A fifth difference among purebred and hybrid larvae is in the angle of deflection of the gill slits
to the right or left of the midline.
Answers: nouns: gill slits
, cartilage, lateral lines, prey; verbs: swim, sleep, attack, swallow; adjectives: keen, shallow, endangered, extinct
Some sharks can pump water through their gill slits
, allowing them to stay motionless.
The gill slit
skeletal bars are commonly opaque, but in 1 of every 10 animals, they are pigmented black.
It's good-bye to fins and gill slits
, welcome lungs and hair.
They can grow up to 6 feet in length, have large heads, gill slits
and wide mouths.
Color pattern dominated by eight large dark brown saddle blotches, first on occiput, constricted medially, leading obliquely to blotch below eye; second above pectoral fins, followed anteroventrally by two dark blotches, lower over gill slits
, followed by two blotches on dorsal surface connecting obliquely to two dark blotches on side, one below and extending into each dorsal fin and two across caudal fin; terminal lobe of caudal fin with irregular dark blotch; scattered small white spots present over body, most conspicuous within and at edges of large dark brown blotches.
Among deuterostomes, gill slits
occur in fossil echinoderms (Jeffries, 1986), hemichordates, and chordates.
Cameron said: "Work from my lab has shown that enteropneusts filter feed using a pharynx perforated with gill slits
, just like the invertebrate chordates.
Gill openings elongate S-shaped, forming weakly fringed lobe laterally; length of first gill slit
1.13 (1.22) times length of fifth gill slit
, 2.91 (3.35) times in mouth width; distance between first gill slits
2.07 (2.29) times internarial space, 0.43 (0.45) times ventral head length; distance between fifth gill slits
1.16 (1.21) times internasal distance, 0.24 (0.24) times ventral head length.
Chordates share several characteristic features including a notochord, a dorsal hollow nerve cord, and pharyngeal gill slits
. In addition, lower chordates (including tunicates, amphioxus, and lampreys) share an endostyle.
cerdale holotype term embryo immature Total length cm 55.7 27.7 101.0 Tip of snout to 1st Dorsal origin 34.4 35.0 30.7 2nd Dorsal origin 65.5 63.9 64.6 Upper caudal origin 75.4 74.4 75.8 Lower caudal origin 73.4 72.9 75.4 Anal fin origin 60.7 61.4 64.6 Pelvic fin origin 48.5 48.7 50.1 Pectoral fin origin 24.2 27.4 23.2 Gill slit
#1 (top) 29.7 23.5 19.0 Gill slit
#5 (top) 25.6 28.5 24.2 Eye origin 8.0 10.5 7.0 Mouth origin 8.6 11.2 8.2 External naris (lateral 4.8 6.5 3.3 end) First dorsal fin Anterior margin 11.3 11.6 14.7 Height 8.6 7.6 10.4 Base length 9.0 8.3 10.7 Free inner margin 4.7 4.7 5.6 Dist.