https://hollidaylab.com/research/https://hollidaylab.com/wp-content/uploads/2018/09/circle-o-gators.jpgcircle o gatorshttps://hollidaylab.com/wp-content/uploads/2018/09/vr-pectoralis.jpgVR Pectoralishttps://hollidaylab.com/wp-content/uploads/2010/06/nerve-draft-1.jpgnerve draft 1https://hollidaylab.com/wp-content/uploads/2010/06/sitelogo2.jpgHollidayLab database logoSkink (Eumeces) 3D rendering and symphyseal morphology2020-11-21T14:59:55+00:00weekly0.6https://hollidaylab.com/2020/01/28/dinosaurs-cavemen-open-house-2020/https://hollidaylab.com/wp-content/uploads/2020/01/2020-sms-polly-giant-snakes-1.jpg2020 SMS Polly Giant Snakeshttps://hollidaylab.com/wp-content/uploads/2020/01/2020-sms-polly-ecomorphology-1.jpg2020 SMS Polly EcoMorphologyhttps://hollidaylab.com/wp-content/uploads/2020/01/sms-titanoboa.jpgSMS Titanoboahttps://hollidaylab.com/wp-content/uploads/2020/01/2020-sms-polly-ecomorphology.jpg2020 SMS Polly EcoMorphologyhttps://hollidaylab.com/wp-content/uploads/2020/01/2020-sms-polly-giant-snakes.jpg2020 SMS Polly Giant Snakeshttps://hollidaylab.com/wp-content/uploads/2020/01/sms-logo-370x294-1.pngSMS-logo-370x294https://hollidaylab.com/wp-content/uploads/2020/01/polly.jpgPollyhttps://hollidaylab.com/wp-content/uploads/2020/01/picture12.pngPicture122020-01-30T04:52:29+00:00monthlyhttps://hollidaylab.com/people/https://hollidaylab.com/wp-content/uploads/2018/09/corrine.jpgCorrinehttps://hollidaylab.com/wp-content/uploads/2018/09/spiro1.jpgspiro1https://hollidaylab.com/wp-content/uploads/2018/09/bitmap-in-graphic1.jpgEmily Lessner, Kennett Square, PA. B.S. Virginia Tech.A number of extant animals (e.g., birds, crocodylians) utilize trigeminal-innervated sensory systems to interact with their environments. I am interested in understanding the innervation, anatomy, and evolution of these systems (especially in pseudosuchian archosaurs) in order to apply them to extinct animals. I utilize dissection and imaging techniques (e.g., whole-mount staining, histology, CT scanning) to look inside the skulls of both extant and extinct animals to better understand and reconstruct the behaviors and interactions of these animals.https://hollidaylab.com/wp-content/uploads/2018/09/al809-13.jpgAL809-13Interests: A number of extant animals (e.g., birds, crocodylians) utilize trigeminal-innervated sensory systems to interact with their environments. I am interested in understanding the innervation, anatomy, and evolution of these systems (especially in pseudosuchian archosaurs) in order to apply them to extinct animals. I utilize dissection and imaging techniques (e.g., whole-mount staining, histology, CT scanning) to look inside the skulls of both extant and extinct animals to better understand and reconstruct the behaviors and interactions of these animals.https://hollidaylab.com/wp-content/uploads/2018/09/emily-lessner.jpgEmily LessnerEmily Lessner, PhD Student is from Kennett Square, PA. She received her B.S from Virginia Tech. https://hollidaylab.com/wp-content/uploads/2018/09/kala-frazier.jpgKala Frazierhttps://hollidaylab.com/wp-content/uploads/2018/09/connor-verhulst.jpgConnor Verhulsthttps://hollidaylab.com/wp-content/uploads/2018/09/alec-wilken.jpgAlec Wilkenhttps://hollidaylab.com/wp-content/uploads/2018/09/alec-wilken-3.jpgAlec wilken 3https://hollidaylab.com/wp-content/uploads/2018/09/alec-wilken-2.jpgAlec Wilken 22018-09-12T16:31:07+00:00weekly0.6https://hollidaylab.com/news/https://hollidaylab.com/wp-content/uploads/2013/06/inside_dinosaurs-reu-2016.jpgInside_Dinosaurs REU 20162018-09-12T15:12:30+00:00weekly0.6https://hollidaylab.com/2018/09/10/2018-midwest-regional-sicb-meeting/https://hollidaylab.com/wp-content/uploads/2018/09/sicb-mizzou-logo_draft_tony.jpgSICB MIZZOU LOGO_Draft_tony2018-09-10T20:18:08+00:00monthlyhttps://hollidaylab.com/dinosaurs-cavemen-science-expo/https://hollidaylab.com/wp-content/uploads/2018/03/2018-dinosaurscavemen-flyer.jpg2018 Dinosaurs&Cavemen Flyerhttps://hollidaylab.com/wp-content/uploads/2018/03/2018-dinosaurscavemen-science-expo-flyer.jpg2018 Dinosaurs&Cavemen Science Expo Flyerhttps://hollidaylab.com/wp-content/uploads/2017/02/2017-dinosaurscavemen-science-expo-flyer.jpg2017-dinosaurscavemen-science-expo-flyerhttps://hollidaylab.com/wp-content/uploads/2017/02/dcse-2016-spatesosuchus.jpgdcse-2016-spatesosuchushttps://hollidaylab.com/wp-content/uploads/2017/02/dcse-2016-prokuosul.jpgdcse-2016-prokuosulhttps://hollidaylab.com/wp-content/uploads/2017/02/dcse-2016-colleenopithicus.jpgdcse-2016-colleenopithicushttps://hollidaylab.com/wp-content/uploads/2017/02/dcse-2016-caitlynsaurus.jpgdcse-2016-caitlynsaurushttps://hollidaylab.com/wp-content/uploads/2017/02/mu-dcse-2016.jpgmu-dcse-20162018-03-05T17:27:14+00:00weekly0.6https://hollidaylab.com/2016/03/02/nsf-summer-research-experience-for-stem-teachers-in-comparative-biomechanics-paleontology-and-evolution/https://hollidaylab.com/wp-content/uploads/2016/03/inside_dinosaurs_ret-2016.jpgInside_Dinosaurs_RET 20162016-03-02T19:01:40+00:00monthlyhttps://hollidaylab.com/2016/01/15/nsf-summer-research-experience-in-comparative-biomechanics-paleontology-and-evolution/2016-01-15T19:31:41+00:00monthlyhttps://hollidaylab.com/homesliderimage3/https://hollidaylab.com/wp-content/uploads/2013/06/far-side.jpgFar side2015-10-24T19:18:57+00:00weekly0.6https://hollidaylab.com/2015/03/02/postdoctoral-fellow-position-open-evolution-of-dinosaur-jaw-musculature-and-the-origins-of-avian-cranial-kinesis/2015-03-02T16:37:03+00:00monthlyhttps://hollidaylab.com/2014/12/23/looking-for-a-postdoc-fall-2015/2014-12-23T15:59:59+00:00monthlyhttps://hollidaylab.com/2014/12/22/were-back/https://hollidaylab.com/wp-content/uploads/2014/12/sicb2_01.jpgsicb2_01https://hollidaylab.com/wp-content/uploads/2014/12/1620531_10204546420236421_3261568282529368030_n.jpg1620531_10204546420236421_3261568282529368030_n2023-02-15T04:01:43+00:00monthlyhttps://hollidaylab.com/2013/07/05/icvm-10/https://hollidaylab.com/wp-content/uploads/2013/07/icvm.jpgICVM2013-07-06T01:17:13+00:00monthlyhttps://hollidaylab.com/2013/03/24/dinosaurs-and-cavemen-is-a-success/https://hollidaylab.com/wp-content/uploads/2013/03/missouri-20130309-00040.jpgMissouri-20130309-00040https://hollidaylab.com/wp-content/uploads/2013/03/missouri-20130309-00057.jpgMissouri-20130309-00057https://hollidaylab.com/wp-content/uploads/2013/03/img_0452.jpghttps://hollidaylab.com/wp-content/uploads/2013/03/dsc_0014.jpgDSC_0014https://hollidaylab.com/wp-content/uploads/2013/03/dsc_0006.jpgDSC_0006https://hollidaylab.com/wp-content/uploads/2013/03/dsc_0001.jpgDSC_0001https://hollidaylab.com/wp-content/uploads/2013/03/missouri-20130309-00049.jpgMissouri-20130309-00049https://hollidaylab.com/wp-content/uploads/2013/03/img_20130309_125150.jpgIMG_20130309_125150https://hollidaylab.com/wp-content/uploads/2013/03/dsc_0038.jpgDSC_0038https://hollidaylab.com/wp-content/uploads/2013/03/dsc_0027.jpgDSC_00272021-08-16T15:46:56+00:00monthlyhttps://hollidaylab.com/2013/05/30/its-a-veggie-raptor-lex-veggi-raptor/2013-05-31T05:19:38+00:00monthlyhttps://hollidaylab.com/2013/04/04/towards-finding-invisible-whiskers-in-fossil-crocs/https://hollidaylab.com/wp-content/uploads/2013/04/fig-2.jpgCroc brains and gangliaCroc brains and gangliahttps://hollidaylab.com/wp-content/uploads/2013/04/fig-3.jpgAlligator trigeminal nerveAlligator trigeminal nerve2014-03-26T12:28:48+00:00monthlyhttps://hollidaylab.com/2013/02/26/dinosaurs-cavemen-public-event/https://hollidaylab.com/wp-content/uploads/2013/02/bitmap-in-graphic1.jpgEarth's Wild Ride: Dinosaurs & CavemenSaturday March 9th. Rock Bridge High School Planetarium. 1-5pm2013-02-26T22:59:59+00:00monthlyhttps://hollidaylab.com/2013/02/15/a-brief-history-of-archosauriform-symphyses/https://hollidaylab.com/wp-content/uploads/2013/02/protosuchus.jpgProtosuchusGorgeous MicroCT data of Protosuchus (MCZ 6727) and its sexy chin. https://hollidaylab.com/wp-content/uploads/2013/02/chin-tree.jpgChin TreeClass-based evolution of the mandibular symphysis of archosauriforms. Holliday and Nesbitt, 2013. 2014-07-23T11:41:08+00:00monthlyhttps://hollidaylab.com/2012/10/22/transactions-of-the-royal-sounds-of-svp/2012-10-25T03:29:46+00:00monthlyhttps://hollidaylab.com/2012/10/19/calls-of-the-wild/2012-10-19T20:21:36+00:00monthlyhttps://hollidaylab.com/2012/10/17/reaching-out-for-science/2012-10-17T15:23:40+00:00monthlyhttps://hollidaylab.com/2012/09/18/ruminations-on-sauropsid-cheeks/https://hollidaylab.com/wp-content/uploads/2012/09/flamingo-cheek.jpgFlamingo cheekFlamingo extended rictus err dinosaur cheek2018-10-07T00:49:34+00:00monthlyhttps://hollidaylab.com/2012/07/11/travels-to-rockefeller-state-refuge/https://hollidaylab.com/wp-content/uploads/2012/07/holding-gators.jpgHolding GatorsHolding Gatorshttps://hollidaylab.com/wp-content/uploads/2012/07/dsc_0045-copy.jpgEarly morning Sun, Rockefeller Jan 31Early morning Sun, Rockefeller Jan 31https://hollidaylab.com/wp-content/uploads/2012/07/dsc_0063-copy.jpgReturn from Rockefeller Feb 1, 2011The morning after picking up gators, after a 15hr drive through winter weather, Feb 1, 2011.https://hollidaylab.com/wp-content/uploads/2012/07/dsc_0046.jpgOutdoor facilities at RockefellerOutdoor facilities at Rockefellerhttps://hollidaylab.com/wp-content/uploads/2012/07/dsc_0018.jpgBeach West of Cameron, LABeach West of Cameron, LAhttps://hollidaylab.com/wp-content/uploads/2012/07/dsc_00091.jpgDSC_0009https://hollidaylab.com/wp-content/uploads/2012/07/dsc_0061.jpgDSC_0061https://hollidaylab.com/wp-content/uploads/2012/07/dsc_00581.jpgRuth showing Julie and Cortaiga a local gator nest. Momma is just under the reeds at the bottom of photo. Ruth showing Julie and Cortaiga a local gator nest. Momma is just under the reeds at the bottom of photo.https://hollidaylab.com/wp-content/uploads/2012/07/dsc_0055.jpgDSC_0055https://hollidaylab.com/wp-content/uploads/2012/07/dsc_00531.jpgJulie, Dave, and Cortaiga at RockefellerJulie, Dave, and Cortaiga at Rockefeller2012-07-11T05:23:58+00:00monthlyhttps://hollidaylab.com/2012/07/02/cartilage-fusion-in-gator-chins/https://hollidaylab.com/wp-content/uploads/2012/07/alligator-meckels-cartilage.jpgAlligator Meckel's cartilageCleared and Double-stained alligator embryo showing the incipient double fusion and spatulate process of Meckel's cartilage at the symphysis. https://hollidaylab.com/wp-content/uploads/2012/07/allgiator-chin.jpgAllgiator chinCross-section through suture and Meckel's cartilage and CT-based 3D model of mandibular symphysis with bone, and without showing Meckel's cartilage and sutural ligament. https://hollidaylab.com/wp-content/uploads/2012/07/gator-tif.pngAlligator Meckel's Cartilage.tifMandibular joints and Meckel's cartilage in Alligator2015-03-07T14:17:50+00:00monthlyhttps://hollidaylab.com/2011/12/15/svp-2011-report-education-outreach-poster/https://hollidaylab.com/wp-content/uploads/2011/12/grand-canyon-plane.jpgGrand Canyon from the planeGrand Canyon from the plane 2011-12-15T17:35:32+00:00monthlyhttps://hollidaylab.com/2011/09/18/alligator-sesamoid-anatomy/https://hollidaylab.com/wp-content/uploads/2011/09/mri-ct.jpgMRI-CTSimilar coronal sections through same Alligator specimen using MicroMRI (Left) and Iodine-enhance MicroCT (Right)https://hollidaylab.com/wp-content/uploads/2011/09/iodine-gator-model.jpgiodine-enhanced alligator muscle modelIodine-enhanced alligator muscle modelhttps://hollidaylab.com/wp-content/uploads/2011/09/fig-3.jpgFig 3https://hollidaylab.com/wp-content/uploads/2011/09/fig-1.jpgPLoS One Alligator Sesamoid Fig 1Iodine-enhanced microCT and 3D model of jaw muscles of Alligatorhttps://hollidaylab.com/wp-content/uploads/2011/09/fig-7.jpgCartilago transiliens histology2011-09-18T17:24:42+00:00monthlyhttps://hollidaylab.com/2011/09/01/lung-anatomy-high-school-workshop/https://hollidaylab.com/wp-content/uploads/2011/08/dsc_7546.jpgPlanking Anatomy styleThe Visible Plankhttps://hollidaylab.com/wp-content/uploads/2011/08/100_5170.jpg100_5170https://hollidaylab.com/wp-content/uploads/2011/08/100_5160.jpg100_5160https://hollidaylab.com/wp-content/uploads/2011/08/100_5142.jpg100_5142https://hollidaylab.com/wp-content/uploads/2011/08/100_5136.jpg100_5136https://hollidaylab.com/wp-content/uploads/2011/08/100_5135.jpg100_5135https://hollidaylab.com/wp-content/uploads/2011/08/100_5132.jpg100_5132https://hollidaylab.com/wp-content/uploads/2011/08/100_5128.jpg100_5128https://hollidaylab.com/wp-content/uploads/2011/08/100_5101.jpg100_5101https://hollidaylab.com/wp-content/uploads/2011/08/100_5097.jpg100_50972024-10-29T05:48:16+00:00monthlyhttps://hollidaylab.com/2011/06/13/crocopocalypse/https://hollidaylab.com/wp-content/uploads/2011/06/alligator-smyphysis.jpgAlligator Smyphysis2011-06-18T15:51:50+00:00monthlyhttps://hollidaylab.com/2011/04/18/the-internet-is-for-alligators/https://hollidaylab.com/wp-content/uploads/2011/04/3dgator.jpg3DGatorhttps://hollidaylab.com/wp-content/uploads/2011/04/3d-gator-halfbanner2.jpg3D Gator halfbannerThe 3D Alligator project is hosted by the Holliday Lab and Witmer Lab. There you will find numerous 3D interactive modules illustrating the head anatomy of the American alligatorhttps://hollidaylab.com/wp-content/uploads/2011/04/rjs_3dalligator.jpgRJS_3DAlligatorRebecca Skiljan and the 3D Alligator poster at Mizzou Life Sciences Research Dayhttps://hollidaylab.com/wp-content/uploads/2011/04/laterosphenoid-lateral.jpgLaterosphenoid-lateralSample image from 3D Alligatorhttps://hollidaylab.com/wp-content/uploads/2011/04/3dalligatorbanner.jpg3DAlligatorBannerThe 3D Alligator page is cohosted by the HollidayLab and WitmerLab. At each site you will find a host of 3D interactive models of adult and juvenile Alligator heads.https://hollidaylab.com/wp-content/uploads/2011/04/3d-alligator-banner.jpg3D Alligator 3D Alligator 2013-05-23T14:25:30+00:00monthlyhttps://hollidaylab.com/2011/04/06/inside-alligators-anatomy-and-public-outreach/https://hollidaylab.com/wp-content/uploads/2011/04/100_3596.jpgCortaiga and gatorCortaiga and gatorhttps://hollidaylab.com/wp-content/uploads/2011/04/100_3593.jpgBecci working the tableBecci working the tablehttps://hollidaylab.com/wp-content/uploads/2011/04/100_3583.jpgVet students working through specimens-note the Ipad useVet students working through specimens-note the Ipad usehttps://hollidaylab.com/wp-content/uploads/2011/04/100_3530.jpgGood timesGood timeshttps://hollidaylab.com/wp-content/uploads/2011/04/100_3520.jpgHeartHearthttps://hollidaylab.com/wp-content/uploads/2011/04/100_3517.jpgMore good timesMore good timeshttps://hollidaylab.com/wp-content/uploads/2011/04/100_3490.jpgWe all get to get dirtyWe all get to get dirtyhttps://hollidaylab.com/wp-content/uploads/2011/04/100_3488.jpgLeverage comes in handyLeverage comes in handyhttps://hollidaylab.com/wp-content/uploads/2011/04/100_3448.jpgAlligatorThe specimens we used included wild-caught and farm-raised, 4-5yr old alligators from Louisiana. after the day's events, specimens were harvested for particular parts, or put back in the freezer for later use. https://hollidaylab.com/wp-content/uploads/2011/04/100_3512.jpgPlaying paleontologist-estimating skull size from a braincasePlaying paleontologist-estimating skull size from a braincase2011-04-07T17:03:56+00:00monthlyhttps://hollidaylab.com/2011/03/10/visit-to-texas-memorial-museum/https://hollidaylab.com/wp-content/uploads/2011/03/dsc_0055.jpgTrilophosaurusTrilophosaurushttps://hollidaylab.com/wp-content/uploads/2011/03/dsc_0221.jpgBasement of the TMMBasement of the TMMhttps://hollidaylab.com/wp-content/uploads/2011/03/dsc_0004.jpgXradia microCT scanner at University of TexasXradia microCT scanner at University of Texas2011-03-14T20:46:41+00:00monthlyhttps://hollidaylab.com/2011/01/11/in-memorium-wolff/https://hollidaylab.com/wp-content/uploads/2011/01/img042.jpgimg042Wolff Obi 20102011-01-12T04:44:57+00:00monthlyhttps://hollidaylab.com/2010/12/17/toxic-rejection/https://hollidaylab.com/wp-content/uploads/2010/12/failgatorpaper.jpgOLYMPUS DIGITAL CAMERA2011-01-12T19:26:23+00:00monthlyhttps://hollidaylab.com/2010/12/10/jurassic-park-gave-us-vegisaurus-madagascar-gave-us-vegisuchus/https://hollidaylab.com/wp-content/uploads/2010/12/croc.jpgcrocFrom Wired.com: The most widespread of all living fossils, crocodiles have barely changed in the 230 million years since dinosaurs roamed the Earth. https://hollidaylab.com/wp-content/uploads/2010/12/fig-7_2009crocepts.jpgFig 7_2009CrocEPTshttps://hollidaylab.com/wp-content/uploads/2010/12/simosuchus-2004.jpgSimosuchus 20042010-12-20T01:44:46+00:00monthlyhttps://hollidaylab.com/2010/11/30/my-day/https://hollidaylab.com/wp-content/uploads/2010/11/nerves.jpgnerveshttps://hollidaylab.com/wp-content/uploads/2010/11/gatorfail1.jpggatorfailhttps://hollidaylab.com/wp-content/uploads/2010/11/gatorfail.jpggatorfailhttps://hollidaylab.com/wp-content/uploads/2010/11/alligator-lagoon.jpgalligator-lagoon2011-01-08T07:37:24+00:00monthlyhttps://hollidaylab.com/2010/11/19/braincase-and-skull-viz-of-youngina/https://hollidaylab.com/wp-content/uploads/2010/11/holliday.jpghollidayhttps://hollidaylab.com/wp-content/uploads/2010/11/youngina.jpgYoungina CT and segmented viz2010-12-01T03:59:30+00:00monthlyhttps://hollidaylab.com/2010/10/21/current-trends-in-publishing-3d-anatomy/https://hollidaylab.com/wp-content/uploads/2010/10/lugol-gator1.jpgLugol Gatorhttps://hollidaylab.com/wp-content/uploads/2010/10/lugol-gator.jpgLugol Gatorhttps://hollidaylab.com/wp-content/uploads/2010/10/eddy.jpgEdmontosaurus Rybczinski et al. PE 2008https://hollidaylab.com/wp-content/uploads/2010/10/varanus.jpgVaranus2010-12-21T19:26:05+00:00monthlyhttps://hollidaylab.com/2010/10/05/making-connections-svp-2010-symposium-and-more/https://hollidaylab.com/wp-content/uploads/2010/10/svp-logo.jpgSVP Logo2010-10-05T20:20:38+00:00monthlyhttps://hollidaylab.com/2010/09/30/dinosaur-articular-cartilage/https://hollidaylab.com/wp-content/uploads/2010/09/hollidayetal_plos_brachiosaurus_skeleton2.jpgHollidayetal_PLOS_Brachiosaurus_skeletonBrachiosaurus showing height differences applying Alligator-like CCF. Modified with permission from MJ Wedel.https://hollidaylab.com/wp-content/uploads/2010/09/alligator_cartcaps.jpgAlligator_CartcapsHumerus from 6ft long alligator with cartilage caps removed.https://hollidaylab.com/wp-content/uploads/2010/09/hollidayetal_plos_brachiosaurus_knee21.jpgHollidayetal_Plos_Brachiosaurus_knee2https://hollidaylab.com/wp-content/uploads/2010/09/hollidayetal_plos_brachiosaurus_skeleton1.jpgHollidayetal_PLOS_Brachiosaurus_skeletonhttps://hollidaylab.com/wp-content/uploads/2010/09/hollidayetal_plos_brachiosaurus_knee2.jpgHollidayetal_Plos_Brachiosaurus_knee2Brachiosaurus kneehttps://hollidaylab.com/wp-content/uploads/2010/09/hollidayetal_plos_brachiosaurus_skeleton.jpgHollidayetal_PLOS_Brachiosaurus_skeleton2019-04-27T21:01:30+00:00monthlyhttps://hollidaylab.com/2010/07/22/lizard-symphysis-histology-paper-out-in-anatomical-record/https://hollidaylab.com/wp-content/uploads/2010/07/symphysis-fail-cover.jpgHolliday_Symphysis_fail_cover2010-09-29T15:25:36+00:00monthlyhttps://hollidaylab.com/2010/06/03/summer-2010/https://hollidaylab.com/wp-content/uploads/2010/06/wpe4.jpgAlligatorhttps://hollidaylab.com/wp-content/uploads/2010/06/cover.jpgcoverhttps://hollidaylab.com/wp-content/uploads/2010/06/varanus_joints1.jpgvaranus_joints2010-06-04T04:12:20+00:00monthlyhttps://hollidaylab.comdaily1.02024-10-29T05:48:16+00:00