identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03BDEA64330FC621FCEEFD86E8E4FC10.text	03BDEA64330FC621FCEEFD86E8E4FC10.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Beloptera de Blainville 1825	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Genus  Beloptera de Blainville, 1825</p>
            <p> Type species:  Beloptera belemnoidea de Blainville, 1825 ; by original designation. </p>
            <p>Diagnosis: Chamber length-to-diameter ratio &lt;0.2, except earliest (postembryonic–juvenile) chambers; postalveolar sheath oriented towards venter, length of club variable, lateral extensions well developed, winglike, oriented towards venter, ventral ridge moderately developed (after Fuchs, 2023: p. 8–9).</p>
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	https://treatment.plazi.org/id/03BDEA64330FC621FCEEFD86E8E4FC10	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Dernov, Vitaly	Dernov, Vitaly (2024): Beloptera Longa Naef, 1922 (Cephalopoda: Coleoidea) From The Late Eocene (Palaeogene) Of Ukraine. Acta Palaeontologica Romaniae 20 (2): 3-10, DOI: 10.35463/j.apr.2024.02.01, URL: https://doi.org/10.35463/j.apr.2024.02.01
03BDEA64330FC623FC11FC6AEF2FF795.text	03BDEA64330FC623FC11FC6AEF2FF795.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Beloptera longa NAEF 1922	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Beloptera longa Naef, 1922</p>
            <p>Fig. 4a–c</p>
            <p>Synonymy</p>
            <p> 1877  Beloptera belemnitoidea de Blainville, 1825 – Edwards &amp; Wood, p. 36, pl. 2, fig. 1, Bartonian of England. </p>
            <p> 1922  Beloptera longa sp. nov. – Naef, p. 57, text-figs 18a–g, 19, Bartonian of England. </p>
            <p>Holotype: Not defined.</p>
            <p> Diagnosis:  Beloptera with an elongate guard-like sheath that is slightly curved ventrally and with semicircular in outline lateral expansions. The dorsal surface is roof-like, almost smooth with radial grooves on the rostrum; the ventral surface is concave and almost smooth (radial grooves are on the rostrum); the rostrum is nearly triangular in cross-section. </p>
            <p>Material: One moderately preserved specimen (IGS-DYM 01/05) from the Priabonian Mandrykivka Beds of the Rybalsky Quarry, Dnipro.</p>
            <p>Description: The specimen IGS-DYM01/05 is a moderately preserved elongated (L 2 /W 2 = 2.44, see Table 1), slightly curved ventrally 26.4-mm-long guard-like sheath with supposedly semicircular in outline lateral expansions inclined towards the venter and gives a convex form to the dorsal surface and a corresponding concavity to the venter. The lateral expansions are thick at the articulation area of the rostrum and sheath and become gradually thinner to the periphery. The dorsal surface is roof-like with a raised narrow medial zone and steep slopes gradually turning into lateral expansions. The rostrum is nearly triangular in cross-section and gradually widens; its apex is rounded in the ventral aspect and slightly pointed in the lateral aspect; the rostrum is slightly curved ventrally and the guard-like sheath is somewhat arched longitudinally. The ventral surface is almost smooth with very fine radial grooves on the rostrum. The dorsal surface is almost smooth with very fine radial grooves are on the rostrum.</p>
            <p> dimorphism of  B. belemnoidea specimens. However,  B. belemnoidea significantly differs from  B. curta in the longer and less massive rostrum, as well as an elliptical outline guard-like sheath. </p>
            <p> It is rather difficult to compare  B. longa with  B. konincki Briart and Cornet, 1880 , as I know this species is described from not well preserved material only in Briart &amp; Cornet (1880); images of this species in this work are not of very high quality. Probably, in contrast to  B. longa ,  B. konincki has a rather short guard-like sheath with a more pointed, relatively short rostrum and radial and concentric ornamentation of the ventral surface. </p>
            <p>Occurrence: Bartonian of England, Priabonian of Ukraine.</p>
            <p>Specimen L 1 L 2 W 1 W 2 L 2 /W 2 IGS-</p>
            <p>13.6 26.4 6.7 10.8 2.44 DYM01/05</p>
            <p> Remarks: The described specimen does not differ significantly from  Beloptera longa figured by Edwards &amp; Wood (1877: pl. 2, fig. 1) and Naef (1922: text-figs 18a– g, 19).  B. longa differs from the most morphologically similar species  B. belemnoidea de Blainville, 1825 in the following morphological features: (1) the very convex smooth dorsal surface; (2) the greatly curved ventrally guard-like sheath; (3) the nearly triangular in cross-section rostrum; (4) the slightly pointed in the lateral aspect rostrum. </p>
            <p> B. longa differs from  B. curta (Cossmann, 1896) in a much longer rostrum (relative to the total length of the guard-like sheath) and a more elongated guard-like sheath. In addition, the sheath of  B. curta is rather strongly compressed in the dorsal-ventral direction. Vincent (1901) considered  B. curta to be the ”anomaly” of  B. belemnoidea , probably referring to the manifestation of intraspecific, probably sexual, </p>
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	https://treatment.plazi.org/id/03BDEA64330FC623FC11FC6AEF2FF795	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Dernov, Vitaly	Dernov, Vitaly (2024): Beloptera Longa Naef, 1922 (Cephalopoda: Coleoidea) From The Late Eocene (Palaeogene) Of Ukraine. Acta Palaeontologica Romaniae 20 (2): 3-10, DOI: 10.35463/j.apr.2024.02.01, URL: https://doi.org/10.35463/j.apr.2024.02.01
03BDEA64330DC625FC65FD43ECD9FF7E.text	03BDEA64330DC625FC65FD43ECD9FF7E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Beloptera longa NAEF 1922	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Beloptera aff. longa Naef, 1922</p>
            <p>Fig. 4d–k</p>
            <p>Material: Three moderately preserved specimens (IGS-DYM 01/06 to IGS-DYM 01/08) from the Priabonian Mandrykivka Beds of the Rybalsky Quarry, Dnipro.</p>
            <p>Description: The specimen IGS-DYM01/06 (Fig. 4d–f) is a moderately preserved elongated (L 2 /W 2 = 2.51; see Table 2) guard-like sheath, which is slightly curved ventrally; it is 34.6-mm-long with semicircular in outline lateral expansions inclined towards the venter, which gives a convex form to the dorsal surface and a corresponding concavity to the venter. The lateral expansions are thick at the contact area of the rostrum and sheath and become gradually thinner to the periphery. The dorsal surface is roof-like with a raised narrow medial zone and steep slopes gradually turning into lateral expansions. The rostrum is nearly triangular in cross-section and gradually widens; its apex is rounded; the rostrum is slightly curved ventrally and the guard-like sheath is somewhat arched longitudinally. The ventral surface is covered with very small elongate pits at the base of the lateral expansions and very fine radial grooves on the rostrum. The dorsal surface is almost smooth with very fine radial grooves on the rostrum and front zones of the lateral expansions.</p>
            <p>Specimen IGS-DYM01/07 (Figs. 4 g-i) is a moderately preserved elongated (L2/W2 = 2.0) guard-like sheath that is slightly curved ventrally; it measures 21.4 mm long with lateral expansions that are inclined towards the ventral surface, which causes a convex shape towards the dorsal surface and a corresponding concavity towards the ventral surface. The lateral expansions are thick in the area of contact between the rostrum and the sheath and gradually thinning towards periphery. The dorsal surface is roof-like with a raised narrow medial zone and steep slopes gradually turning into the lateral expansions. The rostrum is nearly triangular in cross-section and gradually widens; its apex is rounded in the ventral aspect and slightly pointed in the lateral aspect; the rostrum is slightly curved ventrally and the guard-like sheath is somewhat arched longitudinally. The ventral surface is covered with very small elongate pits at the base of the lateral expansions and very fine radial grooves on the rostrum. Most of the dorsal surface is smooth; only shallow marks of blood vessels occur on the preserved lateral expansion and very fine radial grooves are on the rostrum.</p>
            <p>The specimen IGS-DYM01/08 (Fig. 4j, k) is represented by a fragment of a rostrum that is nearly triangular in cross-section with a part of the lateral expansions. This poorly preserved fossil is indistinguishable from the specimen IGS-DYM01/06.</p>
            <p> Remarks: The specimen IGS-DYM01/06 described above is better preserved than the single specimen of  Beloptera cf. longa (IGS NASU-15/02) described in the work of Dernov &amp; Demianov (2023: Fig. 6A–E). In particular, IGS-DYM01/06 shows that, unlike  B. belemnoidea , the lateral expansions of  B. aff. longa have semicircular margins, while in  B. belemnoidea they are wavy (cf. Fig. 3a in this work). In contrast to  B. cf. longa (IGS NASU-15/02), the specimen IGS-DYM01/06 is less ventrally curved and bears thin radial grooves on the anterior part of the dorsal surface of the lateral expansions. </p>
            <p> The described specimens differ from the specimens of  B. longa , figured by Edwards &amp; Wood (1877: pl. 2, fig. 1), Naef (1922: figs 18a–g) and in Fig. 4a–c in this paper by a less massive rostrum.  B. aff. longa differs from the most morphologically similar species  B. belemnoidea in a very convex smooth dorsal surface, a greatly curved ventrally guard-like sheath and the nearly triangular in cross-section rostrum. </p>
            <p>Occurrence: Bartonian of England, Priabonian of Ukraine.</p>
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	https://treatment.plazi.org/id/03BDEA64330DC625FC65FD43ECD9FF7E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Dernov, Vitaly	Dernov, Vitaly (2024): Beloptera Longa Naef, 1922 (Cephalopoda: Coleoidea) From The Late Eocene (Palaeogene) Of Ukraine. Acta Palaeontologica Romaniae 20 (2): 3-10, DOI: 10.35463/j.apr.2024.02.01, URL: https://doi.org/10.35463/j.apr.2024.02.01
