Wider Caribbean Sea Turtle Conservation Network (WIDECAST)

  • About
    • Vision & Approach
    • Founder
    • Contact Us
  • Network
    • Country Coordinators
    • Annual Meeting
  • Biology
    • Basic Biology
    • Pictorial Key
    • Taxonomic Key
      • Sea Turtle Hatchlings
    • Terminology
  • Management
    • Nesting Beach Atlas
    • Population Monitoring
    • Regional Tagging Centre
    • Threats and Solutions
    • Toolkits
  • Conservation
    • IUCN Red List
    • Threats and Solutions
      • Overview of Threats
      • Beach Driving
      • Beach Litter and Debris
      • Beach Restoration
      • Beach Sand Mining
      • Beach Stabilization
      • Beachfront Lighting
      • Personal Watercraft
      • Climate Change
      • Construction Setbacks
      • Direct Harvest
      • Fisheries Bycatch
      • Illness and Injury
      • International Trade
      • Loss of Coral Reefs
      • Coastal Vegetation
      • Marine Vegetation
      • Marine Debris
      • Beach Obstacles
    • NWA Leatherbacks
    • Caribbean Legislation
    • International Treaties
  • Medicine
  • Ecotourism
    • Why Ecotourism?
    • Must-See Sites!
    • Establishing a Program
    • Training and Resources
  • Library
    • WIDECAST Publications
    • National Recovery Plans
    • Educators
    • WATS
    • NOAA Archive
  • Support
    • Take Action
    • Donate
    • Shop
You are here: Home / Basic Biology of Caribbean Sea Turtles / Terminology

Terminology

The following pictures illustrate some of the external morphological structures used to identify sea turtle species. These structures can also be used to reference a specific point on the body – such as the exact location of an injury, scute anomaly, etc. Where a series of scutes or scales have the same name (e.g. “vertebral”, “marginal”) individual scutes or scales can be differentiated by numbering them from anterior (head) to posterior (tail) and by noting the right or left side of the body (e.g. “sixth right marginal scute”).

TERMINOLOGY CM head (diagnostic)

TERMINOLOGY EI head (diagnostic)

 

 

 

 

 

Anatomical features associated with the head of a sea turtle can help identify the specimen to species. For example, the number of prefrontal (pf) and/or postorbital (po) scales can be diagnostic. In these illustrations, notice that one pair of prefrontal scales is unique to the green turtle (Chelonia mydas), while the hawksbill (Eretmochelys imbricata) has two pairs. Adult leatherbacks (Dermochelys coriacea lack scales entirely.

TERMINOLOGY EI dorsal (diagnostic)

TERMINOLOGY EI ventral (diagnostic)

 

 

 

 

 

 

Anatomical features associated with the carapace (upper shell) or plastron (lower shell) of a sea turtle can also help you identify the specimen to species. In these illustrations, notice that vertebral scutes define the midline of the carapace, while costal (lateral) scutes are paired on either side. Whether or not the first costal scute makes contact with the nuchal scute is an important characteristic to note. Inframarginal scutes, sometimes called bridge scutes, span the distance between the marginal scutes and the plates that comprise the plastron (h, p, ab, f).

Click here for a helpful Glossary of terms.

Glossary of Terms

TERMINOLOGY XV Curso studies - (c) CICTMAR

TERMINOLOGY ee - BVI Karen w Robby (shells)

TERMINOLOGY hatchlings - all bw

TERMINOLOGY Curso XI Lab Session - (c) D Chacon Jun01

TERMINOLOGY Lk diagnostic dorsal - (c) Jaime Pena (GPZ)

TERMINOLOGY Lo juv ventral ETP 1993 - (c) Robert L Pitman

TERMINOLOGY skeleton Cc whole - (c) C Harms

Working together to realize a future where all inhabitants of the Wider Caribbean Region, human and sea turtle alike, can live together in balance.

  • Facebook
  • Instagram

Home  -   Contact Us  -   Site Map  -   © 2021 WIDECAST