Look Into My Eye... Trilobite Eye

[Caleb]

I've wanted to start a topic showing the varieties of trilobite eyes since I did one about Hypostomes but I lacked the ability/camara to do so well. With my new toy, I can now photograph small things much more easily. If you have photos of other trilobite eyes, feel free to add them to the thread.

I'll start with my Devonian Moroccan bugs first, since I don't have many.

Acastoides

Coltraneia oufatensis

Cornuproetus cornutus

Moraccanites malladoides

Paralejurus hamlagdadicus

Thysanopeltis speciosa

[Caleb]

And here are a couple North American bugs:

Dalmentites limulurus

Devonian

The Caleb Quarry, New York

Denella sp.

Denella is the closest match to this bug I have been able to find. It's an un-described Pterygometopid, weather or not it belongs to the genus Denella is to be determined.

Maquoketa Formation

Upper Ordovician, Richmondian

Southeast Minnesota

Dolichoharpes reticulata

Platteville Formation

Middle Ordovician, Blackriverian

Southwest Wisconsin

Eldredgeops norwoodensis

This species differs from the others in a few ways, but one of the key features is fewer eye facets.

Little Cedar Formation

Johnson County, Iowa, near where the MAPSshow will be this year!

[Missourian]

The eyes have hills!

[smokeriderdon]

OK, here is a Phacops rana from West By God...

[Caleb]

Very cool, love the preservation. Phacopid eyes are among my favorite.

[piranha]

The reigning champ of schizochroal lens counts is Fenestraspis with approximately 900 lenses arranged in 50 vertical files of up to 22 lenses per file.

Fenestraspis amauta

Lower Devonian (Pragian–Emsian)

Belén Formation - Chacoma, Bolivia

[Ludwigia]

Not the best of shots, but at least it gives an idea. Nyterops hollandi (Van Viersen 2007) from the Eifelian in Belgium.

[PRK]

Ouch, I've forgotten the name. It's the common from morocco.-------ok thanks to piranha the name is Coltraneia sp. the very large eyes on this trilobite were evolved for 360degree vision. movement could be seen from all angles

Edited December 25, 2012 by PRK

[Caleb]

Ouch, I've forgotten the name. It's the common from morocco. ANYBODY?

That one looks to be a Coltraneia, I love those bugs and their large eyes.

[PRK]

Hi calib, thanks. Although that is not the name I remember. That certainly could be possible.. Have they changed recently?

[piranha]

Hi calib, thanks. Although that is not the name I remember. That certainly could be possible.. Have they changed recently?

Treveropyge is the old name

[PRK]

Ahhhhh! Yes, that's it !!! Coltraneia it is then. Thanks caleb AND piranha

Edited December 21, 2012 by PRK

[Missourian]

Ameura missouriensis

Westerville Limestone, Pennsylvanian

Jackson County, Missouri

[Herb]

A few Devonian Phacops from Sylvania, Ohio.

[Caleb]

A few Devonian Phacops from Sylvania, Ohio.

Silica Shale trilobites are amazing!

Edited December 24, 2012 by Caleb

[Caleb]

Here is an uncommon bug, mostly we only find the hypostomes..

Hypodicranotus sp.

Platteville Formation, Mifflin member

Middle Ordovician, Blackriverian

Southwest Wisconsin