-
Agnostidae is a
family of
Agnostida trilobites. Like all Agnostina, they were
eyeless and had only two
thoracic segments.
These trilobites inhabited benthic...
- families. As a group,
agnostids are isopygous,
meaning their pygidium is
similar in size and
shape to
their cephalon. Most
agnostid species were eyeless...
-
Moysiuk J,
Caron JB (January 2019). "Burgess
Shale fossils shed
light on the
agnostid problem". Proceedings.
Biological Sciences. 286 (1894): 20182314. doi:10...
- Han is a
monotypic genus of
agnostid trilobite,
whose sole
member is Han solo. The type
specimen of H. solo was
found in
marine strata of the
Arenig to...
- box). The
Eodiscids probably descended from the
agnostids of
family Yukoniidae. Like
other agnostids, the body of
eodiscids is diminutive, the headshield...
-
Geragnostus is a
genus of very
small agnostid trilobites whose fossils are
found Ordovician-aged
marine strata from Eurasia,
North America and Argentina...
- each
segment to
prevent over
rotation and
achieve a good seal. Even in an
agnostid, with only 2
articulating thoracic segments, the
process of enrollment...
-
Agnostus is a
genus of
agnostid trilobites,
belonging to the
family Agnostidae, that
lived during the late
Middle Cambrian –
Upper Cambrian (about 506...
-
years ago). The
family includes several important index fossils. Like all
agnostids,
ptychagnostids have
cephalons and
pygidia that are more or less uniform...
-
composite of the
cephalon and
pygidium of such an
agnostid,
without its two
thorax segments. However, no
agnostids are
known as
large as
about 1¾cm from the Middle...
