siphuncle In A Sentence
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- The siphuncle is ventral, near the outer, externally convex curvature.
- The siphuncle swelling at the apex is subtriangular in longitudinal profile.
- The siphuncle is broadly expanded, and in some actinosiphonate.
- Siphuncle segments have short septal necks and thick connecting rings.
- The siphuncle is subcentral . " Juvavionautilus " comes from Europe and Timur.
- The siphuncle is central to subcentral with moderately to strongly inflated segments.
- The siphuncle is tubular, typically found near the venter.
- An exception to the usual ventral position is found in the Shideleroceratidae, in which the siphuncle is central or subcentral.
- Lamellorthoceratid shells are straight or slightly endogastric with a slender, cylindrical subcentral orthochoanitic siphuncle, free or organic deposits.
- Overall ellesmerocerids are characterized by moderate endogastric curvature, and a marginal siphuncle with irregular diaphragms, ellipochoanitic septal necks, and thick complex connecting rings.
- ""'Foerstellites " "'is an Ordovician cephalopod genus from North America, belonging to the family Endoceratidae, in which the siphuncle takes up the entire apex.
- Siphuncle segments are short and well expanded into the chambers.
- The tubular, subventral siphuncle separates " Chidleyenoceras " from the Apsidoceratidae ( Sweet, 1964 ) where it had been included and puts it well into the Plectoceratidae ( Flower, 1984 ).
- The siphuncle is slightly ventral of the center . (, 1964 K427).
- The siphuncle is subcentral . " Oxynautilus " has been found in Europe in the Alps and in California in North America.
- Some poterioceratid genera have actinosiphonate structures or annular deposits within the siphuncle.
- It is characterized by a dorsal siphuncle that runs along the inside of the whorls, unusual for ammonoids.
- Variations include annulate orthoconic longicones, exogastric breviconic cyrtocones, forms with thin connecting rings, and those with subcentral siphuncle.
- The siphuncle is prochoanitic, with septal necks projecting forward.
- The siphuncle is central with moderately expanded, spindle-like segmeents.
- Of the five described species the siphuncle wall and phragmocone are known only from the genotype " Williamsoceras adnatum ".
- Siphuncle segments aare expanded, connecting rings thin.
- The siphuncle is small, tubular, and subcentral . ( 1964).
- The siphuncle is large, displaced slightly ventral from the center.
- Whorl sections are subrectangular, sutures sinuous, the siphuncle subcentral.
- Discosorids are nautiloid cephalopods generally characterized by inflated siphuncle segments that expand into the chambers and by connecting rings that vary in composition along their length.
- The siphuncle in ventral, nummuloidal, with discrete, irregular, actinosiphonate deposits at the septal foramina.
- The ventral siphuncle is small, with oblong segments.
- The siphuncular rods, which lie along the lower ( ventral ) side of the siphuncle interiors show thin, slightly undulating, growth lamellae in vertical longitudinal section, a somewhat unique feature.
- The shell of " Eburoceras " is long and narrow, curved in a broad arc of near constant curvature, interpreted as endogastric, assuming the small siphuncle on the inner margin to be ventral.
- The subcentral siphuncle contains vesicular deposits and a central tube.
- The siphuncle of " Oonoceras " is cyrtochoanitic.
- The siphuncle is small, subcentral, and orthochoantic.
- The siphuncle is small and subcentral . " Pseudocenoceras " is found in the Crimea and in Libya.
- The siphuncle is located half way between the shell axis and the venter, is thin walled and tubular with short, orthochoanitic septal necks and segments that are only slightly inflated.
- "Grimsbyoceras ", named by Foerste in 1926, has a depressed, breviconic shell, with an elliptical transverse aperture, without a hyponomic sinus, and a small, subventral siphuncle.
Similar words: Siphonophore, Sipp, Siphoneae, Sipunculid, Sipsey, Siphon Off, Sippara, Siphre, Siphonales, Siphonata, Sippy, Sipapu, Siper, Siphonic, Siphoned, Siphon, Sipping, Siphonophores, Sipunculus, Sipunculoids