-
Galeaspida (from Latin, 'Helmet shields') is an
extinct taxon of
jawless marine and
freshwater fish. The name is
derived from galea, the
Latin word for...
- Junqing; Gai, Zhikun; Zhu, Min (2005). "A NEW
SPECIES OF
MACROTHYRASPIS (
GALEASPIDA, AGNATHA) FROM WENSHAN, YUNNAN, CHINA".
Vertebrata PalAsiatica. 43 (4)...
- †
Galeaspida...
-
include only
groups more
clearly related to the Osteostraci, such as
Galeaspida and Pituriaspida, that were
largely unknown in the 1920s. Some reference...
- †Conodonta (conodonts)
class †Cephalaspidomorphi (early
jawless fish)
Clade †
Galeaspida Clade †Pituriaspida
Clade †Osteostraci
Infraphylum Gnathostomata (jawed...
- and Iran. It was
named as a new
genus in 1975. In 2025, a
member of the
Galeaspida was
given the same
genus name ("Deanaspis" longpingi), with a replacement...
- all
ostracoderms and the gnathostomes.
Other ostracoderms, such as the
Galeaspida are now
known to have a
paired olfactory organ.
Current phylogenetic analysis...
-
braincase with
those of
jawless fish, such as the
Osteostraci and the
Galeaspida,
strongly suggest that B. stensioi, and also the antiarchs, are basal...
-
Galeaspida † "Cephalaspidomorphi" (paraphyletic)...
-
periods to the
present day. †
Galeaspida (extinct)
Galeaspida ('helmet-shields') have m****ive bone
shield on the head.
Galeaspida lived in shallow,
fresh water...
