Is that supposed to be a prehistoric mantis in sap?

Looks like one that has been set in acrylic or some other sort of plastic to me.

Idolomantis diabolica
Hymenopus coronatus
Phyllocrania paradoxa
Pseudocreobotra wahlbergii
Sphodromantis lineola
Alalomantis coxalis
Polyspilota aeruginosa
Hierodula Membranacea