Differences between Paratetragraptus graptolites

[Dan 1000]

G'day everyone!

 

I was reading through a paper on Bendigonian graptolites and found that their are four similar looking species of Paratetragraptus graptolites that can be found in Bendigo localities (P. approximatus, P. acclinans, P. thomassmithi and P. henrywilliamsi?).  I was wondering if anyone could shed some light on the characteristics that help separate and identify each of these species. @Tidgy's Dad?

 

Thanks,

Dan

[Tidgy's Dad]

This should do the trick :

http://www.publish.csiro.au/rs/pdf/RS17007

P. approximatus.

P. acclinans

P. cooperi

 

P. henrywilliamsi

P. thomassmithi

Yes, there are five. 

Good luck and I hope this helps.