page_title: List of the prehistoric life of Delaware
section_title: Selected Mesozoic taxa of Delaware
hierarchical_section_title: List of the prehistoric life of Delaware / Mesozoic / Selected Mesozoic taxa of Delaware
caption_attribution_description: English: Apsopelix sp. - fossil fish from the Cretaceous of Kansas, USA. (public display, Sternberg Museum of Natural History, Hays, Kansas, USA) From museum signage: "Streamlined fishes with fins distributed along the length of their bodies were well designed for continuous swimming. Apsopelix and other fishes probably roved over wide areas hunting for food." Classification: Animalia, Chordata, Vertebrata, Osteichthyes, Actinopterygii, Crossognathiformes, Crossognathidae Stratigraphy: unspecified Upper Cretaceous unit (probably the Smoky Hill Chalk of the Niobrara Formation) Locality: unrecorded/undisclosed site in Logan County, western Kansas, USA
context_page_description: This list of the prehistoric life of Delaware contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Delaware.
context_section_description: †Acteon
  †Aenona – tentative report
  †Agerostrea
  †Ampullina
  †Anaklinoceras
  †Anomia
  †Anomoeodus
   †Apsopelix
  †Apsopelix anglicus
  †Arca
  Architectonica – or unidentified comparable form
  Arrhoges
  Astarte – tentative report
  †Avellana
  †Baculites
  †Baculites haresi
  †Baculites ovatus
  Barbatia
   †Belemnitella
  †Belemnitella americana
  Bernaya
  †Bonnerichthys
  †Bulla
  Cadulus
  Caestocorbula
  †Caestocorbula crassiplica
  †Calliomphalus
  †Calliomphalus americanus – tentative report
  †Calliomphalus nudus
  Capulus
  †Caveola
  Cerithium
  Clavagella
   †Clidastes – or unidentified comparable form
  Cliona
  †Coelosaurus
  †Coelosaurus antiquus
  Corbula
  †Crenella
  †Crenella serica
  †Cretolamna
  †Cretolamna appendiculata
  Cucullaea
  Cuspidaria
  †Cuspidaria grandis
  Cylichna
  †Cymella
  †Dentalium
  †Didymoceras
  †Didymoceras binodosum
  †Didymoceras cheyennense
  †Didymoceras platycostatum
  †Didymoceras stevensoni
   †Dryptosaurus
  †Ecphora – tentative report
  Emarginula
  †Enchodus
  †Euspira
  †Eutrephoceras
  †Exiteloceras
  †Exogyra
  †Exogyra cancellata
  †Exogyra costata
  †Exogyra ponderosa
  Gastrochaena
  †Gegania
  Ginglymostoma
   †Globidens
  †Globidens alabamensis
  Glossus
  Glycymeris
  †Halisaurus
  †Halisaurus platyspondylus
  †Hamulus
  Haustator – or unidentified comparable form
  †Hoploscaphites
  †Hybodus
  †Inoceramus
  †Ischyodus
  †Ischyodus bifurcatus
  †Ischyrhiza
  †Ischyrhiza avonicola – or unidentified comparable form
  †Ischyrhiza mira
   †Jeletzkytes
  Lepisosteus – or unidentified comparable form
  Lima
  †Linearis
  †Lingula – tentative report
  †Lissodus
  Lithophaga
  Lopha
  †Lopha falcata
  †Lucina
  Martesia
  †Mathilda
  †Menuites
  †Morea – or unidentified comparable form
  †Neithea
  †Neithea quinquecostata
  Nucula
  †Nucula percrassa
   Odontaspis
  †Ornithomimus
  Ostrea
  †Pachydiscus
  †Pachymelania
  Panopea
  †Paralbula
  † Paranomia
  Patella
  †Pecten
  Pholadomya
  †Pholadomya occidentalis
  Pholas – tentative report
  †Pinna
  †Placenticeras
  Plicatula
  †Pseudocorax
   †Pteranodon – tentative report
  †Pteria
  †Pterotrigonia
  †Pterotrigonia eufaulensis
  †Ptychotrygon
  Pycnodonte
  †Pycnodonte mutabilis
  Rhinobatos
  †Rhombodus
  Ringicula
  †Sargana
  †Scapanorhynchus
  †Scapanorhynchus texanus
  †Scaphites
  †Scaphites hippocrepis
  †Sclerorhynchus
  Serpula
  Spondylus
   Squalicorax
  †Squalicorax falcatus
  †Squalicorax kaupi
  †Squalicorax pristodontus
  Squatina
  †Stephanodus
  Tellina
  †Tenea
  †Toxochelys
  Trachycardium
  †Trachycardium eufaulensis
  †Trigonia
  Trionyx
  Turritella
  †Turritella tippana
  †Turritella trilira
  †Turritella vertebroides
   †Tylosaurus
  Tympanotonos – or unidentified comparable form
  Xenophora
  †Xiphactinus
caption: Fossilized skeleton of the Late Cretaceous bony fish Apsopelix
exif: {"Image ImageWidth": "4000", "Image ImageLength": "3000", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Make": "Canon", "Image Model": "Canon PowerShot D10", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Elements 13.0 (Macintosh)", "Image DateTime": "2017:04:03 21:35:36", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "304", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1226", "Thumbnail JPEGInterchangeFormatLength": "2628", "EXIF ExposureTime": "1/13", "EXIF FNumber": "9/2", "EXIF ISOSpeedRatings": "320", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2012:06:13 09:40:49", "EXIF DateTimeDigitized": "2012:06:13 09:40:49", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "3", "EXIF ShutterSpeedValue": "59/16", "EXIF ApertureValue": "139/32", "EXIF ExposureBiasValue": "-1/3", "EXIF MaxApertureValue": "139/32", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "14303/1000", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3348", "EXIF ExifImageLength": "979", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "4000", "Interoperability RelatedImageLength": "3000", "EXIF InteroperabilityOffset": "1076", "EXIF FocalPlaneXResolution": "4000000/243", "EXIF FocalPlaneYResolution": "1500000/91", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Standard"}