Fil:The primitive streak and notochordal canal in Chelonia (Plate III) BHL4780738.jpg

Størrelse på denne forhåndsvisningen: 672 × 599 piksler. Andre oppløsninger: 269 × 240 piksler | 538 × 480 piksler | 861 × 768 piksler | 1 148 × 1 024 piksler | 2 104 × 1 877 piksler.

Opprinnelig fil ‎(2 104 × 1 877 piksler, filstørrelse: 392 KB, MIME-type: image/jpeg)

Denne filen er fra Wikimedia Commons og kan brukes av andre prosjekter. Informasjonen fra filbeskrivelsessiden vises nedenfor.

Beskrivelse

PLATE III.
All figures are magnified 39 diameters, except Figures 12 and 12’, which are magnified 10 diameters.
Fig. 11. Chrysemys picta, dorsal view. The horns of the notochordal canal are directed posteriad. A slight pit is discernible at the anterior third of the shield.
Figure 11'. Ventral view of the same, showing narrow opening of the notochordal canal.
Fig. 12. Ventral view of an embryo of Chelydra serpentina.
Fig. 12'. Dorsal view of the same. The medullary folds are beginning to close. The notochordal opening or neurenteric canal is reduced to a small horseshoe-shaped opening near the posterior end of the embryo.
Fig. 13. Chelydra serpentina, dorsal view. The horns of the notochordal opening are bent far posteriad.

Fig. 13'. Ventral view of the same. The notochordal canal opens ventrally.

Dato

Kilde

https://www.biodiversitylibrary.org/pageimage/4780738 The primitive streak and notochordal canal in Chelonia / by Gertrude Crotty Davenport. Prepared under the direction of Edward Laurens Mark.

Opphavsperson

Davenport, Gertrude Anna Crotty

Page ID

4780738

Item ID

Title ID

Page numbers

Plate III

BHL Page URL

https://www.biodiversitylibrary.org/page/4780738

DOI

10.5962/bhl.title.5777

Page type

Illustration Foldout

Credit

NOT_IN_COPYRIGHT

This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

العربية ∙ বাংলা ∙ Deutsch ∙ English ∙ español ∙ français ∙ italiano ∙ 日本語 ∙ македонски ∙ Nederlands ∙ polski ∙ +/−

Lisensiering

This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:

Dette verket er offentlig eiendom i Norge, EU og land der den opphavsrettslige vernetiden etter opphavsmannens død er 70 år eller kortere. Merk at noen land har lengre vernetid.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Denne filen har blitt identifisert til å være fri for kjente restriksjoner under lov om opphavsrett, inkludert alle relaterte og nærstående rettigheter.

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

Filhistorikk

Klikk på et tidspunkt for å vise filen slik den var på det tidspunktet.

	Dato/klokkeslett	Miniatyrbilde	Dimensjoner	Bruker	Kommentar
nåværende	8. apr. 2024 kl. 21:48		2 104 × 1 877 (392 KB)	Rasbak
	19. nov. 2015 kl. 17:00		2 154 × 1 878 (141 KB)	Fæ	== {{int:filedesc}} == {{BHL \| source = http://www.biodiversitylibrary.org/pageimage/4780738 \| description = The primitive streak and notochordal canal in Chelonia / by Gertrude Crotty Davenport. Prepared under the direction of Edward Laurens Mark. \|...

Filbruk

Den følgende siden bruker denne filen:

Primitivfure