-
occipital ring. In
Chelediscus and
Tannudiscus the
occipital ring is
entirely obliterated as in the
Agnostina suborder.
Tannudiscus has some
other characters it...
- Weymouthiidae,
Mallagnostus belongs to a
clade that
further includes Tannudiscus,
Jinghediscus and the Agnostina. M.
desideratus Walcott, 1890, is from...
- Chelediscus,
Tannudiscus and Jinghediscus. The
trend in the
Weymouthiidae to
reduce the
occipital ring is
carried furthest in Chelediscus,
Tannudiscus and the...
-
Suite Oodiscus 1966
Semadiscus 1978
Stigmadiscus 1966
Parapagetia 1964
Tannudiscus 1959
Purley Shale Formation Chelediscus 1966
Bathydiscus 1966 Cobboldites...
-
Swedish Lapland and the
lower to
middle Brigus Formation (Hupeolenus Zone;
Tannudiscus bal**** Subzone) at Cape St Mary's,
Newfoundland (Fletcher, 2003). C...
- Hebediscidae, that
themselves gave rise to the Weymouthiidae,
which contain Tannudiscus, the
probable ancestor of the Agnostina.
Second the Yukoniidae, who sprouted...
-
Tangbailaspis Tangjiaella Tangshihlingia Tangwangzhaia Taniaspidella Tank****a
Tannudiscus Tanybregma Taoyuania (=Batyraspis)
Tapinocalymene Tarijactinoides (=Bolivianaspis)...
- Hebediscidae, that
themselves gave rise to the Weymouthiidae,
which contain Tannudiscus, the
probable ancestor of the
peronopsid genus Archaeagnostus, the earliest...
- (Archaeagnostus)
probably descended directly from the
Eodiscoid genus Tannudiscus (Weymouthiidae). Some
scholars do not
consider the
Agnostina true trilobites...
