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umbones

umbones Sentence Examples

  • The young Brachiopod in all its species is protected by an embryonic shell called the " protegulum," which sometimes persists in the umbones of the adult shells but is more usually worn off.

  • In the entire animal the posterior end projects slightly more than the anterior from the region of the umbones.

  • a, b, right and left valves of the shell; c, d, the umbones or short arms of the lever; e, f, the long arms of the lever; g, the hinge; h, the ligament; i, the adductor muscle.

  • Solenopsidae.-Shell equivalve, greatly elongated, umbones very far forward.

  • Hinge pliodont, that is to say, it has numerous teeth on either side of the umbones and the teeth are perpendicular to the edge.

  • Philobryidae.-Shell thin, very inequilateral, anterior part atrophied, umbones projecting.

  • Trigonia; shell sub-triangular, umbones directed backwards.

  • Prasinidae.-Shell inequilateral, with anterior umbones and prominent anterior auricula; cardinal border arched..

  • Isocardiidae.-Mantle largely closed, pedal orifice small; gill-plates of equal size; shell globular, with prominent and coiled umbones.

  • Callocardiidae.-Siphons present; external gill-plate smaller than the internal; umbones not prominent.

  • 28.-Lateral view of a umbones and internal ligament.

  • Chamidae.-Shell with sub-equal valves and prominent umbones more or less spirally coiled; ligament external.

  • The young Brachiopod in all its species is protected by an embryonic shell called the " protegulum," which sometimes persists in the umbones of the adult shells but is more usually worn off.

  • - Inarticulate Brachiopoda, with the pedicle passing out between the umbones, the opening being shared by both valves.

  • In the entire animal the posterior end projects slightly more than the anterior from the region of the umbones.

  • a, b, right and left valves of the shell; c, d, the umbones or short arms of the lever; e, f, the long arms of the lever; g, the hinge; h, the ligament; i, the adductor muscle.

  • Solenopsidae.-Shell equivalve, greatly elongated, umbones very far forward.

  • Hinge pliodont, that is to say, it has numerous teeth on either side of the umbones and the teeth are perpendicular to the edge.

  • Philobryidae.-Shell thin, very inequilateral, anterior part atrophied, umbones projecting.

  • Trigonia; shell sub-triangular, umbones directed backwards.

  • Prasinidae.-Shell inequilateral, with anterior umbones and prominent anterior auricula; cardinal border arched..

  • Isocardiidae.-Mantle largely closed, pedal orifice small; gill-plates of equal size; shell globular, with prominent and coiled umbones.

  • Callocardiidae.-Siphons present; external gill-plate smaller than the internal; umbones not prominent.

  • 28.-Lateral view of a umbones and internal ligament.

  • Chamidae.-Shell with sub-equal valves and prominent umbones more or less spirally coiled; ligament external.

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