- A
chordate (/ˈkɔːrdeɪt/ KOR-dayt) is a
bilaterian animal belonging to the
phylum Chordata (/kɔːrˈdeɪtə/ kor-DAY-tə). All
chordates possess, at some point...
-
pineal gland is
present in
almost all vertebrates, but is
absent in
protochordates in
which there is a
simple pineal homologue. The hagfish,
archaic vertebrates...
- covering, a cuticle,
which is
characteristic of
invertebrates and some
protochordates. A
reinterpretation in 2024
found evidence of the gut canal, dorsal...
- Chichester). Zeng, L.; Swalla, B. J. (2005). "Molecular
phylogeny of the
protochordates:
chordate evolution". Can. J. Zool. 83: 24–33. doi:10.1139/z05-010....
-
present in the
pharyngeal pouches of
protochordates as they are in fishes;
rather the [pharangeal]
slits of
protochordates are part of
their feeding mechanism...
- proto-chordates.
Pikaia has been
heavily promoted as the
oldest fossil protochordate."
Richard Dawkins 2004 The Ancestor's Tale p. 289, ISBN 0-618-00583-8...
-
April 2017. Franchi, Nicola; Ballarin,
Loriano (2017). "Immunity in
Protochordates: The
Tunicate Perspective".
Frontiers in Immunology. 8: 674. doi:10...
- Ritchie,
Alexander (1985). "Ainiktozoon
loganense Scourfield, a
protochordate from the
Silurian of Scotland". Alcheringa. 9 (2): 137. Bibcode:1985Alch...
- Ritchie,
Alexander (1985). "Ainiktozoon
loganense Scourfield, a
protochordate? from the
Silurian of Scotland". Alcheringa. 9 (2): 137. Bibcode:1985Alch...
- the
presence of a notochord, a
defining feature of all
chordates from
protochordates to mammals. However, a
reanalysis in 2012
indicated that the hollow...
