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- Santanachelys abstract "Santanachelys gaffneyi is the earliest known sea turtle. It is the only species in the genus Santanachelys, which itself is a member of the extinct family Protostegidae. The species was first described from a 20-centimeter long fossil specimen unearthed in 1998 in Eastern Brazil. Due to the rock layer from which it was excavated, it was determined that the specimen was from the Early Cretaceous period some 110 million years old.While the specimen showed many characteristics of modern sea turtles, it differed from the typical sea turtle body plan in several ways. One glaring difference is that Santanachelys had distinguishable digits at the tip of its forearms. Instead of the fully fused, hydrodynamic paddles that modern sea turtles possess, the early sea turtle's digits were distinct and movable similar to that of non-marine turtles. Like later sea turtles though, Santanachelys had large salt glands situated near its eyes which allowed it to drink saltwater without dehydration.Evolutionarily, the morphology of Santanachelys is typical of what is expected of an early sea turtle. The front appendages not being fully evolved into flippers is a sign of this. The presence of large foramen in the turtle's skull where salt glands were is an interesting evolutionary point. It is pointed out that this suggests that the evolutionary return to oceanic waters of the sea turtle line evolved before the finalization and streamlining of the line's paddles.Taxonomically, Santanachelys has been placed in the family Protostegidae along with many other extinct sea turtles. It is the earliest member of the family to date, and the earliest known member of the sea turtle superfamily, Chelonioidea. Cladistically, it is the sister taxon to the rest of the later protostegids, including Protostega and Notochelone. As a member of its family, its closest living relative belongs to the family Dermochelyidae, the leatherback turtle.Its genus, Santanachelys was named for the Santana Formation, the locality where the fossil was found and chelys, Greek for "turtle". The species name, S. gaffneyi was named in honor of Eugene S. Gaffney, a paleontologist who specialized in turtle phylogeny.".
- Santanachelys thumbnail Santanachelys.jpg?width=300.
- Santanachelys wikiPageID "13079615".
- Santanachelys wikiPageRevisionID "606076955".
- Santanachelys binomial "†Santanachelys gaffneyi".
- Santanachelys binomialAuthority "Hirayama, 1998".
- Santanachelys fossilRange "Early Cretaceous,".
- Santanachelys genus "Santanachelys".
- Santanachelys genusAuthority "Hirayama, 1998".
- Santanachelys hasPhotoCollection Santanachelys.
- Santanachelys imageWidth "250".
- Santanachelys species "†S. gaffneyi".
- Santanachelys subject Category:Cretaceous_turtles.
- Santanachelys subject Category:Prehistoric_reptiles_of_South_America.
- Santanachelys subject Category:Protostegidae.
- Santanachelys type Artifact100021939.
- Santanachelys type Clothing103051540.
- Santanachelys type Commodity103076708.
- Santanachelys type ConsumerGoods103093574.
- Santanachelys type Covering103122748.
- Santanachelys type CretaceousTurtles.
- Santanachelys type Garment103419014.
- Santanachelys type Jersey103595614.
- Santanachelys type Object100002684.
- Santanachelys type PhysicalEntity100001930.
- Santanachelys type Shirt104197391.
- Santanachelys type Sweater104370048.
- Santanachelys type Turtleneck104502197.
- Santanachelys type Whole100003553.
- Santanachelys type Reptile.
- Santanachelys comment "Santanachelys gaffneyi is the earliest known sea turtle. It is the only species in the genus Santanachelys, which itself is a member of the extinct family Protostegidae. The species was first described from a 20-centimeter long fossil specimen unearthed in 1998 in Eastern Brazil.".
- Santanachelys label "Santanachelys gaffneyi".
- Santanachelys label "Santanachelys gaffneyi".
- Santanachelys label "Santanachelys gaffneyi".
- Santanachelys label "Santanachelys".
- Santanachelys label "Santanachelys".
- Santanachelys label "サンタナケリス".
- Santanachelys sameAs Santanachelys_gaffneyi.
- Santanachelys sameAs Santanachelys.
- Santanachelys sameAs サンタナケリス.
- Santanachelys sameAs Santanachelys_gaffneyi.
- Santanachelys sameAs Santanachelys_gaffneyi.
- Santanachelys sameAs m.02z5pns.
- Santanachelys sameAs Q293185.
- Santanachelys sameAs Q293185.
- Santanachelys sameAs Santanachelys.
- Santanachelys wasDerivedFrom Santanachelys?oldid=606076955.
- Santanachelys depiction Santanachelys.jpg.
- Santanachelys isPrimaryTopicOf Santanachelys.
