''Serradraco'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro ...

pterodactyloid Pterodactyloidea (derived from the Greek words ''πτερόν'' (''pterón'', for usual ''ptéryx'') "wing", and ''δάκτυλος'' (''dáktylos'') "finger" meaning "winged finger", "wing-finger" or "finger-wing") is one of the two traditional ...

pterosaur Pterosaurs (; from Greek ''pteron'' and ''sauros'', meaning "wing lizard") is an extinct clade of flying reptiles in the order, Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 to ...

from the

Valanginian In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between 139.8 ± 3.0 Ma and 132.9 ± 2.0 Ma (million years ago). The Valanginian Stage succeeds the Berriasian Stage of the Lower Cretaceou ...

aged

Tunbridge Wells Sand Formation The Tunbridge Wells Sand Formation is a geological unit which forms part of the Wealden Group and the uppermost and youngest part of the unofficial Hastings Beds. These geological units make up the core of the geology of the Weald in the English c ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

. Named by Rigal ''et al.'' in 2018 with the description of a second specimen, it contains a single species, ''S. sagittirostris'', which was formerly considered a species of ''

Lonchodectes ''Lonchodectes'' (meaning "lance biter") was a genus of lonchodectid pterosaur from several formations dating to the Turonian (Late Cretaceous) of England, mostly in the area around Kent. The species belonging to it had been assigned to ''Orni ...

'', ''L. sagittirostris''. In 2020, Averianov suggested it did not belong in

Lonchodectidae Lonchodectidae or LonchodraconidaePêgas, R.V., Holgado, B., Leal, M.E.C., 2019. "''Targaryendraco wiedenrothi'' gen. nov. (Pterodactyloidea, Pteranodontoidea, Lanceodontia) and recognition of a new cosmopolitan lineage of Cretaceous toothed pter ...

. The second specimen, BEXHM 2015.18, consists of a small fragment of jaw with three teeth; six complete caudal vertebrae fused together and two fragmentary caudal vertebrae in articulation; a distal left ulna; a right proximal syncarpal; portions of a minimum of three phalanges and two indeterminate elements.

Discovery and naming

In 1874,

Richard Owen Sir Richard Owen (20 July 1804 – 18 December 1892) was an English biologist, comparative anatomist and paleontologist. Owen is generally considered to have been an outstanding naturalist with a remarkable gift for interpreting fossils. Owe ...

named a pair of lower jaws from the collection of

Samuel Husband Beckles Samuel Husbands Beckles (12 April 1814, in Barbados – 4 September 1890, in Hastings) was a Bajan/English 19th-century lawyer, turned dinosaur hunter, who collected remains in Sussex and the Isle of Wight. In 1854 he described bird-like trackw ...

, found at

St Leonards-on-Sea St Leonards-on-Sea (commonly known as St Leonards) is a town and seaside resort in the Borough of Hastings in East Sussex, England. It has been part of the borough since the late 19th century and lies to the west of central Hastings. The origina ...

Sussex Sussex (), from the Old English (), is a historic county in South East England that was formerly an independent medieval Anglo-Saxon kingdom. It is bounded to the west by Hampshire, north by Surrey, northeast by Kent, south by the English ...

, as a new species of ''

Pterodactylus ''Pterodactylus'' (from Greek () meaning 'winged finger') is an extinct genus of pterosaurs. It is thought to contain only a single species, ''Pterodactylus antiquus'', which was the first pterosaur to be named and identified as a flying rept ...

'': ''Pterodactylus sagittirostris''. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

means "arrowhead-snouted" in

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

, referring to the mandible profile in upper view. In 1888,

Edwin Tulley Newton Edwin Tulley Newton (4 May 1840 – 28 January 1930) was a British paleontologist. Newton originally worked at handicrafts, but was able to attend Thomas Henry Huxley's lectures and by 1865, was appointed as his assistant. In 1882, he becam ...

, conforming to the soon to be published pterosaur systematics by

Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. His father was Gerard Wolfe Lydekker, ...

, renamed the species into ''

Ornithocheirus ''Ornithocheirus'' (from Ancient Greek "ὄρνις", meaning ''bird'', and "χεῖρ", meaning ''hand'') is a pterosaur genus known from fragmentary fossil remains uncovered from sediments in the UK and possibly Morocco. Several species have ...

sagittirostris''. In July 1891, the British Museum (Natural History), the present

Natural History Museum A natural history museum or museum of natural history is a scientific institution with natural history collections that include current and historical records of animals, plants, fungi, ecosystems, geology, paleontology, climatology, and more. ...

, bought the piece from the heirs of Beckles. In 1914,

Reginald Walter Hooley Reginald Walter Hooley (5 September 1865 – 5 May 1923) was a businessman and amateur paleontologist, collecting on the Isle of Wight. He is probably best remembered for describing the dinosaur ''Iguanodon atherfieldensis'', now ''Mantellisaurus ...

renamed the species into ''

sagittirostris''. In 1919 however,

Gustav von Arthaber Gustav, Gustaf or Gustave may refer to: *Gustav (name), a male given name of Old Swedish origin Art, entertainment, and media *Primeval (film), ''Primeval'' (film), a 2007 American horror film *Gustav (film series), ''Gustav'' (film series), a Hu ...

again considered it an ''Ornithocheirus sagittirostris'', which was confirmed by

Peter Wellnhofer Peter Wellnhofer (born Munich, 1936) is a German paleontologist at the Bayerische Staatssammlung fur Paläontologie in Munich. He is best known for his work on the various fossil specimens of ''Archaeopteryx'' or "Urvogel", the first known bird. W ...

in 1978. In 2001,

David Unwin David (; , "beloved one") (traditional spelling), , ''Dāwūd''; grc-koi, Δαυΐδ, Dauíd; la, Davidus, David; gez , ዳዊት, ''Dawit''; xcl, Դաւիթ, ''Dawitʿ''; cu, Давíдъ, ''Davidŭ''; possibly meaning "beloved one". w ...

returned to the ''Lonchodectes sagittirostris'' designation. In 2013, Taissa Rodrigues and Alexander Wilhelm Armin Kellner concluded that ''Lonchodectes sagittirostris'' lacked any distinguishing traits and was therefore a ''

nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a s ...

''. In 2017, Stanislas Rigal, David Martill and Steven Sweetman disagreed with this and named a separate genus ''Serradraco'', resulting in the

new combination ''Combinatio nova'', abbreviated ''comb. nov.'' (sometimes ''n. comb.''), is Latin for "new combination". It is used in taxonomic biology literature when a new name is introduced based on a pre-existing name. The term should not to be confused wi ...

''Serradraco sagittirostris''. The

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

of the genus is the original ''Pterodactylus sagittirostris''. The generic name is a combination of the Latin ''serra'', "saw" and ''draco'', "dragon", referring to the saw-like upper profile of the lower jaws.

Classification

In 2020, a

phylogenetic analysis In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

conducted by paleontologist Jordan Bestwick and colleagues recovered ''Serradraco'' as the sister taxon of ''

Lonchodraco ''Lonchodraco'' is a genus of lonchodraconid Pterodactyloidea, pterodactyloid pterosaur from the Late Cretaceous of southern England. The genus includes species that were previously assigned to other genera. Discovery and naming In 1846, Jame ...

''. Their cladogram is presented below.

References

{{Portal bar, Paleontology, Cretaceous, United Kingdom Early Cretaceous pterosaurs of Europe Fossil taxa described in 2018 Pteranodontoids