-
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...
-
Patrick M. Smith; John R. Paterson;
Glenn A.
Brock (2018). "Trilobites and
agnostids from the
Goyder Formation (Cambrian
Series 3, Guzhangian; Mindyallan)...
- box). The
Eodiscids probably descended from the
agnostids of
family Yukoniidae. Like
other agnostids, the body of
eodiscids is diminutive, the headshield...
-
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...
-
butterfly of the
family Papilionidae Battus (trilobite), a
synonym for
several agnostid trilobites, now ****igned to
other genera Battus (mythology), a
figure in...
- 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...
- 504 Ma
Western Utah, US A world-famous
locality known for its
prolific agnostid and
Elrathia kingii trilobite remains.
Varied soft
bodied organisms are...
-
years ago). The
family includes several important index fossils. Like all
agnostids,
ptychagnostids have
cephalons and
pygidia that are more or less uniform...
