phragmoconen.

Brit.

/ˈfraɡməkəʊn/, U.S.

/ˈfræɡməˌkoʊn/

Forms: 1800s– phragmacone (rare), 1800s– phragmocone.

Origin: Formed within English, by compounding. Etymons: phragma n., -o- connective, cone n.¹

Etymology: < phragm- (in phragma n.) + -o- connective + cone n.¹In form phragmacone after phragma n.

Zoology.

The chambered part of the shell in some cephalopods; esp. the conical chambered internal shell of a belemnite.

ΘΚΠ

the world > life > biology > organism > fossil > [noun] > particular parts of

ostracite1601

horse-head1708

nucleus1734

orthoceras1734

orthoceratite1734

alveolus1747

volutite1802

strombite1811

helicite1828

turbinite1828

phragmocone1843

pro-ostracum1864

orthoceratoid1885

nema1901

1843 R. Owen Lect. Compar. Anat. Invertebr. Animals 333 The chambered cone itself..is lodged in a conical cavity or alveolus. [Note] The term alveolus has been given improperly to the contents of the socket, viz. to the ‘phragmocone’.

1844 R. Owen in Philos. Trans. (Royal Soc.) 134 66 No infiltration of mineral matter into its cavity, or into the chambers of the phragmocone.

1847 Nat. Encycl. I. 141 [Article Actinocamax] The species..had no true alveolar cavity or phragmacone.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 457 The chambered shell..known in Belemnitidae as ‘phragmacone’.

1944 Amer. Midland Naturalist 32 757 Orthoceras liassicus is a phragmocone such as might belong to a primitive belemnite rather than to a nautiloid.

1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) iv. 120 The phragmocone when found alone is apt to be mistaken for an Orthocone nautiloid with a marginal siphuncle.

1990 C. Pellant Rocks, Minerals & Fossils 122 The phragmacone is less common as a fossil. This is the conical chambered shell, the posterior end of which lies within the end of the guard.

Derivatives

phragmoˈconic adj. rare

ΚΠ

1844 Philos. Trans. (Royal Soc.) 134 70 The yielding texture of the phragmoconic capsule has commonly caused it to fall into longitudinal folds when compressed.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	phragmocone
释义	phragmoconen. Brit. /ˈfraɡməkəʊn/, U.S. /ˈfræɡməˌkoʊn/ Forms: 1800s– phragmacone (rare), 1800s– phragmocone. Origin: Formed within English, by compounding. Etymons: phragma n., -o- connective, cone n.¹ Etymology: < phragm- (in phragma n.) + -o- connective + cone n.¹In form phragmacone after phragma n. Zoology. The chambered part of the shell in some cephalopods; esp. the conical chambered internal shell of a belemnite. ΘΚΠ the world > life > biology > organism > fossil > [noun] > particular parts of ostracite1601 horse-head1708 nucleus1734 orthoceras1734 orthoceratite1734 alveolus1747 volutite1802 strombite1811 helicite1828 turbinite1828 phragmocone1843 pro-ostracum1864 orthoceratoid1885 nema1901 1843 R. Owen Lect. Compar. Anat. Invertebr. Animals 333 The chambered cone itself..is lodged in a conical cavity or alveolus. [Note] The term alveolus has been given improperly to the contents of the socket, viz. to the ‘phragmocone’. 1844 R. Owen in Philos. Trans. (Royal Soc.) 134 66 No infiltration of mineral matter into its cavity, or into the chambers of the phragmocone. 1847 Nat. Encycl. I. 141 [Article Actinocamax] The species..had no true alveolar cavity or phragmacone. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 457 The chambered shell..known in Belemnitidae as ‘phragmacone’. 1944 Amer. Midland Naturalist 32 757 Orthoceras liassicus is a phragmocone such as might belong to a primitive belemnite rather than to a nautiloid. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) iv. 120 The phragmocone when found alone is apt to be mistaken for an Orthocone nautiloid with a marginal siphuncle. 1990 C. Pellant Rocks, Minerals & Fossils 122 The phragmacone is less common as a fossil. This is the conical chambered shell, the posterior end of which lies within the end of the guard. Derivatives phragmoˈconic adj. rare ΚΠ 1844 Philos. Trans. (Royal Soc.) 134 70 The yielding texture of the phragmoconic capsule has commonly caused it to fall into longitudinal folds when compressed. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1843
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