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bforams@mikrotax advanced search form

Use this form to search for taxa from particular time intervals or by morphology. To find a taxon by name alone it may be quicker to use the Taxonomic Search page, but this page is much more powerful and it is worth learning how to use it

1. SEARCH SCOPE AND OUTPUT
Modules:	Search outputSorting
2. TAXONOMIC CRITERIA
tax_rank:
Within taxon:
Citation includes:

3. AGE WINDOW TO SEARCH WITHIN
Current age-window is:

4. MORPHOLOGY & DEPTH

Final whorl chambers:

Wall composition:

Depth zone:

5. TAGS

test shape

chamber arrangement

surface features

aperture

test biconvex/lenticular, both sides convex (bulging outward)

test elongate, equidimensional in cross-section (e.g. rounded, square or triangular)

test broadly equidimensional / ball-shaped

chambers partially separated around the periphery of the test

test formed of just one chamber - or one main chamber plus a proloculus

test formed of a row of chambers arranged in a flat spiral

test with a network of ridges on the surface

peripheral thickening of the shell - outer edge sharp, thickened, or extended into a flange (aka carina)

aperture on the distal end of the final chamber.

aperture subdivided into multiple small holes or slits

test planoconvex, one side nearly flat the other convex (bulging outward)

chambers separated from each other, connected by tube or stolon

test formed of a row of chambers arranged in a conical spiral

test with ridges, striations or other linear 'ornament'

aperture elongate in direction of coiling

aperture within the apertural face of the final chamber, neither at its base nor at the shell margin.

aperture with or one or more 'teeth' or 'flaps' protruding into it

both sides of test nearly flat, discoidal if circular (but apllies also to e.g. palmate or triangular tests)

test formed of chambers differently arranged through ontogeny - e.g. planispiral -> trochospiral, or biserial -> uniserial

test formed of a double-row of chambers arranged in a spiral

test with pustules, tubercles, papillae, very short spines, or other mound-like 'ornament'

umbilicus of test covered by a bulla or similar feature.

aperture elongate perpendicular to direction of coiling

aperture on the inner margin of the last chamber, i.e. on the suture between the distal wall and preceding coil.

aperture raised above the surface of the chamber - e.g by a neck in uvigerina

NOTES ON USE OF THIS FORM

In all the text boxes you can use * & ? (or % and _) as wildcards within terms e.g. Ark*ales 197?
It would be possible to give results in different formats if users would like this (i.e. to have extra options beyond citations and images). Suggestions welcome!
There is also a separate page giving more information on the tags and metrics.