top quality, EXTRA LARGE ray dermal scutes (barbed type).  These barbed ray dermal scutes are rare!    F933 is an extra large, GEM barbed specimen.

F934 (Right)                   SIZE: 1-3/16"

A very rare, Top Quality Edestus heinrichi shark tooth, from Herrin, Illinois. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. An incredible brown colored specimen - very unusual. Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I10        SIZE:  3-1/2" w/ root  (1-5/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.