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Pachy dome spike?


patrickhudson

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patrickhudson

Going through some chunkosaurus boxes tonight and found this piece that looked fairly pachy right off the bat.  
Maybe it’s a stretch because I’m still a little depressed that I traded away the pachy dome we found earlier in the year, but this piece sure looks like a worn spike to me.  Am I right or am I wrong?  Only the one angle shows the “spike” but I wanted to show all angles. The backside looks very pachy as well.  
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thanks guys 
judith river formation of Montana - milk river 

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Not sure what you have here.  Squamosal spikes usually have an oval cross section at the base as well as the other nodes you see on the skull of the different growth stages of Pachycephalosaurus.   Your specimen looks to flattish to be one.  Having said that very little is published on Pachycephalosaurids in the JRF and what I've seen none have big spikes or nodes like what you see from the the Hell Creek/Lance Fm Pachycephalosaurus who is a big show-off.

 

JRF would more typical of these images that I just pulled off the web.  These are from Alberta.

Screenshot_20201119-031020_Chrome.thumb.jpg.199eddafebc83f16d4b0ea68a330e1f5.jpg

 

Screenshot_20201119-030513_Chrome.thumb.jpg.0a588feac797754f9a0bcd2dce0ff0fe.jpg

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patrickhudson
4 hours ago, Troodon said:

Not sure what you have here.  Squamosal spikes usually have an oval cross section at the base as well as the other nodes you see on the skull of the different growth stages of Pachycephalosaurus.   Your specimen looks to flattish to be one.  Having said that very little is published on Pachycephalosaurids in the JRF and what I've seen none have big spikes or nodes like what you see from the the Hell Creek/Lance Fm Pachycephalosaurus who is a big show-off.

 

JRF would more typical of these images that I just pulled off the web.  These are from Alberta.

Screenshot_20201119-031020_Chrome.thumb.jpg.199eddafebc83f16d4b0ea68a330e1f5.jpg

 

Screenshot_20201119-030513_Chrome.thumb.jpg.0a588feac797754f9a0bcd2dce0ff0fe.jpg

Hmmmm.  There are just a couple spots at the base that have the smaller nodes.  Tougher to tell on the pics - but a bit more smooth and defined in hand.  A bit less worn than adjacent areas.   
thanks for the help 

 

 

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Really cannot get a good view of that item.  Overall I dont believe its a spike but could be a part of the skull with that circled item being a node which would fit more with what has been found in the JRF

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patrickhudson
1 hour ago, Troodon said:

Really cannot get a good view of that item.  Overall I dont believe its a spike but could be a part of the skull with that circled item being a node which would fit more with what has been found in the JRF

I definitely trust you more than an online Dino seller:  I had seen this spike for sale online and it looked fairly similar, just mite worn - which had sparked my suspicion.  
But again - I still lick half the stuff I pick up just to make sure :) 
 

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Where from and do you have a photo of the base. Other than the triangular shape of this view its very different 

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