cryptospores:

type collection

On this page are included images of holotypes, isotypes and related examples for a number of cryptospore taxa. This work is in progress as of May 2018.

Adinosporus voluminosus Strother 2016

holotype C

isotype

isotype

isotype

Rogersville Sh

GW81-292_A3

Bright Angel Sh

GC-9

Bright Angel Sh

CG98-6

isotype

Cryptotetras mordasis Strother, Traverse & Vecoli 2015

isotype

Grododowon orthogonalis Strother 2017

isotype

Tetrahedraletes medinensis Strother & Traverse 1979

holotype (scale bar 10 µm)

Note the size. The holotype is pretty large: 54 to 58 µm in over all diameter. Each spore of the tetrads is 47 to 50 µm in diameter. Sporoderm is very dense, surface is very smooth (laevigate).

Nodospora oyleri Strother & Traverse 1979

isotype

Nodospora is not generally used as a taxon name, but in this case the contact thickenings do not delineate the equatorial margin of a proximal/distal wall combination. Instead they represent a quadrate partitioning of a single vesicle. This is apparent because the wall density does not diminish as light travels through the central portion of the specimen. If both proximal and distal walls were present, this portion of the tetrad would appear to darken.

more images of Tetrahedraletes