 Sclerodermatineae is a suborder of the fungal order Boletales . Circumscribed in 2002 by mycologists Manfred Binder and Andreas Bresinsky , it contains nine genera and about 80 species . The suborder contains a diverse assemblage fruit body morphologies , including boletes , gasteroid forms , earthstars ( genus Astraeus ) , and puffballs . Most species are ectomycorrhizal , although the ecological role of some species is not known with certainty . The suborder is thought to have originated in the late Cretaceous ( 145 – 66 Ma ) in Asia and North America , and the major genera diversified around the mid Cenozoic ( 66 – 0 Ma ) . 
 Sclerodermatineae <a href='drop_aux' title='1'><mark>is</mark></a>a suborder of the fungal order Boletales . Circumscribed in 2002 by mycologists Manfred Binder and Andreas Bresinsky , it <a href='uninflect' title='2'><mark>contains</mark></a> nine genera and about 80 species . The suborder <a href='uninflect' title='3'><mark>contains</mark></a> a diverse assemblage fruit body morphologies , including boletes , gasteroid forms , earthstars ( genus Astraeus ) , and puffballs . Most species <a href='drop_aux' title='4'><mark>are</mark></a>ectomycorrhizal , although the ecological role of some species is not known with <a href='negative_concord' title='5'><mark>certainty</mark></a> . The suborder is thought to <a href='been_done' title='6'><mark>have</mark></a> originated in the late Cretaceous ( 145 – 66 Ma ) in Asia and North America , and the major genera diversified around the mid Cenozoic ( 66 – 0 Ma ) . 
Sclerodermatineae a suborder of the fungal order Boletales . Circumscribed in 2002 by mycologists Manfred Binder and Andreas Bresinsky , it contain nine genera and about 80 species . The suborder contain a diverse assemblage fruit body morphologies , including boletes , gasteroid forms , earthstars ( genus Astraeus ) , and puffballs . Most species ectomycorrhizal , although da ecological role of some species ain't known with no certainty . The suborder is thought to done originated in the late Cretaceous ( 145 – 66 Ma ) in Asia and North America , and the major genera diversified around tdamid Cenozoic ( 66 – 0 Ma ) .