Bulletins of American paleontology . Height of fragment mm, width 20 mm. Ex-terior and interior views of part of a connected ambulacrumand interambulacrum, X 10. Specimen L600al. PRI27662. Spine recovered from specimen L600a. Length , diameter above neck mm, X 11-13. SpecimenL600C, PRI 27663. Height 10 mm, breadth of arch of half-epiphysis, X 3. All of the above specimensare from the Playa Grande Formation (Catia Member). 358 Bulletin 252 Explanation of Plate 16 Figure Page 1-7. Echinometra lucunter (Linnaeus) 302 1-4. Specimen A606a. PRI 27664. Length 45 m
Bulletins of American paleontology . Height of fragment mm, width 20 mm. Ex-terior and interior views of part of a connected ambulacrumand interambulacrum, X 10. Specimen L600al. PRI27662. Spine recovered from specimen L600a. Length , diameter above neck mm, X 11-13. SpecimenL600C, PRI 27663. Height 10 mm, breadth of arch of half-epiphysis, X 3. All of the above specimensare from the Playa Grande Formation (Catia Member). 358 Bulletin 252 Explanation of Plate 16 Figure Page 1-7. Echinometra lucunter (Linnaeus) 302 1-4. Specimen A606a. PRI 27664. Length 45 mm, width 39mm, height 21 mm. 1-3. Abactinal, ambital, and actinal as-pects, X L4. 4. View showing tubercles and arrangement ofpore-pairs, X 5,6. Specimen A606b. PRI 27665. Length45 mm, width 34 mm, height 23 mm. Actinal and ambitalaspects, X 7. Specimen A606d. PRI 27666. Length 18mm, diameter above neck mm. Primary spine, broken attip, X 3. All of the above specimens are Recent. Bull. Amer. Paleont., Vol. 56 Plate 16. Bull. Amer. Paleont., Vol. 56 Plate 17 •^^iR^J
Size: 1297px × 1926px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidbulletinsofa, bookyear1895
