Paleoovoididae Vasilenko, 2005
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publication ID |
https://doi.org/10.1186/s13358-024-00339-0 |
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persistent identifier |
https://treatment.plazi.org/id/F03F87B7-DD13-FFB3-82D6-FAA29FCB7783 |
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treatment provided by |
Felipe |
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scientific name |
Paleoovoididae Vasilenko, 2005 |
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Family Paleoovoididae Vasilenko, 2005
Ichnogenus Paleoovoidus Vasilenko emend. Sarzetti et al., 2009
2005 Paleoovoidus Vasilenko; Vasilenko, pp. 629 & 631.
2009 Paleoovoidus Vasilenko emend.; Sarzetti et al., p. 437.
For additional synonymy see Sarzetti et al., 2009, pp. 433 & 437.
Type species: P. rectus Vasilenko emend. Sarzetti et al., 2009, p. 437 .
Paleoovoidus pyriformis ichnosp. nov.
urn:lsid:zoobank.org:pub:DAF819A0-0629-4D5C-ACDD-08106EE592C5
Fig. 2 View Fig : 3; Fig. 3 View Fig : a, b; Fig. 4 View Fig : 1
Diagnosis: Teardrop-shaped, elliptical, opposite scars arranged in two linear, parallel, discontinuous (preservation artefact?) chains (34.0–65.0 mm long, 1.8–3.0 mm wide), one along each side of the midrib on the adaxial side of the leaves; lesions (2.0– 4.3 mm long, 1.7–3.0 mm wide, 0.4–3.0 mm apart), featuring a mostly rounded end and an opposite usually pointed tip, and an almost straight proximal side parallel with or diagonal (32–47°) to the midrib and a distal curved margin.
Holotype /Type locality: HS-52, Fig. 3 View Fig : b, Fig. 4 View Fig : 1; Teardrop-shaped, elliptical, ± bilateral marks arranged in two linear, parallel, irregularly spaced (preservation artefact?) chains (34.0–37.0 mm long, 1.8–3.0 mm wide), one along each side of the midrib on the adaxial side of the leaf, in the left chain some scars are partially cover the midrib; lesions (2.0– 4.3 mm long, 1.7–3.0 mm wide, 0.5–3.0 mm apart), with a mostly rounded end and an opposite usually pointed tip, and an almost straight proximal side parallel with or diagonal (up to 47°) to the midrib and another distal curved margin; western Alborz Ranges, north of Rudbar , Shemshak Formation ( Lower Jurassic ).
Name derivation: Lat., Pyrum , pear; Lat., forma, shape.
Comparison: Ovipostional scar morphology, size, and configuration allows for differentiation of several Paleoovoidus species previously described from the Phanerozoic ( Table 1). Paleoovoidus rectus Vasilenko emend. Sarzetti et al., 2009 features morphologically diverse scars arranged lengthwise in two chains along the midrib or in up to four subparallel ones between the veins. P. bifurcatus Sarzetti et al., 2009 differs in having smaller, elongate to lens-shaped lesions configured in pairs along both sides of a primary vein, forming double rows and sometimes a V-shaped arrangement, with arms of the V parallel to secondary veins. P. arcuatus Vasilenko emend. Sarzetti et al., 2009 and P. pyriformis ichnosp. nov. share scars of closely comparable morphology; the former, however, is distinct in having much smaller scars variably arranged in straight or arched rows with characteristic parallel or zigzag pattern. Regularly arranged, elongate marks comprising an arched oviposition are indicative of P. flabellatus Vasilenko, 2008 . P. krassilovi Vasilenko & Karasev, 2020 is characterized by oval, variably-spaced scars arranged in two slightly sinuous chains positioned on the edge of abaxial side of a leaf of Phylladoderma arberi . Notably smaller, elliptical to oval scars arranged in four venationwise rows typifies P. venustus Na et al., 2014 described from abaxial side of a ginkgophyte leaf. P. suboppositus Gnaedinger et al., 2014 is distinct in having fewer scars of variable outline (circular, ovoid, elliptical) and much smaller size (0.1 mm long, 0.5 mm wide) aligned in two linear chains one along each side of the midrib; either flanking, obliquely attached to the latter, or occasionally a lesion may be located on the lateral veins. P. contactus Gnaedinger et al., 2014 differs in having elliptical or spindle-shaped scars often closely-spaced and may rarely overlap along their long axis, arranged in several chains (up to nine) midribwise but far from it. P. midribus Gnaedinger et al., 2014 is identified as having scars of variable morphology (lenticular, ovoid, elliptical, or pear-shaped) scattered along (seldom randomly so), or occasionally arranged in a single row near the midrib.
Variomorphonotatus ichnogen. nov.
urn:lsid:zoobank.org:pub:DAF819A0-0629-4D5C-ACDD-08106EE592C5
Type species: Variomorphonotatus sagittaeformis ichnogen. et ichnosp. nov.; designated herein.
Diagnosis: Morphologically diverse scars of various size, symmetrical or otherwise, arranged in a zigzag pattern, in each direction several lesions positioned in some ± parallel rows; scars confined in the space between parallel lateral veins.
Name derivation: Lat., varius, different; Lat., typus, shape; Lat., notatus, mark.
Remarks: Predominant arrowhead-shaped scars typifies Variomorphonotatus ichnogen. nov.; no taxa of comparable morphology has been encountered in the literature.
Variomorphonotatus sagittaeformis ichnosp. nov.
urn:lsid:zoobank.org:pub:DAF819A0-0629-4D5C-ACDD-08106EE592C5
Fig. 2 View Fig : 2a, b; Fig. 4 View Fig : 2b
Diagnosis: Scars of variable outline and dimensions including arrowhead- and wedge-shaped, the former sometimes assymetrical, 4.0–6.0 mm long, 0.8–1.1 mm wide, 0.6–11.0 mm apart; in a trajectory configuration, in each direction several lesions arranged in some ± parallel rows; scars positioned between each two adjacent, parallel lateral veins with one side always congruent with one of the constraining veins while the other generally diagonal to the another immediate one.
Holotype /Type locality: HS-4, DT264, Fig. 2 View Fig : 2a, Fig. 4 View Fig : 2b; Scars of remarkably diverse morphology including arrowhead-, wedge-shaped, and elongate outline, 4.0– 6.0 mm long, 0.8–1.1 mm wide, 0.6–11.0 mm apart, the triangular lesions sometimes assymetrical; configured in a zigzag pattern on adaxial side of the leaf, in each direction several marks arranged in some ± parallel rows; scars positioned between each two adjacent, parallel lateral veins with one side always congruent with one of the constraining veins while the other generally diagonal to the another immediate one; western Alborz Ranges, south of Rudbar , Shemshak Formation ( Lower Jurassic ).
Name derivation: Lat., Sagitta , arrow; Lat., forma, shape.
Comparison: Ichnotaxon indet. D of Gnaedinger et al., (2014, p. 16) though superficially similar to Variomorphonotatus sagittaeformis ichnogen. et ichnosp. nov. is characterized by the occurrence of one or several rhomboidal impressions regularly arranged parallel with the lateral veins and perpendicular to the rachis on both abaxial and adaxial sides of the host plant. Ichnotaxa indet. B and C of Gnaedinger et al., (2014, pp. 6 & 7) both feature larger, subcircular to elliptical marks with their main axes arranged either perpendicular to the veins in the former or almost along the seconday veins in the latter.
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